[ADD] migrate database_cleanup

8 years ago · ece76e72a3
27 changed files with 769 additions and 982 deletions
--- a/database_cleanup/README.rst
+++ b/database_cleanup/README.rst
@ -1,15 +1,78 @@
 .. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
    :alt: License: AGPL-3
 ================
 atabase cleanup
 ================
 Clean your OpenERP database from remnants of modules, models, columns and
 tables left by uninstalled modules (prior to 7.0) or a homebrew database
 upgrade to a new major version of OpenERP.
 Caution! This module is potentially harmful and can *easily* destroy the
 integrity of your data. Do not use if you are not entirely comfortable
 with the technical details of the OpenERP data model of *all* the modules
 that have ever been installed on your database, and do not purge any module,
 model, column or table if you do not know exactly what you are doing.
 Usage
 =====
 After installation of this module, go to the Settings menu -> Technical ->
 Database cleanup. Go through the modules, models, columns and tables
 entries under this menu (in that order) and find out if there is orphaned data
 in your database. You can either delete entries by line, or sweep all entries
 in one big step (if you are *really* confident).
 Caution! This module is potentially harmful and can *easily* destroy the
 integrity of your data. Do not use if you are not entirely comfortable
 with the technical details of the OpenERP data model of *all* the modules
 that have ever been installed on your database, and do not purge any module,
 model, column or table if you do not know exactly what you are doing.
 .. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
    :alt: Try me on Runbot
    :target: https://runbot.odoo-community.org/runbot/149/9.0
 For further information, please visit:
 * https://www.odoo.com/forum/help-1
 Known issues / Roadmap
 ======================
 * ...
 Bug Tracker
 ===========
 Bugs are tracked on `GitHub Issues <https://github.com/OCA/database_cleanup/issues>`_.
 In case of trouble, please check there if your issue has already been reported.
 If you spotted it first, help us smashing it by providing a detailed and welcomed feedback
 `here <https://github.com/OCA/database_cleanup/issues/new?body=module:%20database_cleanup%0Aversion:%209.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
 Credits
 =======
 Images
 ------
 * Odoo Community Association: `Icon <https://github.com/OCA/maintainer-tools/blob/master/template/module/static/description/icon.svg>`_.
 Contributors
 ------------
 * Stefan Rijnhart <stefan@opener.amsterdam>
 * Holger Brunn <hbrunn@therp.nl>
 Do not contact contributors directly about help with questions or problems concerning this addon, but use the `community mailing list <mailto:community@mail.odoo.com>`_ or the `appropriate specialized mailinglist <https://odoo-community.org/groups>`_ for help, and the bug tracker linked in `Bug Tracker`_ above for technical issues.
 Maintainer
 ----------
 .. image:: https://odoo-community.org/logo.png
   :alt: Odoo Community Association
   :target: https://odoo-community.org
 This module is maintained by the OCA.
 OCA, or the Odoo Community Association, is a nonprofit organization whose
 mission is to support the collaborative development of Odoo features and
 promote its widespread use.
 To contribute to this module, please visit https://odoo-community.org.
--- a/database_cleanup/init.py
+++ b/database_cleanup/init.py
@ -1 +1,4 @@
 from . import model
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from . import models
--- a/database_cleanup/openerp.py
+++ b/database_cleanup/openerp.py
@ -1,39 +1,22 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 {
    'name': 'Database cleanup',
    'version': '8.0.0.1.0',
    'version': '9.0.1.0.0',
    'author': "Therp BV,Odoo Community Association (OCA)",
    'depends': ['base'],
    'license': 'AGPL-3',
    'category': 'Tools',
    'data': [
        'view/purge_menus.xml',
        'view/purge_modules.xml',
        'view/purge_models.xml',
        'view/purge_columns.xml',
        'view/purge_tables.xml',
        'view/purge_data.xml',
        'view/menu.xml',
        "views/purge_wizard.xml",
        'views/purge_menus.xml',
        'views/purge_modules.xml',
        'views/purge_models.xml',
        'views/purge_columns.xml',
        'views/purge_tables.xml',
        'views/purge_data.xml',
        'views/menu.xml',
    ],
    'installable': False,
    'installable': True,
 }
--- a/database_cleanup/model/purge_columns.py
+++ b/database_cleanup/model/purge_columns.py
@ -1,155 +0,0 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 from openerp.osv import orm, fields
 from openerp.tools.translate import _
 class CleanupPurgeLineColumn(orm.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.column'
    _columns = {
        'model_id': fields.many2one(
            'ir.model', 'Model',
            required=True, ondelete='CASCADE'),
        'wizard_id': fields.many2one(
            'cleanup.purge.wizard.column', 'Purge Wizard', readonly=True),
        }
    def purge(self, cr, uid, ids, context=None):
        """
        Unlink columns upon manual confirmation.
        """
        for line in self.browse(cr, uid, ids, context=context):
            if line.purged:
                continue
            model_pool = self.pool[line.model_id.model]
            # Check whether the column actually still exists.
            # Inheritance such as stock.picking.in from stock.picking
            # can lead to double attempts at removal
            cr.execute(
                'SELECT count(attname) FROM pg_attribute '
                'WHERE attrelid = '
                '( SELECT oid FROM pg_class WHERE relname = %s ) '
                'AND attname = %s',
                (model_pool._table, line.name))
            if not cr.fetchone()[0]:
                continue
            self.logger.info(
                'Dropping column %s from table %s',
                line.name, model_pool._table)
            cr.execute(
                """
                ALTER TABLE "%s" DROP COLUMN "%s"
                """ % (model_pool._table, line.name))
            line.write({'purged': True})
            cr.commit()
        return True
 class CleanupPurgeWizardColumn(orm.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.column'
    # List of known columns in use without corresponding fields
    # Format: {table: [fields]}
    blacklist = {
        'wkf_instance': ['uid'],  # lp:1277899
        }
    def default_get(self, cr, uid, fields, context=None):
        res = super(CleanupPurgeWizardColumn, self).default_get(
            cr, uid, fields, context=context)
        if 'name' in fields:
            res['name'] = _('Purge columns')
        return res
    def get_orphaned_columns(self, cr, uid, model_pools, context=None):
        """
        From openobject-server/openerp/osv/orm.py
        Iterate on the database columns to identify columns
        of fields which have been removed
        """
        columns = list(set([
            column for model_pool in model_pools
            for column in model_pool._columns
            if not (isinstance(model_pool._columns[column],
                               fields.function) and
                    not model_pool._columns[column].store)
            ]))
        columns += orm.MAGIC_COLUMNS
        columns += self.blacklist.get(model_pools[0]._table, [])
        cr.execute("SELECT a.attname"
                   "  FROM pg_class c, pg_attribute a"
                   " WHERE c.relname=%s"
                   "   AND c.oid=a.attrelid"
                   "   AND a.attisdropped=%s"
                   "   AND pg_catalog.format_type(a.atttypid, a.atttypmod)"
                   "        NOT IN ('cid', 'tid', 'oid', 'xid')"
                   "   AND a.attname NOT IN %s",
                   (model_pools[0]._table, False, tuple(columns))),
        return [column[0] for column in cr.fetchall()]
    def find(self, cr, uid, context=None):
        """
        Search for columns that are not in the corresponding model.
