knowledge/document_page_approval/document_page_approval.py

# -*- encoding: utf-8 -*-
##############################################################################
#    
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2013 Savoir-faire Linux (<http://www.savoirfairelinux.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.osv import fields, orm
from datetime import *

class document_page_history_wkfl(orm.Model):
    _inherit = 'document.page.history'
    
    def page_approval_draft(self, cr, uid, ids):
        self.write(cr, uid, ids, { 'state' : 'draft' })
        return True
    
    def page_approval_approved(self, cr, uid, ids):
        self.write(cr, uid, ids, { 'state' : 'approved',
                                  'approved_date' : datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
                                  'approved_uid': uid
                                  })
        return True
    
    def can_user_approve_page(self, cr, uid, ids, name, args, context=None):
        user = self.pool.get('res.users').browse(cr,uid,uid)
        res = {}
        for page in self.browse(cr, uid, ids, context=context):
            res[page.id]= self.can_user_approve_this_page(page.page_id, user)
        
        return res
    
    def can_user_approve_this_page(self, page, user):
        if page:
            res = page.approver_gid in user.groups_id
            res = res or self.can_user_approve_this_page(page.parent_id, user)
        else:
            res=False
            
        return res
        
    _columns = {
        'state': fields.selection([
            ('draft','Draft'),
            ('approved','Approved')], 'Status', readonly=True),
        'approved_date': fields.datetime("Approved Date"),
        'approved_uid': fields.many2one('res.users', "Approved By"),
        'is_parent_approval_required': fields.related('page_id', 'is_parent_approval_required', string="parent approval", type='boolean', store=False),
        'approver_gid': fields.related('page_id', 'approver_gid', string="Approver group", type='many2one', relation='res.groups', store=False),
        'can_user_approve_page': fields.function(can_user_approve_page, string="can user approve this page", type='boolean', store=False),
        }
        
class document_page_approval(orm.Model):
    _inherit = 'document.page'
    def _get_display_content(self, cr, uid, ids, name, args, context=None):
        res = {}
        for page in self.browse(cr, uid, ids, context=context):
            content=""
            if page.type == "category":
               content = self._get_page_index(cr, uid, page, link=False)
            else:
                history = self.pool.get('document.page.history')
                if self.is_approval_required(page):
                    history_ids = history.search(cr, uid,[('page_id', '=', page.id), ('state', '=', 'approved')], limit=1, order='create_date DESC')
                    for h in history.browse(cr, uid, history_ids):
                        content = h.content
                else:
                    content = page.content
            res[page.id] =  content
        return res
    
    def _get_approved_date(self, cr, uid, ids, name, args, context=None):
        res = {}
        for page in self.browse(cr, uid, ids, context=context):
            if self.is_approval_required(page):
                history = self.pool.get('document.page.history')
                history_ids = history.search(cr, uid,[('page_id', '=', page.id), ('state', '=', 'approved')], limit=1, order='create_date DESC')
                approved_date = False
                for h in history.browse(cr, uid, history_ids):
                    approved_date = h.approved_date
                res[page.id] =  approved_date
            else:
                res[page.id] =  ""
                
        return res
        
    def _get_approved_uid(self, cr, uid, ids, name, args, context=None):
        res = {}
        for page in self.browse(cr, uid, ids, context=context):
            if self.is_approval_required(page):
                history = self.pool.get('document.page.history')
                history_ids = history.search(cr, uid,[('page_id', '=', page.id), ('state', '=', 'approved')], limit=1, order='create_date DESC')
                approved_uid = False
                for h in history.browse(cr, uid, history_ids):
                    approved_uid = h.approved_uid.id
                res[page.id] =  approved_uid
            else:
                res[page.id] =  ""
        
        return res
        
    def _is_parent_approval_required(self, cr, uid, ids, name, args, context=None):
        res = {}
        for page in self.browse(cr, uid, ids, context=context):
            res[page.id]= self.is_approval_required(page)
        
        return res
    
    def is_approval_required(self, page):
        if page:
            res = page.approval_required
            res = res or self.is_approval_required(page.parent_id)
        else:
            res=False
            
        return res
        
    _columns = {
        'display_content': fields.function(_get_display_content, string='Displayed Content', type='text'),
        'approved_date': fields.function(_get_approved_date, string="Approved Date", type='datetime'),
        'approved_uid': fields.function(_get_approved_uid, string="Approved By", type='many2one', obj='res.users'),
        'approval_required': fields.boolean("Require approval"),
        'is_parent_approval_required': fields.function(_is_parent_approval_required, string="parent approval", type='boolean'),
        'approver_gid': fields.many2one("res.groups", "Approver group"),
    }
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