How do I let forms.models.ModelChoiceField.queryset relate on request.user?

[Axel Rau]

User should see only choices related to him in a ModelChoiceField.
Do I need a fresh form per request?
What would be the best approach?

Thanks, Axel
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[Vijay Khemlani]

At least what I do in those cases is to add a constructor (__init__) to the form class which takes the user as a parameter, modify the choicefield queryset, and then call the original constructor of the form.

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[Axel Rau]

Thanks, I will try this,
Axel

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[Axel Rau]

Any idea how to add __init__() to a form class, created by modelform_factory () ?

Axel

Am 02.11.2015 um 13:50 schrieb Vijay Khemlani <vkhe...@gmail.com>:

To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CALn3ei0v3POcwmw9s0beYyGXK15ybwDPooPsYDm%3D1_0XvpStpQ%40mail.gmail.com.

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[Axel Rau]

Instead off writing an __init__ for the form class, I ended up with this get_form()

in my view class:

    def get_form(self, form_class=None):

        form = self.get_form_class()

        pk = self.request.user.pk

        self.object = Account.objects.get(pk=pk)

        form_instance = form(instance=self.object)

        self.filter_modelChoices(form_instance)

        return form_instance

    

    def filter_modelChoices(self, form_instance):

        """

        Changes the model choice fields to be correctly filtered

         as required by request.user.

        """

        opts = self.model._meta

        for formfield_name in form_instance.fields:

            formfield = form_instance.fields[formfield_name]

            if isinstance(formfield, ModelChoiceField):

                [modelfield] = 

                    [f for f in opts.fields if f.name == formfield_name]

                qs = userVisibleFilterQS(

                        self.request.user.pk, 

                        False,

                        modelfield.related_model())

                if qs:

                    formfield.queryset = formfield.queryset.filter(qs)

Am 16.11.2015 um 18:38 schrieb Axel Rau <Axel...@chaos1.de>:

Any idea how to add __init__() to a form class, created by modelform_factory () ?

Axel

[Tom Evans]

On Mon, Nov 16, 2015 at 5:38 PM, Axel Rau <Axel...@chaos1.de> wrote:
>
> Any idea how to add __init__() to a form class, created by modelform_factory () ?
>
> Axel
>

modelform_factory takes many arguments, one of which is for the base
form class to use. You can provide a different base class from the
default ModelForm, make sure to derive the new base class from
ModelForm.

https://docs.djangoproject.com/en/1.8/ref/forms/models/#django.forms.models.modelform_factory

Cheers

Tom

[Axel Rau]

> Am 18.11.2015 um 15:28 schrieb 'Tom Evans' via Django users <django...@googlegroups.com>:
>
> modelform_factory takes many arguments, one of which is for the base
> form class to use. You can provide a different base class from the
> default ModelForm, make sure to derive the new base class from
> ModelForm.
>

Ah, thanks for the explanation,