I noticed that de declarative statements (directly under class) are ignored
when self.fields statements are used.
class ProductForm(ModelForm):
class Meta:
model = Product
exclude = ['order']
# This one is vaporised!!!
description = forms.CharField(max_length=2,)
def __init__(self, *args, **kwargs):
super(ProductForm, self).__init__(*args, **kwargs)
# By this one!!!
self.fields['description'].max_length = 2
Still would like a regex based check in the declarative one. Anybody done this
before?
Thanx n greetz
Gerard.
Gerard Petersen wrote:
> Hi All,
>
> I have a not to exciting app (modelwise) with forms all based on modelform.
> Im trying to figure out how to realize form field input validation. Went
> through piles of text. But I'm still missing the point (or rather place).
>
> This works for a date field in a defined modelform sub class:
> self.fields['period_start_date'].input_formats = ('%d-%m-%Y',)
>
> Then if I set this on a charfield: "self.fields['description'].max_length =
> 2" and the contents of the field is 3 chars I get an error on form.is_valid()
> .. "Exception Type: KeyError, Exception Value: 'max_length'"
>
> That is correct ... sort of (because it's not valid). I'm just going nuts on
> where/how to tell Django to return the form (instance) with a field error
> message. Eventually I want to put some of the field data through a regular
> expression.
>
> Elaborate google searches came up empty. And it's not like I'm inventing the
> wheel here.
>
> Thanx a lot for any pointers.
>
>
> Gerard.
>
>
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