Django ModelForm overriding __init__

Question

I'm trying to populate a Select list of a ModelForm, with the Django groups the current users belongs to.

No errors arise, but I get only an empty Select list.

This is my code:

class ArchiveForm(forms.ModelForm):

    class Meta:
        model = Archive
        fields = ['tags', 'version', 'sharegp']
        localized_fields = None
        labels = {'tags': 'Related Keywords'}


    sharegp = forms.ChoiceField(label='Share with groups')

    def __init__(self, user, *args, **kwargs):

        #import pudb;pudb.set_trace()
        self.user = user
        super(ArchiveForm, self).__init__(*args, **kwargs)
        self.fields['sharegp'].queryset = Group.objects.filter(user=self.user)
        self.fields['sharegp'].widget.choices = self.fields['sharegp'].choices

Note that if I enable the debugger in the first line of the __init__ method, and step forward all along the function, the line:

    self.fields['sharegp'].queryset

Gives the correct list containing the groups for that user, but that is not passed to the actual form.

What could I be missing? Thank you!

Orectic

Answer 1

This is how I ended up solving this:

I was wrongly choosing the type of the field: The correct one is ModelChoiceField:

class ArchiveForm(forms.ModelForm):

    class Meta:
        model = Archive
        fields = ['tags', 'version', 'sharegp']
        localized_fields = None
        labels = {'tags': 'Related Keywords'}

    user = None
    usergroups = None
    sharegp = forms.ModelChoiceField(label='Share with groups', queryset=usergroups)

    def __init__(self, user, *args, **kwargs):

        self.user = user
        self.usergroups = Group.objects.filter(user=self.user)
        super(ArchiveForm, self).__init__(*args, **kwargs)
        self.fields['sharegp'].queryset = self.usergroups

Orectic

Answer 2

That last line is overwriting the queryset assigned in previous one. Remove it.

Havre

AFAIK it is overwriting the choice set for the form widget, and this overwrite would be redundant I agree, but no eraser of the queryset at all. – Orectic

I am not sure but, @daniel-roseman is an answer or it could be a comment on answer? – Slover