Remove order constraint on register ModelSQL

We create the foreign table if needed before adding the foreign key constraint,
thus it is no more needed to order the registration of the ModelSQL.

issue5682
review32841002

CHANGELOG

@@ -1,3 +1,4 @@
+* Remove order constraint on register ModelSQL
 * Add relate from report to translations
 
 Version 4.2.0 - 2016-11-28

trytond/model/modelsql.py

@@ -188,7 +188,11 @@ class ModelSQL(ModelStorage):
                 if field.model_name in ('res.user', 'res.group'):
                     ref = field.model_name.replace('.', '_')
                 else:
-                    ref = pool.get(field.model_name)._table
+                    ref_model = pool.get(field.model_name)
+                    ref = ref_model._table
+                    # Create foreign key table if missing
+                    if not TableHandler.table_exist(ref):
+                        TableHandler(ref_model)
                 if field_name in ['create_uid', 'write_uid']:
                     # migration from 3.6
                     table.drop_fk(field_name)

trytond/res/__init__.py

@@ -15,7 +15,6 @@ def register():
         Group,
         User,
         LoginAttempt,
-        Group2,
         UserAction,
         UserGroup,
         Warning_,

trytond/res/group.py

@@ -3,12 +3,10 @@
 "Group"
 from itertools import chain
 from ..model import ModelView, ModelSQL, fields, Unique
-from ..pool import Pool, PoolMeta
+from ..pool import Pool
 from ..tools import grouped_slice
 
-__all__ = [
-    'Group', 'Group2',
-    ]
+__all__ = ['Group']
 
 
 class MenuMany2Many(fields.Many2Many):
@@ -33,6 +31,7 @@ class Group(ModelSQL, ModelView):
     "Group"
     __name__ = "res.group"
     name = fields.Char('Name', required=True, select=True, translate=True)
+    users = fields.Many2Many('res.user-res.group', 'group', 'user', 'Users')
     model_access = fields.One2Many('ir.model.access', 'group',
        'Access Model')
     field_access = fields.One2Many('ir.model.field.access', 'group',
@@ -115,9 +114,3 @@ class Group(ModelSQL, ModelView):
         pool.get('ir.model.access')._get_access_cache.clear()
         pool.get('ir.model.field.access')._get_access_cache.clear()
         ModelView._fields_view_get_cache.clear()
-
-
-class Group2:
-    __metaclass__ = PoolMeta
-    __name__ = "res.group"
-    users = fields.Many2Many('res.user-res.group', 'group', 'user', 'Users')