diff --git a/rhodecode/model/db.py b/rhodecode/model/db.py
--- a/rhodecode/model/db.py
+++ b/rhodecode/model/db.py
@@ -35,6 +35,7 @@ from sqlalchemy.ext.hybrid import hybrid
 from sqlalchemy.orm import relationship, joinedload, class_mapper, validates
 from sqlalchemy.exc import DatabaseError
 from beaker.cache import cache_region, region_invalidate
+from webob.exc import HTTPNotFound
 
 from pylons.i18n.translation import lazy_ugettext as _
 
@@ -51,6 +52,7 @@ from rhodecode.lib.caching_query import 
 from rhodecode.model.meta import Base, Session
 
 
+
 URL_SEP = '/'
 log = logging.getLogger(__name__)
 
@@ -142,6 +144,14 @@ class BaseModel(object):
             return cls.query().get(id_)
 
     @classmethod
+    def get_or_404(cls, id_):
+        if id_:
+            res = cls.query().get(id_)
+            if not res:
+                raise HTTPNotFound
+            return res
+
+    @classmethod
     def getAll(cls):
         return cls.query().all()