        Group models by table to prevent false positives for columns
        that are only in some of the models sharing the same table.
        Example of this is 'sale_id' not being a field of stock.picking.in
        """
        res = []
        model_pool = self.pool['ir.model']
        model_ids = model_pool.search(cr, uid, [], context=context)
        # mapping of tables to tuples (model id, [pool1, pool2, ...])
        table2model = {}
        for model in model_pool.browse(cr, uid, model_ids, context=context):
            model_pool = self.pool.get(model.model)
            if not model_pool or not model_pool._auto:
                continue
            table2model.setdefault(
                model_pool._table, (model.id, []))[1].append(model_pool)
        for table, model_spec in table2model.iteritems():
            for column in self.get_orphaned_columns(
                    cr, uid, model_spec[1], context=context):
                res.append((0, 0, {
                            'name': column,
                            'model_id': model_spec[0]}))
        if not res:
            raise orm.except_orm(
                _('Nothing to do'),
                _('No orphaned columns found'))
        return res
    _columns = {
        'purge_line_ids': fields.one2many(
            'cleanup.purge.line.column',
            'wizard_id', 'Columns to purge'),
        }
--- a/database_cleanup/model/purge_data.py
+++ b/database_cleanup/model/purge_data.py
@ -1,106 +0,0 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 from openerp.osv import orm, fields
 from openerp.tools.translate import _
 class CleanupPurgeLineData(orm.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.data'
    _columns = {
        'data_id': fields.many2one(
            'ir.model.data', 'Data entry',
            ondelete='SET NULL'),
        'wizard_id': fields.many2one(
            'cleanup.purge.wizard.data', 'Purge Wizard', readonly=True),
        }
    def purge(self, cr, uid, ids, context=None):
        """
        Unlink data entries upon manual confirmation.
        """
        data_ids = []
        for line in self.browse(cr, uid, ids, context=context):
            if line.purged or not line.data_id:
                continue
            data_ids.append(line.data_id.id)
            self.logger.info('Purging data entry: %s', line.name)
        self.pool['ir.model.data'].unlink(cr, uid, data_ids, context=context)
        return self.write(cr, uid, ids, {'purged': True}, context=context)
 class CleanupPurgeWizardData(orm.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.data'
    def default_get(self, cr, uid, fields, context=None):
        res = super(CleanupPurgeWizardData, self).default_get(
            cr, uid, fields, context=context)
        if 'name' in fields:
            res['name'] = _('Purge data')
        return res
    def find(self, cr, uid, context=None):
        """
        Collect all rows from ir_model_data that refer
        to a nonexisting model, or to a nonexisting
        row in the model's table.
        """
        res = []
        data_pool = self.pool['ir.model.data']
        data_ids = []
        unknown_models = []
        cr.execute("""SELECT DISTINCT(model) FROM ir_model_data""")
        for (model,) in cr.fetchall():
            if not model:
                continue
            if not self.pool.get(model):
                unknown_models.append(model)
                continue
            cr.execute(
                """
                SELECT id FROM ir_model_data
                WHERE model = %%s
                AND res_id IS NOT NULL
                AND NOT EXISTS (
                    SELECT id FROM %s WHERE id=ir_model_data.res_id)
                """ % self.pool[model]._table, (model,))
            data_ids += [data_row[0] for data_row in cr.fetchall()]
        data_ids += data_pool.search(
            cr, uid, [('model', 'in', unknown_models)], context=context)
        for data in data_pool.browse(cr, uid, data_ids, context=context):
            res.append((0, 0, {
                        'data_id': data.id,
                        'name': "%s.%s, object of type %s" % (
                            data.module, data.name, data.model)}))
        if not res:
            raise orm.except_orm(
                _('Nothing to do'),
                _('No orphaned data entries found'))
        return res
    _columns = {
        'purge_line_ids': fields.one2many(
            'cleanup.purge.line.data',
            'wizard_id', 'Data to purge'),
        }
--- a/database_cleanup/model/purge_menus.py
+++ b/database_cleanup/model/purge_menus.py
@ -1,81 +0,0 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2015 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 from openerp.osv import orm, fields
 from openerp.tools.translate import _
 class CleanupPurgeLineMenu(orm.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.menu'
    _columns = {
        'wizard_id': fields.many2one(
            'cleanup.purge.wizard.menu', 'Purge Wizard', readonly=True),
        'menu_id': fields.many2one('ir.ui.menu', 'Menu entry'),
    }
    def purge(self, cr, uid, ids, context=None):
        self.pool['ir.ui.menu'].unlink(
            cr, uid,
            [this.menu_id.id for this in self.browse(cr, uid, ids,
                                                     context=context)],
            context=context)
        return self.write(cr, uid, ids, {'purged': True}, context=context)
 class CleanupPurgeWizardMenu(orm.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.menu'
    def default_get(self, cr, uid, fields, context=None):
        res = super(CleanupPurgeWizardMenu, self).default_get(
            cr, uid, fields, context=context)
        if 'name' in fields:
            res['name'] = _('Purge menus')
        return res
    def find(self, cr, uid, context=None):
        """
        Search for models that cannot be instantiated.
        """
        res = []
        for menu in self.pool['ir.ui.menu'].browse(
                cr, uid, self.pool['ir.ui.menu'].search(
                    cr, uid, [], context=dict(
                        context or {}, active_test=False))):
            if not menu.action or menu.action.type != 'ir.actions.act_window':
                continue
            if not self.pool.get(menu.action.res_model):
                res.append((0, 0, {
                    'name': menu.complete_name,
                    'menu_id': menu.id,
                }))
        if not res:
            raise orm.except_orm(
                _('Nothing to do'),
                _('No dangling menu entries found'))
        return res
    _columns = {
        'purge_line_ids': fields.one2many(
            'cleanup.purge.line.menu',
            'wizard_id', 'Menus to purge'),
    }
--- a/database_cleanup/model/purge_models.py
+++ b/database_cleanup/model/purge_models.py
@ -1,155 +0,0 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 from openerp.osv import orm, fields
 from openerp.tools.translate import _
 from openerp.addons.base.ir.ir_model import MODULE_UNINSTALL_FLAG
 class IrModel(orm.Model):
    _inherit = 'ir.model'
    def _drop_table(self, cr, uid, ids, context=None):
        # Allow to skip this step during model unlink
        # The super method crashes if the model cannot be instantiated
        if context and context.get('no_drop_table'):
            return True
        return super(IrModel, self)._drop_table(cr, uid, ids, context=context)
    def _inherited_models(self, cr, uid, ids, field_name, arg, context=None):
        """this function crashes for undefined models"""
        result = dict((i, []) for i in ids)
        existing_model_ids = [
            this.id for this in self.browse(cr, uid, ids, context=context)
            if self.pool.get(this.model)
        ]
        super_result = super(IrModel, self)._inherited_models(
            cr, uid, existing_model_ids, field_name, arg, context=context)
        result.update(super_result)
        return result
    def _register_hook(self, cr):
        # patch the function field instead of overwriting it
        if self._columns['inherited_model_ids']._fnct !=\
                self._inherited_models.__func__:
            self._columns['inherited_model_ids']._fnct =\
                self._inherited_models.__func__
        return super(IrModel, self)._register_hook(cr)
 class CleanupPurgeLineModel(orm.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.model'
    _columns = {
        'wizard_id': fields.many2one(
            'cleanup.purge.wizard.model', 'Purge Wizard', readonly=True),
        }
    def purge(self, cr, uid, ids, context=None):
        """
        Unlink models upon manual confirmation.
