I tried to implement what I want, please review (this example works for
me):
patch:
Index: fields.py
===================================================================
--- fields.py (revision 4253)
+++ fields.py (working copy)
@@ -33,7 +33,7 @@
# Tracks each time a Field instance is created. Used to retain
order.
creation_counter = 0
- def __init__(self, required=True, widget=None, label=None,
initial=None):
+ def __init__(self, required=True, widget=None, label=None,
initial=None, validator_list=[]):
# required -- Boolean that specifies whether the field is
required.
# True by default.
# widget -- A Widget class, or instance of a Widget class,
that should be
@@ -72,6 +72,9 @@
"""
if self.required and value in EMPTY_VALUES:
raise ValidationError(gettext(u'This field is required.'))
+ for validator in self.validator_list:
+ validator(value)
+
return value
def widget_attrs(self, widget):
@@ -83,8 +86,8 @@
return {}
class CharField(Field):
- def __init__(self, max_length=None, min_length=None,
required=True, widget=None, label=None, initial=None):
- self.max_length, self.min_length = max_length, min_length
+ def __init__(self, max_length=None, min_length=None,
required=True, widget=None, label=None, initial=None,
validator_list=[]):
+ self.max_length, self.min_length, self.validator_list =
max_length, min_length, validator_list
Field.__init__(self, required, widget, label, initial)
def clean(self, value):
usage:
#-------------------------------------------------------------------------------
def isSomething( value ):
if( value != 'something' ):
raise ValidationError, gettext( "not something!." )
#-------------------------------------------------------------------------------
class AddChangeProductForm( forms.Form ):
'''
form used for creating or renaming a product
'''
name = forms.CharField( validator_list = [ isSomething ] )
#-------------------------------------------------------------------------------
p.s. I'm relatevely new to python, so let your critics be constructive.
thanks.
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