django form creation on init

Question

How can I add a field in the form init function? e.g. in the code below I want to add a profile field.

class StaffForm(forms.ModelForm):
    def __init__(self, user, *args, **kwargs):
        if user.pk == 1:
            self.fields['profile'] = forms.CharField(max_length=200)

        super(StaffForm, self).__init__(*args, **kwargs)

    class Meta:
        model = Staff

I know I can add it just below the class StaffForm.... line but I want this to be dynamic depending on what user is passed in so can't do it this way.

Thanks

*Possibly duplicate of some of these:* http://stackoverflow.com/search?q=django+dynamic+form , Especially http://stackoverflow.com/questions/2390000/dynamic-django-forms-variable-fields and http://stackoverflow.com/questions/2506136/storing-dynamic-fields-in-django-forms — Felix Kling, Apr 08 '10 at 12:51
duplicated: https://stackoverflow.com/questions/22390416/setting-initial-django-form-field-value-in-the-init-method — Julio Marins, Jul 31 '17 at 19:59

score 39 · Accepted Answer · edited Feb 03 '11 at 16:15

39

Just need to switch the init function round so that super is called before adding anymore fields.

class StaffForm(forms.ModelForm):
    def __init__(self, user, *args, **kwargs):
        super(StaffForm, self).__init__(*args, **kwargs)

        if user.pk == 1:
            self.fields['profile'] = forms.CharField(max_length=200)
            self.fields['profile'].initial = 'whatever you want'
    class Meta:
        model = Staff

edited Feb 03 '11 at 16:15

Ilian Iliev

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answered Apr 08 '10 at 13:24

John

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Can you provide a reference for where we can use self.fields – user3245268 Feb 15 '19 at 17:25

django form creation on init

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