Re: how to add an extra field in an admin form (not part of the model)

https://youtu.be/lHQI9ydQlSU

Try this video it might help, it helped me for the same problem.

Raj Patel

On Sun, 17 May, 2020, 6:50 pm Carles Pina i Estany, <carles@pina.cat> wrote:

Hi,

Last week I tried to do something in admin but it didn't work as I had guessed.

The simplification of what I wanted is to have an extra field in the admin
form.

What I tried to do is what I do in forms outside admin:

---------
class MyModelForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields['extra_field'] = forms.CharField(max_length=100)

    def save(self, *args, **kwargs):
        # here I would like to have some code using the new extra_field
       pass

    class Meta:
        model = MyModel
        fields = ['amount', 'project']

class MyModelAdmin(admin.ModelAdmin):
    form = MyModelForm
---------

The "extra_field" is not displayed in the "Add MyModel" form in the admin.

After this I tried different approaches too long to explain here (I mean, all
failed in different ways).

Does any of you expand an admin form with a new field? any idea, references,
etc. welcomed!

Thank you very much,

--
Carles Pina i Estany

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