copy-paste code from mail_thread.py

models.py

@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+from openerp.osv import osv,fields
+from openerp import SUPERUSER_ID
+
+class mail_thread(osv.Model):
+    _inherit = "mail.thread"
+
+    def message_track(self, cr, uid, ids, tracked_fields, initial_values, context=None):
+
+        def convert_for_display(value, col_info):
+            if not value and col_info['type'] == 'boolean':
+                return 'False'
+            if not value:
+                return ''
+            if col_info['type'] == 'many2one':
+                return value.name_get()[0][1]
+            if col_info['type'] == 'selection':
+                return dict(col_info['selection'])[value]
+            return value
+
+        def format_message(message_description, tracked_values):
+            message = ''
+            if message_description:
+                message = '<span>%s</span>' % message_description
+            for name, change in tracked_values.items():
+                message += '<div> &nbsp; &nbsp; &bull; <b>%s</b>: ' % change.get('col_info')
+                if change.get('old_value'):
+                    message += '%s &rarr; ' % change.get('old_value')
+                message += '%s</div>' % change.get('new_value')
+            return message
+
+        if not tracked_fields:
+            return True
+
+        for browse_record in self.browse(cr, uid, ids, context=context):
+            initial = initial_values[browse_record.id]
+            changes = set()
+            tracked_values = {}
+
+            # generate tracked_values data structure: {'col_name': {col_info, new_value, old_value}}
+            for col_name, col_info in tracked_fields.items():
+                initial_value = initial[col_name]
+                record_value = getattr(browse_record, col_name)
+
+                if record_value == initial_value and getattr(self._all_columns[col_name].column, 'track_visibility', None) == 'always':
+                    tracked_values[col_name] = dict(col_info=col_info['string'],
+                                                        new_value=convert_for_display(record_value, col_info))
+                elif record_value != initial_value and (record_value or initial_value):  # because browse null != False
+                    if getattr(self._all_columns[col_name].column, 'track_visibility', None) in ['always', 'onchange']:
+                        tracked_values[col_name] = dict(col_info=col_info['string'],
+                                                            old_value=convert_for_display(initial_value, col_info),
+                                                            new_value=convert_for_display(record_value, col_info))
+                    if col_name in tracked_fields:
+                        changes.add(col_name)
+            if not changes:
+                continue
+
+            # find subtypes and post messages or log if no subtype found
+            subtypes = []
+            for field, track_info in self._track.items():
+                if field not in changes:
+                    continue
+                for subtype, method in track_info.items():
+                    if method(self, cr, uid, browse_record, context):
+                        subtypes.append(subtype)
+
+            posted = False
+            for subtype in subtypes:
+                subtype_rec = self.pool.get('ir.model.data').xmlid_to_object(cr, uid, subtype, context=context)
+                if not (subtype_rec and subtype_rec.exists()):
+                    _logger.debug('subtype %s not found' % subtype)
+                    continue
+                message = format_message(subtype_rec.description if subtype_rec.description else subtype_rec.name, tracked_values)
+                self.message_post(cr, uid, browse_record.id, body=message, subtype=subtype, context=context)
+                posted = True
+            if not posted:
+                message = format_message('', tracked_values)
+                self.message_post(cr, uid, browse_record.id, body=message, context=context)
+        return True