        """
        model_pool = self.pool['ir.model']
        attachment_pool = self.pool['ir.attachment']
        constraint_pool = self.pool['ir.model.constraint']
        fields_pool = self.pool['ir.model.fields']
        relation_pool = self.pool['ir.model.relation']
        local_context = (context or {}).copy()
        local_context.update({
            MODULE_UNINSTALL_FLAG: True,
            'no_drop_table': True,
            })
        for line in self.browse(cr, uid, ids, context=context):
            cr.execute(
                "SELECT id, model from ir_model WHERE model = %s",
                (line.name,))
            row = cr.fetchone()
            if row:
                self.logger.info('Purging model %s', row[1])
                attachment_ids = attachment_pool.search(
                    cr, uid, [('res_model', '=', line.name)], context=context)
                if attachment_ids:
                    cr.execute(
                        "UPDATE ir_attachment SET res_model = FALSE "
                        "WHERE id in %s",
                        (tuple(attachment_ids), ))
                constraint_ids = constraint_pool.search(
                    cr, uid, [('model', '=', line.name)], context=context)
                if constraint_ids:
                    constraint_pool.unlink(
                        cr, uid, constraint_ids, context=context)
                relation_ids = fields_pool.search(
                    cr, uid, [('relation', '=', row[1])], context=context)
                for relation in relation_ids:
                    try:
                        # Fails if the model on the target side
                        # cannot be instantiated
                        fields_pool.unlink(cr, uid, [relation],
                                           context=local_context)
                    except KeyError:
                        pass
                    except AttributeError:
                        pass
                relation_ids = relation_pool.search(
                    cr, uid, [('model', '=', line.name)], context=context)
                for relation in relation_ids:
                    relation_pool.unlink(cr, uid, [relation],
                                         context=local_context)
                model_pool.unlink(cr, uid, [row[0]], context=local_context)
                line.write({'purged': True})
                cr.commit()
        return True
 class CleanupPurgeWizardModel(orm.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.model'
    def default_get(self, cr, uid, fields, context=None):
        res = super(CleanupPurgeWizardModel, self).default_get(
            cr, uid, fields, context=context)
        if 'name' in fields:
            res['name'] = _('Purge models')
        return res
    def find(self, cr, uid, context=None):
        """
        Search for models that cannot be instantiated.
        """
        res = []
        cr.execute("SELECT model from ir_model")
        for (model,) in cr.fetchall():
            if not self.pool.get(model):
                res.append((0, 0, {'name': model}))
        if not res:
            raise orm.except_orm(
                _('Nothing to do'),
                _('No orphaned models found'))
        return res
    _columns = {
        'purge_line_ids': fields.one2many(
            'cleanup.purge.line.model',
            'wizard_id', 'Models to purge'),
        }
--- a/database_cleanup/model/purge_modules.py
+++ b/database_cleanup/model/purge_modules.py
@ -1,129 +0,0 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 from openerp import pooler
 from openerp.osv import orm, fields
 from openerp.modules.module import get_module_path
 from openerp.tools.translate import _
 from openerp.addons.base.ir.ir_model import MODULE_UNINSTALL_FLAG
 class IrModelConstraint(orm.Model):
    _inherit = 'ir.model.constraint'
    def _module_data_uninstall(self, cr, uid, ids, context=None):
        """this function crashes for constraints on undefined models"""
        for this in self.browse(cr, uid, ids, context=context):
            if not self.pool.get(this.model.model):
                ids.remove(this.id)
                this.unlink()
        return super(IrModelConstraint, self)._module_data_uninstall(
            cr, uid, ids, context=context)
 class IrModelData(orm.Model):
    _inherit = 'ir.model.data'
    def _module_data_uninstall(self, cr, uid, modules_to_remove, context=None):
        """this function crashes for xmlids on undefined models or fields
        referring to undefined models"""
        if context is None:
            context = {}
        ids = self.search(cr, uid, [('module', 'in', modules_to_remove)])
        for this in self.browse(cr, uid, ids, context=context):
            if this.model == 'ir.model.fields':
                ctx = context.copy()
                ctx[MODULE_UNINSTALL_FLAG] = True
                field = self.pool[this.model].browse(
                    cr, uid, this.res_id, context=ctx)
                if not self.pool.get(field.model):
                    this.unlink()
                    continue
            if not self.pool.get(this.model):
                this.unlink()
        return super(IrModelData, self)._module_data_uninstall(
            cr, uid, modules_to_remove, context=context)
 class CleanupPurgeLineModule(orm.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.module'
    _columns = {
        'wizard_id': fields.many2one(
            'cleanup.purge.wizard.module', 'Purge Wizard', readonly=True),
        }
    def purge(self, cr, uid, ids, context=None):
        """
        Uninstall modules upon manual confirmation, then reload
        the database.
