Django: How to change a field widget in a Inline Formset

Question

I am new to Django and I think I am missing this in the docs.
The problem is that in inline-formset I dont declare a form, just pass two models to construct it.
I want to know how can I change a widget of a single field using inline formset?

possible duplicate of [Django Inline Formsets using custom form](http://stackoverflow.com/questions/5106327/django-inline-formsets-using-custom-form) — Martey, May 29 '15 at 09:25

score 21 · Answer 1 · answered May 12 '15 at 13:14

21

As of Django 1.6, you can use the widgets parameter of modelformset_factory in order to customize the widget of a particular field:

AuthorFormSet = modelformset_factory(Author, widgets={
    'name': Textarea(attrs={'cols': 80, 'rows': 20})
})

and therefore the same parameter for inlineformset_factory (which uses modelformset_factory):

AuthorInlineFormSet = inlineformset_factory(Author, Book, fields=['name'], widgets={
    'name': Textarea(attrs={'cols': 80, 'rows': 20})
})

answered May 12 '15 at 13:14

Wtower

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1

kindly could you update your answer to new versions 3.* ? – Poula Adel Apr 08 '20 at 16:24
I've resolved with inlineformset_factory(MotherModel, ChildModel, form=MyForm, extra=1) – IlConte Aug 17 '20 at 18:06
How do you add widget for the first form, and not the extra ones? – AnonymousUser Apr 18 '22 at 07:06

score 6 · Answer 2 · answered Aug 21 '12 at 12:58

This is an example of customizing one field using formfield_callback:

def formfield_callback(field):
    if isinstance(field, models.ChoiceField) and field.name == 'target_field_name':
        return fields.ChoiceField(choices = SAMPLE_CHOICES_LIST, label='Sample Label')
    return field.formfield()

FormSet = inlineformset_factory(ModelA, ModelB, extra=1, formfield_callback = formfield_callback)

score 3 · Answer 3 · answered Aug 21 '12 at 12:25

3

You need to define a form and update widget in the Meta class. Look at Overriding the default field types or widgets

answered Aug 21 '12 at 12:25

Rohan

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Thank you for the answer! But how to specify a form to be used in a inline-formset? – nsbm Aug 21 '12 at 12:38
@nsbm, you can define a model form and create `formset` (not `modelformset` from it. – Rohan Aug 21 '12 at 12:49

score 2 · Answer 4 · answered Nov 27 '15 at 20:31

you can subclass the formset and override the add_fields method. This worked for me and I am using Django 1.5 :( .

AuthorInlineFormSet = inlineformset_factory(Author, Book)
class AuthorFormSet(AuthorInlineFormSet):
        def add_fields(self, form, index):
            super(ReferenceForm,self).add_fields(form,index)
            form.fields["name"] = forms.CharField(widget=forms.TextInput())

score 0 · Answer 5 · answered Aug 21 '23 at 16:08

I know this is a really old thread. Now we can do this using django ModelForm itself.

Add your model form in forms.py with widgets.

forms.py

class QAForm(forms.ModelForm):
    class Meta:
        model = QA
        fields = ['question', 'answer', 'status']
        widgets = {
            'question': widgets.Textarea(
                attrs={
                    'class': 'form-control',
                    'rows': 3,
                    'cols': 40
                }
            ),
            'answer': widgets.Textarea(
                attrs={
                    'class': 'form-control',
                    'rows': 3,
                    'cols': 40
                }
            ),
            'status': widgets.Select(
                attrs={
                    'class': 'form-select'
                }
            )
        }

pass it using from parameter for your modelformset_factory like following in your views.py

views.py

QAFormSet = modelformset_factory(
                                 models.QA,
                                 fields=["question", "answer", "status"],
                                 form=QAForm
                                )

Django: How to change a field widget in a Inline Formset

5 Answers5

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