Re: Missing something obvious? Question about forms

[kenneth gonsalves]

On Wed, 2012-01-18 at 09:42 -0500, Jeff Heard wrote:
> but there is no "ListField"  How is this normally handled? 
> 
multiplechoicefield?
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regards
Kenneth Gonsalves

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Re: Missing something obvious? Question about forms

[Jeff Heard]

There is no presentation layer, actually.  I mean, theoretically the forms
could be rendered, but I really just want them to validate input data AND..
and this is the kicker, AND I need them to provide default values, which
Forms as I understand, don't do, except for presentation.  As in, when I
pull form_instance.count, it should be 1, even if nothing was specified in
the GET dictionary.  It's not my standard...

-- Jeff

On Wed, Jan 18, 2012 at 11:06 AM, Tom Evans wrote:

> That would probably do it. You may also need to give it a different
> widget, I'd guess that a  is not how you would present this to
> the user - although maybe you are just using the form for processing
> and not to generate a presentation layer.
>
> Cheers
>
> Tom
>
> On Wed, Jan 18, 2012 at 4:01 PM, Jeff Heard 
> wrote:
> > Sadly these strings are arbitrary, yes...  I suppose I could subclass
> > MultipleChoiceField and kill the validator.
> >
> > On Wed, Jan 18, 2012 at 10:54 AM, Tom Evans 
> > wrote:
> >>
> >> On Wed, Jan 18, 2012 at 3:51 PM, Andre Terra 
> wrote:
> >> > https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
> >> >
> >> >
> https://docs.djangoproject.com/en/dev/ref/forms/fields/#django.forms.MultipleChoiceField
> >> >
> >> >
> >>
> >> That is how I almost replied, but a MultipleChoiceField constrains the
> >> submitted values to be within a predefined list of acceptable values.
> >> You couldn't use a MultipleChoiceField to collect an arbitrary number
> >> of arbitrary strings, it would fail validation.
> >>
> >> Cheers
> >>
> >> Tom
> >>
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> >
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Re: Missing something obvious? Question about forms

[Tom Evans]

That would probably do it. You may also need to give it a different
widget, I'd guess that a  is not how you would present this to
the user - although maybe you are just using the form for processing
and not to generate a presentation layer.

Cheers

Tom

On Wed, Jan 18, 2012 at 4:01 PM, Jeff Heard  wrote:
> Sadly these strings are arbitrary, yes...  I suppose I could subclass
> MultipleChoiceField and kill the validator.
>
> On Wed, Jan 18, 2012 at 10:54 AM, Tom Evans 
> wrote:
>>
>> On Wed, Jan 18, 2012 at 3:51 PM, Andre Terra  wrote:
>> > https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
>> >
>> > https://docs.djangoproject.com/en/dev/ref/forms/fields/#django.forms.MultipleChoiceField
>> >
>> >
>>
>> That is how I almost replied, but a MultipleChoiceField constrains the
>> submitted values to be within a predefined list of acceptable values.
>> You couldn't use a MultipleChoiceField to collect an arbitrary number
>> of arbitrary strings, it would fail validation.
>>
>> Cheers
>>
>> Tom
>>
>> --
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>>
>
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Re: Missing something obvious? Question about forms

[Jeff Heard]

Sadly these strings are arbitrary, yes...  I suppose I could subclass
MultipleChoiceField and kill the validator.

On Wed, Jan 18, 2012 at 10:54 AM, Tom Evans wrote:

> On Wed, Jan 18, 2012 at 3:51 PM, Andre Terra  wrote:
> > https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
> >
> https://docs.djangoproject.com/en/dev/ref/forms/fields/#django.forms.MultipleChoiceField
> >
> >
>
> That is how I almost replied, but a MultipleChoiceField constrains the
> submitted values to be within a predefined list of acceptable values.
> You couldn't use a MultipleChoiceField to collect an arbitrary number
> of arbitrary strings, it would fail validation.
>
> Cheers
>
> Tom
>
> --
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>
>

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Re: Missing something obvious? Question about forms

[Andre Terra]

In this case, I think he can subclass it and override the validate
method[0] and simply allow any choice to pass, right?

Cheers,
AT


[0]
https://code.djangoproject.com/browser/django/trunk/django/forms/fields.py#L780


On Wed, Jan 18, 2012 at 1:54 PM, Tom Evans  wrote:

> On Wed, Jan 18, 2012 at 3:51 PM, Andre Terra  wrote:
> > https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
> >
> https://docs.djangoproject.com/en/dev/ref/forms/fields/#django.forms.MultipleChoiceField
> >
> >
>
> That is how I almost replied, but a MultipleChoiceField constrains the
> submitted values to be within a predefined list of acceptable values.
> You couldn't use a MultipleChoiceField to collect an arbitrary number
> of arbitrary strings, it would fail validation.
>
> Cheers
>
> Tom
>
> --
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>
>

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Re: Missing something obvious? Question about forms

[Tom Evans]

On Wed, Jan 18, 2012 at 3:51 PM, Andre Terra  wrote:
> https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
> https://docs.djangoproject.com/en/dev/ref/forms/fields/#django.forms.MultipleChoiceField
>
>

That is how I almost replied, but a MultipleChoiceField constrains the
submitted values to be within a predefined list of acceptable values.
You couldn't use a MultipleChoiceField to collect an arbitrary number
of arbitrary strings, it would fail validation.

Cheers

Tom

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Re: Missing something obvious? Question about forms

[Andre Terra]

https://docs.djangoproject.com/en/dev/ref/forms/fields/#choicefield
https://docs.djangoproject.com/en/dev/ref/forms/fields/#django.forms.MultipleChoiceField


Cheers,
AT

On Wed, Jan 18, 2012 at 12:42 PM, Jeff Heard wrote:

> I have a largish API I have to implement from a standard, and it requires
> very complex HTTP processing.  I'd like to use django.forms.Form for that,
> but I can't figure out how to use a form to store a list of parameters.
>
> So while my homemade code might be:
>
> foo = int(request.get('foo', '1'))
> bar = request.getlist(bar)
>
> I can't figure out the corresponding Form class.  What I would *want* is
> something like this:
>
> class MyForm(Form):
>foo = IntegerField()
>bar = ListField(CharField)
>
> but there is no "ListField"  How is this normally handled?
>
> -- Jeff
>
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Missing something obvious? Question about forms

[Jeff Heard]

I have a largish API I have to implement from a standard, and it requires
very complex HTTP processing.  I'd like to use django.forms.Form for that,
but I can't figure out how to use a form to store a list of parameters.

So while my homemade code might be:

foo = int(request.get('foo', '1'))
bar = request.getlist(bar)

I can't figure out the corresponding Form class.  What I would *want* is
something like this:

class MyForm(Form):
   foo = IntegerField()
   bar = ListField(CharField)

but there is no "ListField"  How is this normally handled?

-- Jeff

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