        """
        module_pool = self.pool['ir.module.module']
        lines = self.browse(cr, uid, ids, context=context)
        module_names = [line.name for line in lines if not line.purged]
        module_ids = module_pool.search(
            cr, uid, [('name', 'in', module_names)], context=context)
        if not module_ids:
            return True
        self.logger.info('Purging modules %s', ', '.join(module_names))
        module_pool.write(
            cr, uid, module_ids, {'state': 'to remove'}, context=context)
        cr.commit()
        _db, _pool = pooler.restart_pool(cr.dbname, update_module=True)
        module_pool.unlink(cr, uid, module_ids, context=context)
        return self.write(cr, uid, ids, {'purged': True}, context=context)
 class CleanupPurgeWizardModule(orm.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.module'
    def default_get(self, cr, uid, fields, context=None):
        res = super(CleanupPurgeWizardModule, self).default_get(
            cr, uid, fields, context=context)
        if 'name' in fields:
            res['name'] = _('Purge modules')
        return res
    def find(self, cr, uid, context=None):
        module_pool = self.pool['ir.module.module']
        module_ids = module_pool.search(cr, uid, [], context=context)
        res = []
        for module in module_pool.browse(cr, uid, module_ids, context=context):
            if get_module_path(module.name):
                continue
            if module.state == 'uninstalled':
                module_pool.unlink(cr, uid, module.id, context=context)
                continue
            res.append((0, 0, {'name': module.name}))
        if not res:
            raise orm.except_orm(
                _('Nothing to do'),
                _('No modules found to purge'))
        return res
    _columns = {
        'purge_line_ids': fields.one2many(
            'cleanup.purge.line.module',
            'wizard_id', 'Modules to purge'),
        }
--- a/database_cleanup/model/purge_wizard.py
+++ b/database_cleanup/model/purge_wizard.py
@ -1,87 +0,0 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 import logging
 from openerp.osv import orm, fields
 class CleanupPurgeLine(orm.AbstractModel):
    """ Abstract base class for the purge wizard lines """
    _name = 'cleanup.purge.line'
    _order = 'name'
    _columns = {
        'name': fields.char('Name', size=256, readonly=True),
        'purged': fields.boolean('Purged', readonly=True),
        }
    logger = logging.getLogger('openerp.addons.database_cleanup')
    def purge(self, cr, uid, ids, context=None):
        raise NotImplementedError
 class PurgeWizard(orm.AbstractModel):
    """ Abstract base class for the purge wizards """
    _name = 'cleanup.purge.wizard'
    def default_get(self, cr, uid, fields, context=None):
        res = super(PurgeWizard, self).default_get(
            cr, uid, fields, context=context)
        if 'purge_line_ids' in fields:
            res['purge_line_ids'] = self.find(cr, uid, context=None)
        return res
    def find(self, cr, uid, ids, context=None):
        raise NotImplementedError
    def purge_all(self, cr, uid, ids, context=None):
        line_pool = self.pool[self._columns['purge_line_ids']._obj]
        for wizard in self.browse(cr, uid, ids, context=context):
            line_pool.purge(
                cr, uid, [line.id for line in wizard.purge_line_ids],
                context=context)
        return True
    def get_wizard_action(self, cr, uid, context=None):
        wizard_id = self.create(cr, uid, {}, context=context)
        return {
            'type': 'ir.actions.act_window',
            'views': [(False, 'form')],
            'res_model': self._name,
            'res_id': wizard_id,
            'flags': {
                'action_buttons': False,
                'sidebar': False,
            },
        }
    def select_lines(self, cr, uid, ids, context=None):
        return {
            'type': 'ir.actions.act_window',
            'name': 'Select lines to purge',
            'views': [(False, 'tree'), (False, 'form')],
            'res_model': self._columns['purge_line_ids']._obj,
            'domain': [('wizard_id', 'in', ids)],
        }
    _columns = {
        'name': fields.char('Name', size=64, readonly=True),
        }
--- a/database_cleanup/models/init.py
+++ b/database_cleanup/models/init.py
--- a/database_cleanup/models/purge_columns.py
+++ b/database_cleanup/models/purge_columns.py
@ -0,0 +1,123 @@
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from openerp import _, api, fields, models
 from openerp.exceptions import UserError
 from openerp.osv import fields as legacy_fields
 class CleanupPurgeLineColumn(models.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.column'
    model_id = fields.Many2one('ir.model', 'Model', required=True,
                               ondelete='CASCADE')
    wizard_id = fields.Many2one(
        'cleanup.purge.wizard.column', 'Purge Wizard', readonly=True)
    @api.multi
    def purge(self):
        """
        Unlink columns upon manual confirmation.
        """
        for line in self:
            if line.purged:
                continue
            model_pool = self.env[line.model_id.model]
            # Check whether the column actually still exists.
            # Inheritance such as stock.picking.in from stock.picking
            # can lead to double attempts at removal
            self.env.cr.execute(
                'SELECT count(attname) FROM pg_attribute '
                'WHERE attrelid = '
                '( SELECT oid FROM pg_class WHERE relname = %s ) '
                'AND attname = %s',
                (model_pool._table, line.name))
            if not self.env.cr.fetchone()[0]:
                continue
            self.logger.info(
                'Dropping column %s from table %s',
                line.name, model_pool._table)
            self.env.cr.execute(
                """
                ALTER TABLE "%s" DROP COLUMN "%s"
                """ % (model_pool._table, line.name))
            line.write({'purged': True})
            self.env.cr.commit()
        return True
 class CleanupPurgeWizardColumn(models.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.column'
    _description = 'Purge columns'
    # List of known columns in use without corresponding fields
    # Format: {table: [fields]}
    blacklist = {
        'wkf_instance': ['uid'],  # lp:1277899
    }
    @api.model
    def get_orphaned_columns(self, model_pools):
        """
        From openobject-server/openerp/osv/orm.py
        Iterate on the database columns to identify columns
        of fields which have been removed
        """
        columns = list(set([
            column
            for model_pool in model_pools
            for column in model_pool._columns
            if not (isinstance(model_pool._columns[column],
                               legacy_fields.function) and
                    not model_pool._columns[column].store)
        ]))
        columns += models.MAGIC_COLUMNS
        columns += self.blacklist.get(model_pools[0]._table, [])
        self.env.cr.execute(
            "SELECT a.attname FROM pg_class c, pg_attribute a "
            "WHERE c.relname=%s AND c.oid=a.attrelid AND a.attisdropped=False "
            "AND pg_catalog.format_type(a.atttypid, a.atttypmod) "
            "NOT IN ('cid', 'tid', 'oid', 'xid') "
            "AND a.attname NOT IN %s",
            (model_pools[0]._table, tuple(columns)))
        return [column for column, in self.env.cr.fetchall()]
    @api.model
    def find(self):
        """
        Search for columns that are not in the corresponding model.
        Group models by table to prevent false positives for columns
        that are only in some of the models sharing the same table.
        Example of this is 'sale_id' not being a field of stock.picking.in
        """
        res = []
        # mapping of tables to tuples (model id, [pool1, pool2, ...])
        table2model = {}
        for model in self.env['ir.model'].search([]):
            if model.model not in self.env:
                continue
            model_pool = self.env[model.model]
            if not model_pool._auto:
                continue
            table2model.setdefault(
                model_pool._table, (model.id, [])
            )[1].append(model_pool)
        for table, model_spec in table2model.iteritems():
            for column in self.get_orphaned_columns(model_spec[1]):
                res.append((0, 0, {
                            'name': column,
                            'model_id': model_spec[0]}))
        if not res:
            raise UserError(_('No orphaned columns found'))
        return res
    purge_line_ids = fields.One2many(
        'cleanup.purge.line.column', 'wizard_id', 'Columns to purge')
--- a/database_cleanup/models/purge_data.py
+++ b/database_cleanup/models/purge_data.py
@ -0,0 +1,71 @@
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from openerp import _, api, fields, models
 from openerp.exceptions import UserError
 class CleanupPurgeLineData(models.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.data'
    data_id = fields.Many2one('ir.model.data', 'Data entry')
    wizard_id = fields.Many2one(
        'cleanup.purge.wizard.data', 'Purge Wizard', readonly=True)
    @api.multi
    def purge(self):
        """
        Unlink data entries upon manual confirmation.
