diff --git a/applications/welcome/controllers/default.py b/applications/welcome/controllers/default.py
index 19013477..b2f2a5dd 100644
--- a/applications/welcome/controllers/default.py
+++ b/applications/welcome/controllers/default.py
@@ -9,9 +9,6 @@
 ## - api is an example of Hypermedia API support and access control
 #########################################################################
 
-def test():
-    return locals()
-
 def index():
     """
     example action using the internationalization operator T and flash
diff --git a/applications/welcome/models/db.py b/applications/welcome/models/db.py
index 932a7a60..ab0c624e 100644
--- a/applications/welcome/models/db.py
+++ b/applications/welcome/models/db.py
@@ -50,7 +50,6 @@ service = Service()
 plugins = PluginManager()
 
 ## create all tables needed by auth if not custom tables
-auth.settings.extra_fields['auth_user'] = [Field('claims','list:string')]
 auth.define_tables(username=False, signature=False)
 
 ## configure email
diff --git a/gluon/dal.py b/gluon/dal.py
index 07eba094..f09b1993 100644
--- a/gluon/dal.py
+++ b/gluon/dal.py
@@ -246,7 +246,7 @@ except ImportError:
             simplejson = None
 
 LOGGER = logging.getLogger("web2py.dal")
-DEFAULT = lambda: 0
+DEFAULT = lambda: None
 
 GLOBAL_LOCKER = threading.RLock()
 THREAD_LOCAL = threading.local()
@@ -10122,7 +10122,7 @@ class Field(Expression):
         self.custom_qualifier = custom_qualifier
         self.label = (label if label is not None else
                       fieldname.replace('_', ' ').title())
-        self.requires = requires if not requires in (None, DEFAULT) else []
+        self.requires = requires if requires is not None else []
         self.map_none = map_none
         self._rname = rname
 
diff --git a/gluon/html.py b/gluon/html.py
index 8d480181..ee021da1 100644
--- a/gluon/html.py
+++ b/gluon/html.py
@@ -1846,8 +1846,12 @@ class INPUT(DIV):
         if requires:
             if not isinstance(requires, (list, tuple)):
                 requires = [requires]
-            for validator in requires:
-                (value, errors) = validator(value)
+            for k,validator in enumerate(requires):
+                try:
+                    (value, errors) = validator(value)
+                except:
+                    msg = "Validation error, field:%s %s" % (name,validator)
+                    raise Exception(msg)
                 if not errors is None:
                     self.vars[name] = value
                     self.errors[name] = errors
diff --git a/gluon/sqlhtml.py b/gluon/sqlhtml.py
index 0ef3ae28..c08ae048 100644
--- a/gluon/sqlhtml.py
+++ b/gluon/sqlhtml.py
@@ -22,7 +22,8 @@ from gluon.html import FORM, INPUT, LABEL, OPTION, SELECT, COL, COLGROUP
 from gluon.html import TABLE, THEAD, TBODY, TR, TD, TH, STYLE
 from gluon.html import URL, truncate_string, FIELDSET
 from gluon.dal import DAL, Field, Table, Row, CALLABLETYPES, smart_query, \
-    bar_encode, Reference, Expression, SQLCustomType
+    bar_encode, Reference, Expression, SQLCustomType, sqlhtml_validators, \
+    DEFAULT
 from gluon.storage import Storage
 from gluon.utils import md5_hash
 from gluon.validators import IS_EMPTY_OR, IS_NOT_EMPTY, IS_LIST_OF, IS_DATE, \
@@ -1118,9 +1119,13 @@ class SQLFORM(FORM):
         extra_fields = extra_fields or []
         self.extra_fields = {}
         for extra_field in extra_fields:
-            extra_field.tablename = '_extra'
             self.fields.append(extra_field.name)
             self.extra_fields[extra_field.name] = extra_field
+            extra_field.db = table._db
+            extra_field.table = table
+            extra_field.tablename = table._tablename
+            if extra_field.requires == DEFAULT:
+                extra_field.requires = sqlhtml_validators(extra_field)
 
         for fieldname in self.fields:
             if fieldname.find('.') >= 0:
@@ -1186,7 +1191,7 @@ class SQLFORM(FORM):
 
             if cond:
 
-                # ## if field.represent is available else
+                # ## if field.re                field.requires = sqlhtml_validators(field)                field.requires = sqlhtml_validators(field)present is available else
                 # ## ignore blob and preview uploaded images
                 # ## format everything else
 
diff --git a/gluon/utils.py b/gluon/utils.py
index 5b07eed5..0c1fbfb2 100644
--- a/gluon/utils.py
+++ b/gluon/utils.py
@@ -354,7 +354,7 @@ def getipaddrinfo(host):
 
 def obj2dict(obj, processed=None):
     """
-    converts any objet into a dict, recursively
+    converts any object into a dict, recursively
     """
     processed = processed if not processed is None else set()
     if obj is None: