[ADD] auth_dynamic_groups

auth_dynamic_groups/README.md

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+Description
+-----------
+This module allows defining groups whose membership is a condition expressed as
+python code. For every user, it is evaluated during login if she belongs to
+the group or not.
+
+Usage
+-----
+Check `Dynamic` on a group you want to be dynamic. Now fill in the condition,
+using `user` which is a browse record of the user in question that evaluates
+truthy if the user is supposed to be a member of the group and falsy if not.
+
+There is a constraint on the field to check for validity if this expression.
+When you're satisfied, click the button `Evaluate` to prefill the group's
+members. The condition will be checked now for every user who logs in.

auth_dynamic_groups/__init__.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 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 . import model

auth_dynamic_groups/__openerp__.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013-2015 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/>.
+#
+##############################################################################
+{
+    "name": "Dynamic groups",
+    "version": "1.0",
+    "author": "Therp BV",
+    "complexity": "normal",
+    'summary': 'Have membership conditions for certain groups',
+    "category": "Tools",
+    "depends": [
+        'base',
+    ],
+    "data": [
+        'view/res_groups.xml',
+    ],
+    "auto_install": False,
+    "installable": True,
+    "external_dependencies": {
+        'python': [],
+    },
+}

auth_dynamic_groups/model/__init__.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 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 . import res_users
+from . import res_groups

auth_dynamic_groups/model/res_groups.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 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.orm import Model
+from openerp.osv import fields
+from openerp.tools.safe_eval import safe_eval
+from openerp import SUPERUSER_ID
+
+
+class res_groups(Model):
+    _inherit = 'res.groups'
+
+    _columns = {
+        'is_dynamic': fields.boolean('Dynamic'),
+        'dynamic_group_condition': fields.text(
+            'Condition', help='The condition to be met for a user to be a '
+            'member of this group. It is evaluated as python code at login '
+            'time, you get `user` passed as a browse record')
+    }
+
+    def eval_dynamic_group_condition(self, cr, uid, ids, context=None):
+        result = True
+        user = self.pool.get('res.users').browse(cr, SUPERUSER_ID, uid,
+                                                 context=context)
+        for this in self.browse(cr, uid, ids, context=context):
+            result &= bool(
+                safe_eval(
+                    this.dynamic_group_condition,
+                    {
+                        'user': user,
+                        'any': any,
+                        'all': all,
+                        'filter': filter,
+                    }))
+        return result
+
+    def _check_dynamic_group_condition(self, cr, uid, ids, context=None):
+        try:
+            for this in self.browse(cr, uid, ids, context=context):
+                if this.is_dynamic:
+                    this.eval_dynamic_group_condition()
+        except (NameError, SyntaxError, TypeError) as e:
+            logging.info(e)
+            return False
+        return True
+
+    _constraints = [
+        (_check_dynamic_group_condition,
+         'The condition doesn\'t evaluate correctly!',
+         ['dynamic_group_condition']),
+    ]
+
+    def action_evaluate(self, cr, uid, ids, context=None):
+        user_obj = self.pool.get('res.users')
+        for user in user_obj.browse(
+                cr, uid,
+                user_obj.search(cr, uid, [], context=context),
+                context=context):
+            user_obj.update_dynamic_groups(user.id, cr.dbname)

auth_dynamic_groups/model/res_users.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    This module copyright (C) 2013 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.models import Model
+from openerp.modules.registry import RegistryManager
+from openerp import SUPERUSER_ID
+
+
+class res_users(Model):
+    _inherit = 'res.users'
+
+    def _login(self, db, login, password):
+        uid = super(res_users, self)._login(db, login, password)
+
+        if uid:
+            self.update_dynamic_groups(uid, db)
+
+        return uid
+
+    def update_dynamic_groups(self, uid, db):
+        pool = RegistryManager.get(db)
+        cr = pool._db.cursor()
+        user = pool.get('res.users').browse(cr, SUPERUSER_ID, uid)
+        groups_obj = pool.get('res.groups')
+        user.write(
+            {
+                'groups_id': [
+                    (4, dynamic_group.id)
+                    if dynamic_group.eval_dynamic_group_condition()
+                    else (3, dynamic_group.id)
+                    for dynamic_group in groups_obj.browse(
+                        cr, uid,
+                        groups_obj.search(cr, uid,
+                                          [('is_dynamic', '=', True)]))
+                ],
+            })
+        cr.commit()
+        cr.close()

auth_dynamic_groups/view/res_groups.xml

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+<openerp>
+    <data>
+        <record model="ir.ui.view" id="view_groups_form">
+            <field name="inherit_id" ref="base.view_groups_form" />
+            <field name="view_type">form</field>
+            <field name="model">res.groups</field>
+            <field name="arch" type="xml">
+                <data>
+                    <field name="name" position="after">
+                        <field name="is_dynamic" />
+                    </field>
+                    <field name="users" position="attributes">
+                        <attribute name="attrs">{'readonly': [('is_dynamic', '=', True)]}</attribute>
+                    </field>
+                    <field name="users" position="before">
+                        <field
+                            name="dynamic_group_condition"
+                            colspan="4" nolabel="1"
+                            attrs="{'invisible': [('is_dynamic', '=', False)]}" />
+                        <button
+                            type="object"
+                            name="action_evaluate"
+                            string="Evaluate"
+                            attrs="{'invisible': [('is_dynamic', '=', False)]}" />
+                    </field>
+                </data>
+            </field>
+        </record>
+    </data>
+</openerp>