        """
        to_unlink = self.filtered(lambda x: not x.purged and x.data_id)
        self.logger.info('Purging data entries: %s', to_unlink.mapped('name'))
        to_unlink.mapped('data_id').unlink()
        return self.write({'purged': True})
 class CleanupPurgeWizardData(models.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.data'
    _description = 'Purge data'
    @api.model
    def find(self):
        """
        Collect all rows from ir_model_data that refer
        to a nonexisting model, or to a nonexisting
        row in the model's table.
        """
        res = []
        data_ids = []
        unknown_models = []
        self.env.cr.execute("""SELECT DISTINCT(model) FROM ir_model_data""")
        for model, in self.env.cr.fetchall():
            if not model:
                continue
            if model not in self.env:
                unknown_models.append(model)
                continue
            self.env.cr.execute(
                """
                SELECT id FROM ir_model_data
                WHERE model = %%s
                AND res_id IS NOT NULL
                AND NOT EXISTS (
                    SELECT id FROM %s WHERE id=ir_model_data.res_id)
                """ % self.env[model]._table, (model,))
            data_ids.extend(data_row for data_row, in self.env.cr.fetchall())
        data_ids += self.env['ir.model.data'].search([
            ('model', 'in', unknown_models),
        ]).ids
        for data in self.env['ir.model.data'].browse(data_ids):
            res.append((0, 0, {
                        'data_id': data.id,
                        'name': "%s.%s, object of type %s" % (
                            data.module, data.name, data.model)}))
        if not res:
            raise UserError(_('No orphaned data entries found'))
        return res
    purge_line_ids = fields.One2many(
        'cleanup.purge.line.data', 'wizard_id', 'Data to purge')
--- a/database_cleanup/models/purge_menus.py
+++ b/database_cleanup/models/purge_menus.py
@ -0,0 +1,48 @@
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from openerp import _, api, fields, models
 from openerp.exceptions import UserError
 class CleanupPurgeLineMenu(models.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.menu'
    wizard_id = fields.Many2one(
        'cleanup.purge.wizard.menu', 'Purge Wizard', readonly=True)
    menu_id = fields.Many2one('ir.ui.menu', 'Menu entry')
    @api.multi
    def purge(self):
        self.mapped('menu_id').unlink()
        return self.write({'purged': True})
 class CleanupPurgeWizardMenu(models.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.menu'
    _description = 'Purge menus'
    @api.model
    def find(self):
        """
        Search for models that cannot be instantiated.
        """
        res = []
        for menu in self.env['ir.ui.menu'].with_context(active_test=False)\
                .search([('action', '!=', False)]):
            if menu.action.type != 'ir.actions.act_window':
                continue
            if menu.action.res_model not in self.env or\
               menu.action.src_model not in self.env:
                res.append((0, 0, {
                    'name': menu.complete_name,
                    'menu_id': menu.id,
                }))
        if not res:
            raise UserError(_('No dangling menu entries found'))
        return res
    purge_line_ids = fields.One2many(
        'cleanup.purge.line.menu', 'wizard_id', 'Menus to purge')
--- a/database_cleanup/models/purge_models.py
+++ b/database_cleanup/models/purge_models.py
@ -0,0 +1,120 @@
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from openerp import _, api, models, fields
 from openerp.exceptions import UserError
 from openerp.addons.base.ir.ir_model import MODULE_UNINSTALL_FLAG
 class IrModel(models.Model):
    _inherit = 'ir.model'
    @api.multi
    def _drop_table(self):
        # Allow to skip this step during model unlink
        # The super method crashes if the model cannot be instantiated
        if self.env.context.get('no_drop_table'):
            return True
        return super(IrModel, self)._drop_table()
    @api.multi
    def _inherited_models(self, field_name, arg):
        """this function crashes for undefined models"""
        result = dict((i, []) for i in self.ids)
        existing_model_ids = [
            this.id for this in self if this.model in self.env
        ]
        super_result = super(IrModel, self.browse(existing_model_ids))\
            ._inherited_models(field_name, arg)
        result.update(super_result)
        return result
    def _register_hook(self, cr):
        # patch the function field instead of overwriting it
        if self._columns['inherited_model_ids']._fnct !=\
                self._inherited_models.__func__:
            self._columns['inherited_model_ids']._fnct =\
                self._inherited_models.__func__
        return super(IrModel, self)._register_hook(cr)
 class CleanupPurgeLineModel(models.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.model'
    _description = 'Purge models'
    wizard_id = fields.Many2one(
        'cleanup.purge.wizard.model', 'Purge Wizard', readonly=True)
    @api.multi
    def purge(self):
        """
        Unlink models upon manual confirmation.
        """
        context_flags = {
            MODULE_UNINSTALL_FLAG: True,
            'no_drop_table': True,
        }
        for line in self:
            self.env.cr.execute(
                "SELECT id, model from ir_model WHERE model = %s",
                (line.name,))
            row = self.env.cr.fetchone()
            if not row:
                continue
            self.logger.info('Purging model %s', row[1])
            attachments = self.env['ir.attachment'].search([
                ('res_model', '=', line.name)
            ])
            if attachments:
                self.env.cr.execute(
                    "UPDATE ir_attachment SET res_model = NULL "
                    "WHERE id in %s",
                    (tuple(attachments.ids), ))
            self.env['ir.model.constraint'].search([
                ('model', '=', line.name),
            ]).unlink()
            relations = self.env['ir.model.fields'].search([
                ('relation', '=', row[1]),
            ]).with_context(**context_flags)
            for relation in relations:
                try:
                    # Fails if the model on the target side
                    # cannot be instantiated
                    relation.unlink()
                except KeyError:
                    pass
                except AttributeError:
                    pass
            self.env['ir.model.relation'].search([
                ('model', '=', line.name)
            ]).with_context(**context_flags).unlink()
            self.env['ir.model'].browse([row[0]])\
                .with_context(**context_flags).unlink()
            line.write({'purged': True})
            self.env.cr.commit()
        return True
 class CleanupPurgeWizardModel(models.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.model'
    _description = 'Purge models'
    @api.model
    def find(self):
        """
        Search for models that cannot be instantiated.
        """
        res = []
        self.env.cr.execute("SELECT model from ir_model")
        for model, in self.env.cr.fetchall():
            if model not in self.env:
                res.append((0, 0, {'name': model}))
        if not res:
            raise UserError(_('No orphaned models found'))
        return res
    purge_line_ids = fields.One2many(
        'cleanup.purge.line.model', 'wizard_id', 'Models to purge')
--- a/database_cleanup/models/purge_modules.py
+++ b/database_cleanup/models/purge_modules.py
@ -0,0 +1,79 @@
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from openerp import _, api, fields, models
 from openerp.exceptions import UserError
 from openerp.modules.registry import RegistryManager
 from openerp.modules.module import get_module_path
 from openerp.addons.base.ir.ir_model import MODULE_UNINSTALL_FLAG
 class IrModelData(models.Model):
    _inherit = 'ir.model.data'
    @api.model
    def _module_data_uninstall(self, modules_to_remove):
        """this function crashes for xmlids on undefined models or fields
        referring to undefined models"""
        for this in self.search([('module', 'in', modules_to_remove)]):
            if this.model == 'ir.model.fields':
                field = self.env[this.model].with_context(
                    **{MODULE_UNINSTALL_FLAG: True}).browse(this.res_id)
                if field.model not in self.env:
                    this.unlink()
                    continue
            if this.model not in self.env:
                this.unlink()
        return super(IrModelData, self)._module_data_uninstall(
            modules_to_remove)
 class CleanupPurgeLineModule(models.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.module'
    wizard_id = fields.Many2one(
        'cleanup.purge.wizard.module', 'Purge Wizard', readonly=True)
    @api.multi
    def purge(self):
        """
        Uninstall modules upon manual confirmation, then reload
        the database.
