diff -r 1a22411f9264 trytond/trytond/model/fields/many2many.py
--- a/trytond/trytond/model/fields/many2many.py	Thu Jul 16 01:13:45 2015 +0200
+++ b/trytond/trytond/model/fields/many2many.py	Mon Jul 20 14:20:18 2015 +0200
@@ -270,6 +270,9 @@
         transaction = Transaction()
         table, _ = tables[None]
         name, operator, value = domain[:3]
+        method = getattr(Model, 'domain_%s' % name, None)
+        if method:
+            return method(domain, tables)

         if Relation._history and transaction.context.get('_datetime'):
             relation = Relation.__table_history__()
diff -r 1a22411f9264 trytond/trytond/model/fields/many2one.py
--- a/trytond/trytond/model/fields/many2one.py	Thu Jul 16 01:13:45 2015 +0200
+++ b/trytond/trytond/model/fields/many2one.py	Mon Jul 20 14:20:18 2015 +0200
@@ -141,6 +141,9 @@

         table, _ = tables[None]
         name, operator, value = domain[:3]
+        method = getattr(Model, 'domain_%s' % name, None)
+        if method:
+            return method(domain, tables)
         column = self.sql_column(table)
         if '.' not in name:
             if operator in ('child_of', 'not child_of'):
diff -r 1a22411f9264 trytond/trytond/model/fields/one2many.py
--- a/trytond/trytond/model/fields/one2many.py	Thu Jul 16 01:13:45 2015 +0200
+++ b/trytond/trytond/model/fields/one2many.py	Mon Jul 20 14:20:18 2015 +0200
@@ -231,6 +231,9 @@
         transaction = Transaction()
         table, _ = tables[None]
         name, operator, value = domain[:3]
+        method = getattr(Model, 'domain_%s' % name, None)
+        if method:
+            return method(domain, tables)

         if Target._history and transaction.context.get('_datetime'):
             target = Target.__table_history__()
diff -r 1a22411f9264 trytond/trytond/model/fields/property.py
--- a/trytond/trytond/model/fields/property.py	Thu Jul 16 01:13:45 2015 +0200
+++ b/trytond/trytond/model/fields/property.py	Mon Jul 20 14:20:18 2015 +0200
@@ -72,6 +72,9 @@
         cursor = Transaction().cursor

         name, operator, value = domain
+        method = getattr(Model, 'domain_%s' % name, None)
+        if method:
+            return method(domain, tables)

         sql_type = self._field.sql_type().base

diff -r 1a22411f9264 trytond/trytond/model/fields/reference.py
--- a/trytond/trytond/model/fields/reference.py	Thu Jul 16 01:13:45 2015 +0200
+++ b/trytond/trytond/model/fields/reference.py	Mon Jul 20 14:20:18 2015 +0200
@@ -125,6 +125,9 @@
             return super(Reference, self).convert_domain(domain, tables, Model)
         pool = Pool()
         name, operator, value, target = domain[:4]
+        method = getattr(Model, 'domain_%s' % name, None)
+        if method:
+            return method(domain, tables)
         Target = pool.get(target)
         table, _ = tables[None]
         name, target_name = name.split('.', 1)