diff --git a/models.py b/models.py
new file mode 100644
index 0000000..71db677
--- /dev/null
+++ b/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 = '%s' % message_description
+ for name, change in tracked_values.items():
+ message += '
• %s: ' % change.get('col_info')
+ if change.get('old_value'):
+ message += '%s → ' % change.get('old_value')
+ message += '%s
' % 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