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[IMP] Module constraint install and uninstall

pull/20/head
Sylvain Calador 10 years ago
parent
commit
bdf8e4441a
  1. 7
      pos_product_category/README.rst
  2. 1
      pos_product_category/__init__.py
  3. 59
      pos_product_category/module.py
  4. 11
      pos_product_category/product.py

7
pos_product_category/README.rst

@ -6,6 +6,13 @@ POS Product Category
This module was written to replace POS categories by product categories.
Important notes:
- When the module is installed the link beetween products and POS categories
is **overwritten** by a link beetween product categories
(the link is the field pos_categ_id in the table product_template)
- When the module is uninstalled the link beetween products and POS categories
is restored in an **empty** state (NULL values)
Installation
============

1
pos_product_category/__init__.py

@ -20,3 +20,4 @@
##############################################################################
from . import product
from . import module

59
pos_product_category/module.py

@ -0,0 +1,59 @@
# -*- coding: utf-8 -*-
##############################################################################
#
# OpenERP, Open Source Management Solution
# Copyright (C) 2015-TODAY Akretion (<http://www.akretion.com>).
#
# 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 models
class Module(models.Model):
_inherit = 'ir.module.module'
def module_uninstall(self, cr, uid, ids, context=None):
context = context or {}
for module in self.browse(cr, uid, ids, context=context):
if module.name == 'pos_product_category':
# As we have loose previous POS categs restore them
# in a sane empty state
cr.execute('UPDATE product_template SET pos_categ_id=NULL')
# And restore original constraint
cr.execute('''
ALTER TABLE product_template
DROP CONSTRAINT IF EXISTS
product_template_pos_categ_id_fkey
''')
cr.execute('''
ALTER TABLE product_template ADD CONSTRAINT
"product_template_pos_categ_id_fkey"
FOREIGN KEY (pos_categ_id)
REFERENCES pos_category(id) ON DELETE SET NULL;
''')
break
return super(Module, self).module_uninstall(
cr, uid, ids, context=context
)

11
pos_product_category/product.py

@ -19,6 +19,7 @@
#
##############################################################################
import sys
from openerp import models, fields, api
@ -50,8 +51,10 @@ def _auto_end(self, cr, context=None):
context = context or {}
module = context['module']
foreign_keys = []
patched = 'openerp.addons.pos_product_category' in sys.modules
for t, k, r, d in self._foreign_keys:
if (t, k) == ('product_template', 'pos_categ_id'):
if patched and (t, k) == ('product_template', 'pos_categ_id'):
if module == 'pos_product_category':
cr.execute('''
ALTER TABLE product_template
@ -62,6 +65,12 @@ def _auto_end(self, cr, context=None):
UPDATE product_template
SET pos_categ_id = categ_id;
''')
cr.execute('''
ALTER TABLE product_template ADD CONSTRAINT
"product_template_pos_categ_id_fkey"
FOREIGN KEY (pos_categ_id)
REFERENCES product_category(id) ON DELETE SET NULL;
''')
continue
foreign_keys.append((t, k, r, d))
self._foreign_keys = foreign_keys

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