[FIX] orm, fields: read_group on monetary fields now correctly makes the sum instead of ignoring them

openerp/fields.py

@@ -1098,15 +1098,20 @@ class Monetary(Field):
     type = 'monetary'
     _slots = {
         'currency_field': None,
+        'group_operator': None,         # operator for aggregating values
     }
 
     def __init__(self, string=None, currency_field=None, **kwargs):
         super(Monetary, self).__init__(string=string, currency_field=currency_field, **kwargs)
 
-    _column_currency_field = property(attrgetter('currency_field'))
     _related_currency_field = property(attrgetter('currency_field'))
+    _related_group_operator = property(attrgetter('group_operator'))
+
     _description_currency_field = property(attrgetter('currency_field'))
 
+    _column_currency_field = property(attrgetter('currency_field'))
+    _column_group_operator = property(attrgetter('group_operator'))
+
     def _setup_regular_base(self, model):
         super(Monetary, self)._setup_regular_base(model)
         if not self.currency_field:

openerp/models.py

@@ -2069,7 +2069,7 @@ class BaseModel(object):
             if f not in ('id', 'sequence')
             if f not in groupby_fields
             if f in self._fields
-            if self._fields[f].type in ('integer', 'float')
+            if self._fields[f].type in ('integer', 'float', 'monetary')
             if getattr(self._fields[f].base_field.column, '_classic_write', False)
         ]