Forms: custom clean for DateField
Hi all,
I've some difficulties in a custom clean function in the following
form:
class SelectDateForm(forms.Form):
firstDate = forms.DateField(widget=AdminDateWidget)
lastDate = forms.DateField(widget=AdminDateWidget)
'cause I want to check if firstDate is minor than lastDate (and
obviously the format of input),
I've defined a custom validation like this:
def clean(self):
super(forms.DateField, self).clean()
data = self.cleaned_data
if (data['firstDate'] >= data['lastDate']):
raise ValidationError("Error")
# else
return data
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Re: Forms: custom clean for DateField
Sorry, i've posted without finishing the message :) So, if I call clean(self), Django give me this exception for the following line: super(forms.DateField, self).clean() Exception Type: TypeError Exception Value: super(type, obj): obj must be an instance or subtype of type To solve it I tried to replace super(forms.DateField, self).clean() with: super(DateField, self.fields['firstDate']).clean(self) but I think isn't correct and however the super class doesn't raises any exception for input that isn't in a date format. Please, give me any ideas --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: Forms: custom clean for DateField
Hi Marco,
In Django 1.0, you don't need to call clean from clean, Django will do
that automatically for you. :)
So what you can do is:
def clean(self):
data = self.cleaned_data
if (data['firstDate'] >= data['lastDate']):
raise ValidationError("Error")
# else
return data
That should work.
For more info, see: http://docs.djangoproject.com/en/dev/ref/forms/validation/
Wim
On Mar 6, 11:46 am, MarcoS wrote:
> Sorry, i've posted without finishing the message :)
>
> So, if I call clean(self), Django give me this exception for the
> following line:
>
> super(forms.DateField, self).clean()
>
> Exception Type: TypeError
> Exception Value:
> super(type, obj): obj must be an instance or subtype of type
>
> To solve it I tried to replace
>
> super(forms.DateField, self).clean()
>
> with:
>
> super(DateField, self.fields['firstDate']).clean(self)
>
> but I think isn't correct and however the super class doesn't raises
> any
> exception for input that isn't in a date format.
>
> Please, give me any ideas
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Re: Forms: custom clean for DateField
> if (data['firstDate'] >= data['lastDate']):
> raise ValidationError("Error")
it should read
raise forms.ValidationError
If you want to have the error not only as a non_field global error,
but actually added to the fields where the error occured, you can do
the following in the clean(self) method:
error_list=self.errors.get("firstDate")
if error_list is None:
error_list=forms.util.ErrorList()
self.errors["firstDate"]=error_list
error_list.append("Error Message because firstDate > lastDate. Please
correct that!")
I dont know if this is the nicest way, but it works :)
On 18 Mrz., 11:57, Wim Feijen wrote:
> Hi Marco,
>
> In Django 1.0, you don't need to call clean from clean, Django will do
> that automatically for you. :)
>
> So what you can do is:
>
> def clean(self):
> data = self.cleaned_data
>
> if (data['firstDate'] >= data['lastDate']):
> raise ValidationError("Error")
>
> # else
> return data
>
> That should work.
>
> For more info, see:http://docs.djangoproject.com/en/dev/ref/forms/validation/
>
> Wim
>
> On Mar 6, 11:46 am, MarcoS wrote:
>
> > Sorry, i've posted without finishing the message :)
>
> > So, if I call clean(self), Django give me this exception for the
> > following line:
>
> > super(forms.DateField, self).clean()
>
> > Exception Type: TypeError
> > Exception Value:
> > super(type, obj): obj must be an instance or subtype of type
>
> > To solve it I tried to replace
>
> > super(forms.DateField, self).clean()
>
> > with:
>
> > super(DateField, self.fields['firstDate']).clean(self)
>
> > but I think isn't correct and however the super class doesn't raises
> > any
> > exception for input that isn't in a date format.
>
> > Please, give me any ideas
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