115 lines
4.0 KiB
Python
115 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
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##############################################################################
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#
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# OpenERP, Open Source Management Solution
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# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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##############################################################################
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"""
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Evaluate workflow code found in activity actions and transition conditions.
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"""
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import openerp
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from openerp.tools.safe_eval import safe_eval as eval
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class Env(dict):
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"""
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Dictionary class used as an environment to evaluate workflow code (such as
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the condition on transitions).
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This environment provides sybmols for cr, uid, id, model name, model
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instance, column names, and all the record (the one obtained by browsing
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the provided ID) attributes.
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"""
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def __init__(self, cr, uid, model, id):
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self.cr = cr
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self.uid = uid
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self.model = model
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self.id = id
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self.ids = [id]
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self.obj = openerp.registry(cr.dbname)[model]
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self.columns = self.obj._columns.keys() + self.obj._inherit_fields.keys()
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def __getitem__(self, key):
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if (key in self.columns) or (key in dir(self.obj)):
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res = self.obj.browse(self.cr, self.uid, self.id)
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return res[key]
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else:
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return super(Env, self).__getitem__(key)
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def _eval_expr(cr, ident, workitem, lines):
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"""
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Evaluate each line of ``lines`` with the ``Env`` environment, returning
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the value of the last line.
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"""
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assert lines, 'You used a NULL action in a workflow, use dummy node instead.'
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uid, model, id = ident
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result = False
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for line in lines.split('\n'):
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line = line.strip()
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if not line:
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continue
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if line == 'True':
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result = True
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elif line == 'False':
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result = False
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else:
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env = Env(cr, uid, model, id)
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result = eval(line, env, nocopy=True)
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return result
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def execute_action(cr, ident, workitem, activity):
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"""
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Evaluate the ir.actions.server action specified in the activity.
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"""
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uid, model, id = ident
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ir_actions_server = openerp.registry(cr.dbname)['ir.actions.server']
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context = { 'active_model': model, 'active_id': id, 'active_ids': [id] }
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result = ir_actions_server.run(cr, uid, [activity['action_id']], context)
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return result
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def execute(cr, ident, workitem, activity):
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"""
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Evaluate the action specified in the activity.
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"""
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return _eval_expr(cr, ident, workitem, activity['action'])
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def check(cr, workitem, ident, transition, signal):
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"""
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Test if a transition can be taken. The transition can be taken if:
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- the signal name matches,
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- the uid is SUPERUSER_ID or the user groups contains the transition's
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group,
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- the condition evaluates to a truish value.
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"""
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if transition['signal'] and signal != transition['signal']:
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return False
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uid = ident[0]
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if uid != openerp.SUPERUSER_ID and transition['group_id']:
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registry = openerp.registry(cr.dbname)
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user_groups = registry['res.users'].read(cr, uid, [uid], ['groups_id'])[0]['groups_id']
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if transition['group_id'] not in user_groups:
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return False
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return _eval_expr(cr, ident, workitem, transition['condition'])
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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