Matt Wilson schrieb: > I got a controller that accepts a start_date and a stop_date > parameter. I want to validate that the stop_date is after the > start_date. > > I want to do this in my @validate, not in my controller guts. > > I read the example schema validator about matching passwords, but I > need more help. Is this even possible?
Yes, you need to write a custom validator that can be used as a chained_validator. This can then transform both given dates in to datatime.date object and compare them. Have you read this? http://docs.turbogears.org/1.0/FormValidationWithSchemas#using-custom-validators-in-schemas The trick with chained validators is that they get passed a dictionary of form values not a single value. Your validator needs to pick the two dates from the dictionary and then do the validation on those. Another cave-at is the error message. Instead of just raising validators.Invalid, you need to set the error_dict as well, so that the validation error messages only appear next to the fields with the errors (and not all fields): So the general structure for a validator that can be used as a chained validator is: class MyValidator(validators.FancyValidator): messages = dict( invalid = "Invalid value '%(value)s' for field '%(name)s'." ) def validate_python(self, value, state): try: if isinstance(value, dict): myvalue = value.get('myvalue') else: myvalue = value # do whatever checks you need to do for validation here if not is_valid(myvalue): raise ValueEror except ValueError, exc: msg = self.message('invalid', state, name='myvalue', value=myvalue) if isinstance(value, dict): raise validators.Invalid(msg, value, state, error_dict={'myvalue': msg}) else: raise validators.Invalid(msg, myvalue, state) HTH, Chris --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "TurboGears" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/turbogears?hl=en -~----------~----~----~----~------~----~------~--~---