        """
        module_names = self.filtered(lambda x: not x.purged).mapped('name')
        modules = self.env['ir.module.module'].search([
            ('name', 'in', module_names)
        ])
        if not modules:
            return True
        self.logger.info('Purging modules %s', ', '.join(module_names))
        modules.write({'state': 'to remove'})
        self.env.cr.commit()
        RegistryManager.new(self.env.cr.dbname, update_module=True)
        modules.unlink()
        return self.write({'purged': True})
 class CleanupPurgeWizardModule(models.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.module'
    _description = 'Purge modules'
    @api.model
    def find(self):
        res = []
        for module in self.env['ir.module.module'].search([]):
            if get_module_path(module.name):
                continue
            if module.state == 'uninstalled':
                module.unlink()
                continue
            res.append((0, 0, {'name': module.name}))
        if not res:
            raise UserError(_('No modules found to purge'))
        return res
    purge_line_ids = fields.One2many(
        'cleanup.purge.line.module', 'wizard_id', 'Modules to purge')
--- a/database_cleanup/models/purge_tables.py
+++ b/database_cleanup/models/purge_tables.py
@ -1,44 +1,24 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    OpenERP, Open Source Management Solution
 #    This module copyright (C) 2014 Therp BV (<http://therp.nl>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
 #    published by the Free Software Foundation, either version 3 of the
 #    License, or (at your option) any later version.
 #
 #    This program is distributed in the hope that it will be useful,
 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #    GNU Affero General Public License for more details.
 #
 #    You should have received a copy of the GNU Affero General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from openerp import api, fields, models, _
 from openerp.exceptions import UserError
 from openerp.osv import orm, fields
 from openerp.tools.translate import _
 class CleanupPurgeLineTable(orm.TransientModel):
 class CleanupPurgeLineTable(models.TransientModel):
    _inherit = 'cleanup.purge.line'
    _name = 'cleanup.purge.line.table'
    _columns = {
        'wizard_id': fields.many2one(
            'cleanup.purge.wizard.table', 'Purge Wizard', readonly=True),
        }
    wizard_id = fields.Many2one(
        'cleanup.purge.wizard.table', 'Purge Wizard', readonly=True)
    def purge(self, cr, uid, ids, context=None):
    @api.multi
    def purge(self):
        """
        Unlink tables upon manual confirmation.
        """
        lines = self.browse(cr, uid, ids, context=context)
        tables = [line.name for line in lines]
        for line in lines:
        tables = self.mapped('name')
        for line in self:
            if line.purged:
                continue
@ -49,7 +29,7 @@ class CleanupPurgeLineTable(orm.TransientModel):
            # message-id/22895.1226088573@sss.pgh.pa.us
            # Only using the constraint name and the source table,
            # but I'm leaving the rest in for easier debugging
            cr.execute(
            self.env.cr.execute(
                """
                SELECT conname, confrelid::regclass, af.attname AS fcol,
                    conrelid::regclass, a.attname AS col
@ -64,48 +44,40 @@ class CleanupPurgeLineTable(orm.TransientModel):
                AND confrelid::regclass = '%s'::regclass;
                """ % line.name)
            for constraint in cr.fetchall():
            for constraint in self.env.cr.fetchall():
                if constraint[3] in tables:
                    self.logger.info(
                        'Dropping constraint %s on table %s (to be dropped)',
                        constraint[0], constraint[3])
                    cr.execute(
                    self.env.cr.execute(
                        "ALTER TABLE %s DROP CONSTRAINT %s" % (
                            constraint[3], constraint[0]))
            self.logger.info(
                'Dropping table %s', line.name)
            cr.execute("DROP TABLE \"%s\"" % (line.name,))
            self.env.cr.execute("DROP TABLE \"%s\"" % (line.name,))
            line.write({'purged': True})
            cr.commit()
            self.env.cr.commit()
        return True
 class CleanupPurgeWizardTable(orm.TransientModel):
 class CleanupPurgeWizardTable(models.TransientModel):
    _inherit = 'cleanup.purge.wizard'
    _name = 'cleanup.purge.wizard.table'
    _description = 'Purge tables'
    def default_get(self, cr, uid, fields, context=None):
        res = super(CleanupPurgeWizardTable, self).default_get(
            cr, uid, fields, context=context)
        if 'name' in fields:
            res['name'] = _('Purge tables')
        return res
    def find(self, cr, uid, context=None):
    @api.model
    def find(self):
        """
        Search for tables that cannot be instantiated.
        Ignore views for now.
