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# -*- 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})
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')