On Apr 30, 5:43 pm, Lacrima <lacrima.ma...@gmail.com> wrote:
> Hello!
>
> For example I have:
> class ContactForm(forms.Form):
> def __init__(self, foo, *args, **kwargs):
> super(ContactForm, self).__init__(*args, **kwargs)
> self.fields['subject'] = forms.CharField()
> self.fields['message'] = forms.CharField()
> self.fields['sender'] = forms.EmailField()
> if foo == 'boo':
> self.fields['cc_myself'] = forms.BooleanField()
>
> In a view I have standard Django form processing like this:
> def contact(request):
> if request.method == 'POST':
> form = ContactForm(request.POST)
> if form.is_valid():
> #processing the form here
> else:
> form = ContactForm('boo')
> return render_to_response('base_contact.html', {
> 'form': form,
> })
>
> But It seems that binding and validation doesn't work if I have custom
> __init__ method with an additional parameter.
> The form never is bound.
> After submitting the form I try the next in my debug probe:>>> print
> request.method
> POST
> >>> print request.POST
>
> <QueryDict: {u'cc_myself': [u'on'], u'message': [u'I am here'],
> u'sender': [u...@me.com'], u'subject': [u'Hello']}>
>
> >>> form = ContactForm(request.POST) #I am trying to bind data to form
> >>> print form.is_bound #but it doesn't work
> False
> >>> print form.is_valid() #so form isn't valid
> False
>
> So my question: what I am doing wrong when trying to override __init__
> method?
>
> And one more... If I delete additional parameter in __init__
> definition then everything is ok:
> class ContactForm(forms.Form):
> def __init__(self, *args, **kwargs):
> super(ContactForm, self).__init__(*args, **kwargs)
> self.fields['subject'] = forms.CharField()
> self.fields['message'] = forms.CharField()
> self.fields['sender'] = forms.EmailField()
> self.fields['cc_myself'] = forms.BooleanField()
>
> >>> print request.method
> POST
> >>> print request.POST
>
> <QueryDict: {u'cc_myself': [u'on'], u'message': [u'I am here again'],
> u'sender': [u...@me.com'], u'subject': [u'Hi again']}>>>> form =
> ContactForm(request.POST)
> >>> print form.is_bound
> True
> >>> print form.is_valid()
>
> True
>
> So, please, help me resolve this problem!
>
> With regards,
> Max.
>
> (sorry if my English isn't very proper)
This is because your 'foo' variable is stealing the value of
request.POST you're passing into the form instantiation.
You could do this:
form = ContactForm(foo, data=request.POST)
because you'll need to pass foo in.
Or, define the _init__ like this:
def __init__(self, *args, **kwargs):
foo = kwargs.pop('foo', None)
...etc...
if foo = 'boo'
--
DR.
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