        """
        model_ids = self.pool['ir.model'].search(cr, uid, [], context=context)
        # Start out with known tables with no model
        known_tables = ['wkf_witm_trans']
        for model in self.pool['ir.model'].browse(
                cr, uid, model_ids, context=context):
            model_pool = self.pool.get(model.model)
            if not model_pool:
        for model in self.env['ir.model'].search([]):
            if model.model not in self.env:
                continue
            model_pool = self.env[model.model]
            known_tables.append(model_pool._table)
            known_tables += [
                column._sql_names(model_pool)[0]
@ -118,21 +90,16 @@ class CleanupPurgeWizardTable(orm.TransientModel):
        # Cannot pass table names as a psycopg argument
        known_tables_repr = ",".join(
            [("'%s'" % table) for table in known_tables])
        cr.execute(
        self.env.cr.execute(
            """
            SELECT table_name FROM information_schema.tables
            WHERE table_schema = 'public' AND table_type = 'BASE TABLE'
            AND table_name NOT IN (%s)""" % known_tables_repr)
        res = [(0, 0, {'name': row[0]}) for row in cr.fetchall()]
        res = [(0, 0, {'name': row[0]}) for row in self.env.cr.fetchall()]
        if not res:
            raise orm.except_orm(
                _('Nothing to do'),
                _('No orphaned tables found'))
            raise UserError(_('No orphaned tables found'))
        return res
    _columns = {
        'purge_line_ids': fields.one2many(
            'cleanup.purge.line.table',
            'wizard_id', 'Tables to purge'),
        }
    purge_line_ids = fields.One2many(
        'cleanup.purge.line.table', 'wizard_id', 'Tables to purge')
--- a/database_cleanup/models/purge_wizard.py
+++ b/database_cleanup/models/purge_wizard.py
@ -0,0 +1,77 @@
 # -*- coding: utf-8 -*-
 # © 2014-2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 import logging
 from openerp import _, api, fields, models
 class CleanupPurgeLine(models.AbstractModel):
    """ Abstract base class for the purge wizard lines """
    _name = 'cleanup.purge.line'
    _order = 'name'
    name = fields.Char('Name', readonly=True)
    purged = fields.Boolean('Purged', readonly=True)
    wizard_id = fields.Many2one('cleanup.purge.wizard')
    logger = logging.getLogger('openerp.addons.database_cleanup')
    @api.multi
    def purge(self):
        raise NotImplementedError
 class PurgeWizard(models.AbstractModel):
    """ Abstract base class for the purge wizards """
    _name = 'cleanup.purge.wizard'
    _description = 'Purge stuff'
    @api.model
    def default_get(self, fields_list):
        res = super(PurgeWizard, self).default_get(fields_list)
        if 'purge_line_ids' in fields_list:
            res['purge_line_ids'] = self.find()
        return res
    @api.multi
    def find(self):
        raise NotImplementedError
    @api.multi
    def purge_all(self):
        self.mapped('purge_line_ids').purge()
        return True
    @api.model
    def get_wizard_action(self):
        wizard = self.create({})
        return {
            'type': 'ir.actions.act_window',
            'name': wizard.display_name,
            'views': [(False, 'form')],
            'res_model': self._name,
            'res_id': wizard.id,
            'flags': {
                'action_buttons': False,
                'sidebar': False,
            },
        }
    @api.multi
    def select_lines(self):
        return {
            'type': 'ir.actions.act_window',
            'name': _('Select lines to purge'),
            'views': [(False, 'tree'), (False, 'form')],
            'res_model': self._fields['purge_line_ids'].comodel_name,
            'domain': [('wizard_id', 'in', self.ids)],
        }
    @api.multi
    def name_get(self):
        return [
            (this.id, self._description)
            for this in self
        ]
    purge_line_ids = fields.One2many('cleanup.purge.line', 'wizard_id')
--- a/database_cleanup/tests/init.py
+++ b/database_cleanup/tests/init.py
@ -0,0 +1,4 @@
 # -*- coding: utf-8 -*-
 # © 2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from . import test_database_cleanup
--- a/database_cleanup/tests/test_database_cleanup.py
+++ b/database_cleanup/tests/test_database_cleanup.py
@ -0,0 +1,50 @@
 # -*- coding: utf-8 -*-
 # © 2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from psycopg2 import ProgrammingError
 from openerp.tests.common import TransactionCase
 class TestDatabaseCleanup(TransactionCase):
    def test_database_cleanup(self):
        # create an orphaned column
        self.cr.execute(
            'alter table res_users add column database_cleanup_test int')
        purge_columns = self.env['cleanup.purge.wizard.column'].create({})
        purge_columns.purge_all()
        # must be removed by the wizard
        with self.assertRaises(ProgrammingError):
            with self.registry.cursor() as cr:
                cr.execute('select database_cleanup_test from res_users')
        # create a data entry pointing nowhere
        self.cr.execute('select max(id) + 1 from res_users')
        self.env['ir.model.data'].create({
            'module': 'database_cleanup',
            'name': 'test_no_data_entry',
            'model': 'res.users',
            'res_id': self.cr.fetchone()[0],
        })
        purge_data = self.env['cleanup.purge.wizard.data'].create({})
        purge_data.purge_all()
        # must be removed by the wizard
        with self.assertRaises(ValueError):
            self.env.ref('database_cleanup.test_no_data_entry')
        # create a nonexistent model
        self.env['ir.model'].create({
            'name': 'Database cleanup test model',
            'model': 'x_database.cleanup.test.model',
        })
        self.env.cr.execute(
            'insert into ir_attachment (name, res_model, res_id, type) values '
            "('test attachment', 'database.cleanup.test.model', 42, 'binary')")
        self.registry.models.pop('x_database.cleanup.test.model')
        self.registry._pure_function_fields.pop(
            'x_database.cleanup.test.model')
        purge_models = self.env['cleanup.purge.wizard.model'].create({})
        purge_models.purge_all()
        # must be removed by the wizard
        self.assertFalse(self.env['ir.model'].search([
            ('model', '=', 'x_database.cleanup.test.model'),
        ]))
--- a/database_cleanup/views/menu.xml
+++ b/database_cleanup/views/menu.xml
--- a/database_cleanup/views/purge_columns.xml
+++ b/database_cleanup/views/purge_columns.xml
@ -1,32 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
    <data>
        <record id="purge_columns_view" model="ir.ui.view">
            <field name="name">Form view for purge columns wizard</field>
            <field name="model">cleanup.purge.wizard.column</field>
            <field name="inherit_id" ref="form_purge_wizard" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <form string="Purge columns" version="7.0">
                    <h1>
                        <field name="name"/>
                    </h1>
                    <button type="object" name="purge_all" string="Purge all columns" />
                    <button type="object" name="select_lines" string="Select lines" />
                    <field name="purge_line_ids" colspan="4" nolabel="1">
                        <form string="Purge columns">
                            <group>
                                <field name="name" />
                <field name="name" position="after">
                    <field name="model_id" />
                                <field name="purged" invisible="0" />
                            </group>
                            <footer>
                                <button type="object" name="purge"
                                        icon="gtk-cancel" string="Purge this column"
                                        attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                </field>
                </form>
            </field>
        </record>
@ -40,15 +22,12 @@
        <record id="purge_column_line_tree" model="ir.ui.view">
            <field name="model">cleanup.purge.line.column</field>
            <field name="inherit_id" ref="tree_purge_line" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <tree string="Purge columns">
                    <field name="name" />
                <field name="name" position="after">
                    <field name="model_id" />
                    <field name="purged" invisible="0" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this column"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
                </field>
            </field>
        </record>
--- a/database_cleanup/views/purge_data.xml
+++ b/database_cleanup/views/purge_data.xml
@ -1,32 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
    <data>
        <record id="purge_data_view" model="ir.ui.view">
            <field name="name">Form view for purge data wizard</field>
            <field name="model">cleanup.purge.wizard.data</field>
            <field name="inherit_id" ref="form_purge_wizard" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <form string="Purge data entries that refer to missing resources" version="7.0">
                    <h1>
                        <field name="name"/>
                    </h1>
                    <button type="object" name="purge_all" string="Purge all data" />
                    <button type="object" name="select_lines" string="Select lines" />
                    <field name="purge_line_ids" colspan="4" nolabel="1">
                        <form string="Purge data">
                            <group>
                                <field name="name" />
                <field name="name" position="after">
                    <field name="data_id" />
                                <field name="purged" invisible="0" />
                            </group>
                            <footer>
                                <button type="object" name="purge"
                                        icon="gtk-cancel" string="Purge this data"
                                        attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                </field>
                </form>
            </field>
        </record>
@ -40,15 +22,12 @@
        <record id="purge_data_line_tree" model="ir.ui.view">
