[ADD] unserialize_field

unserialize_field/__init__.py

@@ -0,0 +1,22 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 Therp BV (<http://therp.nl>)
+#    All Rights Reserved
+#
+#    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 ir_model_fields

unserialize_field/__openerp__.py

@@ -0,0 +1,36 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 Therp BV (<http://therp.nl>)
+#    All Rights Reserved
+#
+#    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/>.
+#
+##############################################################################
+
+{
+    'name': 'Make database fields from fields that live in serialized fields',
+    'version': '1.0',
+    'description': """To be able to search for fields with standard methods,
+they have to be database fields. This addon makes it possible to unserialize
+them afterwards.""",
+    'author': 'Therp BV',
+    'website': 'http://www.therp.nl',
+    "category": "Tools",
+    "depends": [],
+    "data": ['ir_model_fields.xml'],
+    'installable': True,
+    'active': False,
+}

unserialize_field/ir_model_fields.py

@@ -0,0 +1,101 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 Therp BV (<http://therp.nl>)
+#    All Rights Reserved
+#
+#    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.orm import Model
+from openerp.osv import fields
+
+
+class ir_model_fields(Model):
+    _inherit = 'ir.model.fields'
+
+    def action_unserialize_field(self, cr, uid, ids, context=None):
+        step = 1000
+        offset = 0
+
+        for this in self.browse(cr, uid, ids, context=context):
+            pool_obj = self.pool.get(this.model_id.model)
+            self.create_database_column(cr, uid, pool_obj, this.name)
+            while True:
+                ids = pool_obj.search(
+                        cr, uid, 
+                        [(this.serialization_field_id.name, '!=', '{}')],
+                        offset=offset*step, limit=step, context=context)
+                if not ids:
+                    break
+                for data in pool_obj.read(cr, uid, ids,
+                                          [this.serialization_field_id.name],
+                                          context=context):
+                    self.unserialize_field(cr, uid, pool_obj, data,
+                                           this.serialization_field_id.name,
+                                           this.name)
+                offset += 1
+        return True
+
+    def create_database_column(self, cr, uid, pool_obj, field_name):
+        old = pool_obj._columns[field_name]
+        field_declaration_args = []
+        field_declaration_kwargs = dict(
+                manual=False,
+                string=old.string,
+                required=old.required,
+                readonly=old.readonly,
+                domain=old._domain,
+                context=old._context,
+                states=old.states,
+                priority=old.priority,
+                change_default=old.change_default,
+                size=old.size,
+                ondelete=old.ondelete,
+                translate=old.translate,
+                select=old.select,
+                )
+
+        if old._type == 'many2one':
+            field_declaration_args = [old._obj]
+        elif old._type == 'selection':
+            field_declaration_args = [old.selection]
+        elif old._type == 'one2many':
+            field_declaration_args = [old._obj, old._fields_id]
+            field_declaration_kwargs['limit'] = old._limit
+        elif old._type == 'many2many':
+            field_declaration_args = [old._obj]
+            field_declaration_kwargs['rel'] = old._rel
+            field_declaration_kwargs['id1'] = old._id1
+            field_declaration_kwargs['id2'] = old._id2
+            field_declaration_kwargs['limit'] = old._limit
+
+        field_declaration = getattr(fields, old._type)(
+                *field_declaration_args,
+                **field_declaration_kwargs)
+
+        pool_obj._columns[field_name] = field_declaration
+        pool_obj._auto_init(cr, {})
+
+    def unserialize_field(self, cr, uid, pool_obj, read_record,
+                          serialization_field_name, field_name):
+        if not field_name in read_record[serialization_field_name]:
+            return False
+        pool_obj.write(
+                cr, uid, read_record['id'], 
+                {
+                    field_name:
+                        read_record[serialization_field_name][field_name],
+                })

unserialize_field/ir_model_fields.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+        <record id="view_model_fields_form" model="ir.ui.view">
+            <field name="type">form</field>
+            <field name="model">ir.model.fields</field>
+            <field name="inherit_id" ref="base.view_model_fields_form" />
+            <field name="arch" type="xml">
+                <data>
+                    <field name="serialization_field_id" position="after">
+                        <button type="object" name="action_unserialize_field"
+                            string="Unserialize field" colspan="4"
+                            attrs="{'invisible': [('serialization_field_id','=',False)]}"
+                            />
+                    </field>
+                </data>
+            </field>
+        </record>
+    </data>
+</openerp>