cleaned_data in forms.py?

[Leandro Alves]

Hi, 

I'm new in Django and I'm struggling myself here to find out how to get the value of a field inside the forms.py. 

Yes, I did read the documentation, keep reading and searching on the internet... But please, could someone give a tip regarding this? 

I just want to get/use the values of the fields from ContactForm1 into ContactForm2? Is that possible? 

I know that in the views.py, we can get it from the "cleaned_data"... but how in the forms.py? 

from django import forms

class ContactForm1(forms.Form):

    subject = forms.CharField(max_length=100)

    sender = forms.EmailField()

class ContactForm2(forms.Form):

    message = forms.CharField(widget=forms.Textarea)

For example I want to be able to use the value of the "sender" inside the ContactForm2, showing the message box just for some specific senders... 

Please anyone with a simple tip? 

Thanks in advance,

Leandro 

[Сергей Фурсов]

Why not use Form Wizard from django.contrib.formtools.

Look at https://docs.djangoproject.com/en/dev/ref/contrib/formtools/form-wizard/#conditionally-view-skip-specific-steps

Simply change show_message_form_condition method to something like

def show_message_form_condition(wizard):
    cleaned_data = wizard.get_cleaned_data_for_step('0') or {}
    return cleaned_data.get('sender', '') in ['adm...@example.com', 'speci...@example.com']

2012/7/10 Leandro Alves <lda...@gmail.com>

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[Leandro Alves]

Hi,

Yes... it is exactly with the form wizard that I'm trying to do it..

But how can I "receive" these values inside my forms.py? This is what I couldn't find yet. 

I want to be able use this values inside the ContactForm2 form. 

Thanks for your help so far. 

Leandro

2012/7/10 Leandro Alves <lda...@gmail.com>

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[Сергей Фурсов]

You can try to override get_form_kwargs method

def get_form_kwargs(self, step):

    if step == '1'

        cleaned_data = self.get_cleaned_data_for_step('0') or {}

        return {'sender': cleaned_data.get('sender', None)}

    else:
        return {}

and in ContactForm2 override __init__ method with kwargs, for example:

class ContactForm2(forms.Form):
    def __init__(self, *args, **kwargs):
        sender = kwargs.pop('sender', None)
        if sender in ['ema...@example.com', ]:
            # some actions
        super(ContactForm2, self).__init__(*args, **kwargs)

    message = forms.CharField(widget=forms.Textarea)

I didn't try it myself, hope this will work)

2012/7/10 Leandro Alves <lda...@gmail.com>

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[Sergiy Khohlov]

Sometimes ago I've added a post to my blog about this:

http://skhohlov.blogspot.com/2012/04/passing-values-from-view-to-form.html

2012/7/10 Сергей Фурсов <geys...@gmail.com>:

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[Leandro Alves]

Hi Сергей Ф,

It worked now!!! \o/  

But I have a question... in this case why do I need to send "None" in "get_form_kwargs" and why should I use the  "super(ContactForm2, self).__init__(*args, **kwargs)" after the init? 

Thank you very much for your help!!

Leandro

[Leandro Alves]

Hi skhohlov,

I will read it right now!!!!

Thanks for sharing. 

Leandro

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[kenneth gonsalves]

On Tue, 2012-07-10 at 05:56 -0700, Leandro Alves wrote:
> But I have a question... in this case why do I need to send "None" in
> "get_form_kwargs"

None is the default value to prevent a crash

> and why should I use the "super(ContactForm2, self).__init__(*args,
> **kwargs)" after the init?

well, that is python syntax for inheritance

(both questions relate to python syntax)
--
regards
Kenneth Gonsalves

[Leandro Alves]

Read and understood!! :)

Thanks, Kenneth!!

Leandro

[Sergiy Khohlov]

its constructor. You shoul use this because parent constructor should be save

thanks, Serge
(or Sergio for you :-) )

2012/7/10 Leandro Alves <lda...@gmail.com>:

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