            <field name="model">cleanup.purge.line.data</field>
            <field name="inherit_id" ref="tree_purge_line" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <tree string="Purge data">
                    <field name="name" />
                <field name="name" position="after">
                    <field name="data_id" />
                    <field name="purged" invisible="0" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this data"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
                </field>
            </field>
        </record>
--- a/database_cleanup/views/purge_menus.xml
+++ b/database_cleanup/views/purge_menus.xml
@ -2,29 +2,11 @@
 <openerp>
    <data>
        <record id="purge_menus_view" model="ir.ui.view">
            <field name="name">Form view for purge menus wizard</field>
            <field name="model">cleanup.purge.wizard.menu</field>
            <field name="inherit_id" ref="form_purge_wizard" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <form>
                    <h1>
                        <field name="name"/>
                    </h1>
                    <button type="object" name="purge_all" string="Purge all menus" />
                    <button type="object" name="select_lines" string="Select lines" />
                    <field name="purge_line_ids">
                        <form>
                            <group>
                                <field name="name" />
                                <field name="purged" invisible="0" />
                            </group>
                            <footer>
                                <button type="object" name="purge"
                                    icon="gtk-cancel" string="Purge this menu"
                                    attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                    </field>
                </form>
                <data/>
            </field>
        </record>
@ -38,14 +20,10 @@
        <record id="purge_menu_line_tree" model="ir.ui.view">
            <field name="model">cleanup.purge.line.menu</field>
            <field name="inherit_id" ref="tree_purge_line" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <tree>
                    <field name="name" />
                    <field name="purged" invisible="0" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this model"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
                <data />
            </field>
        </record>
--- a/database_cleanup/views/purge_models.xml
+++ b/database_cleanup/views/purge_models.xml
@ -1,31 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
    <data>
        <record id="purge_models_view" model="ir.ui.view">
            <field name="name">Form view for purge models wizard</field>
            <field name="model">cleanup.purge.wizard.model</field>
            <field name="inherit_id" ref="form_purge_wizard" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <form string="Purge models" version="7.0">
                    <h1>
                        <field name="name"/>
                    </h1>
                    <button type="object" name="purge_all" string="Purge all models" />
                    <button type="object" name="select_lines" string="Select lines" />
                    <field name="purge_line_ids" colspan="4" nolabel="1">
                        <form string="Purge models">
                            <group>
                                <field name="name" />
                                <field name="purged" invisible="0" />
                            </group>
                            <footer>
                                <button type="object" name="purge"
                                        icon="gtk-cancel" string="Purge this model"
                                        attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                    </field>
                </form>
                <data />
            </field>
        </record>
@ -39,14 +20,10 @@
        <record id="purge_model_line_tree" model="ir.ui.view">
            <field name="model">cleanup.purge.line.model</field>
            <field name="inherit_id" ref="tree_purge_line" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <tree string="Purge models">
                    <field name="name" />
                    <field name="purged" invisible="0" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this model"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
                <data />
            </field>
        </record>
--- a/database_cleanup/views/purge_modules.xml
+++ b/database_cleanup/views/purge_modules.xml
@ -1,31 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
    <data>
        <record id="purge_modules_view" model="ir.ui.view">
            <field name="name">Form view for purge modules wizard</field>
            <field name="model">cleanup.purge.wizard.module</field>
            <field name="inherit_id" ref="form_purge_wizard" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <form string="Purge modules" version="7.0">
                    <h1>
                        <field name="name"/>
                    </h1>
                    <button type="object" name="purge_all" string="Purge all modules" />
                    <button type="object" name="select_lines" string="Select lines" />
                    <field name="purge_line_ids" colspan="4" nolabel="1">
                        <form string="Purge modules">
                            <group>
                                <field name="name" />
                                <field name="purged" invisible="0" />
                            </group>
                            <footer>
                                <button type="object" name="purge"
                                        icon="gtk-cancel" string="Purge this module"
                                        attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                    </field>
                </form>
                <data />
            </field>
        </record>
@ -39,14 +20,10 @@
        <record id="purge_module_line_tree" model="ir.ui.view">
            <field name="model">cleanup.purge.line.module</field>
            <field name="inherit_id" ref="tree_purge_line" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <tree string="Purge modules">
                    <field name="name" />
                    <field name="purged" invisible="0" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this module"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
                <data/>
            </field>
        </record>
--- a/database_cleanup/views/purge_tables.xml
+++ b/database_cleanup/views/purge_tables.xml
@ -1,27 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
    <data>
        <record id="purge_tables_view" model="ir.ui.view">
            <field name="name">Form view for purge tables wizard</field>
            <field name="model">cleanup.purge.wizard.table</field>
            <field name="inherit_id" ref="form_purge_wizard" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <form string="Purge tables" version="7.0">
                    <h1>
                        <field name="name"/>
                    </h1>
                    <button type="object" name="purge_all" string="Purge all tables" />
                    <button type="object" name="select_lines" string="Select lines" />
                    <field name="purge_line_ids" colspan="4" nolabel="1">
                        <tree string="Purge tables">
                            <field name="name" />
                            <field name="purged" invisible="0" />
                            <button type="object" name="purge"
                                    icon="gtk-cancel" string="Purge this table"
                                    attrs="{'invisible': [('purged', '=', True)]}"/>
                        </tree>
                    </field>
                </form>
                <data />
            </field>
        </record>
@ -35,14 +20,10 @@
        <record id="purge_table_line_tree" model="ir.ui.view">
            <field name="model">cleanup.purge.line.table</field>
            <field name="inherit_id" ref="tree_purge_line" />
            <field name="mode">primary</field>
            <field name="arch" type="xml">
                <tree string="Purge tables">
                    <field name="name" />
                    <field name="purged" invisible="0" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this table"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
                <data />
            </field>
        </record>
--- a/database_cleanup/views/purge_wizard.xml
+++ b/database_cleanup/views/purge_wizard.xml
@ -0,0 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
    <data>
        <record id="form_purge_wizard" model="ir.ui.view">
            <field name="model">cleanup.purge.wizard</field>
            <field name="arch" type="xml">
                <form>
                    <header>
                        <button type="object" name="purge_all" string="Purge all" class="oe_highlight" />
                        <button type="object" name="select_lines" string="Select lines" />
                    </header>
                    <field name="purge_line_ids">
                        <form>
                            <group>
                                <field name="name" />
                                <field name="purged" />
                            </group>
                            <footer>
                                <button type="object" name="purge" class="oe_highlight"
                                        string="Purge"
                                        attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                    </field>
                </form>
            </field>
        </record>
        <record id="tree_purge_line" model="ir.ui.view">
            <field name="model">cleanup.purge.line</field>
            <field name="arch" type="xml">
                <tree string="Purge models" delete="false">
                    <field name="name" />
                    <field name="purged" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this model"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
            </field>
        </record>
    </data>
 </openerp>