Django: Admin: changing the widget of the field in Admin

I have a model with a boolean value like that:

class TagCat(models.Model):
    by_admin = models.BooleanField(default=True) 

This appears as a checkbox in admin.

  1. How could I use this as a radio button in admin?
  2. Also, how do I make it be always with a certain selected value in admin?
  3. Also, I want the default value to be the opposite, when a non-admin user adds a TagCat. This field should be hidden from him.

Can someone tell me how to do this? Django documentation doesn't seem to go in such details.


There is another way to do this that is, IMO much easier if you want every field of the same type to have the same widget. This is done by specifying a formfield_overrides to the ModelAdmin. For example:

class MyModelAdmin(admin.ModelAdmin):
    formfield_overrides = {
        models.TextField: {'widget': RichTextEditorWidget},

More in the docs:

UPDATED: Link to Django 2.0 version:

UPDATE 1: Code that gets me done with 1) (don't forget tot pass CHOICES to the BooleanField in the model)

from main.models import TagCat
from django.contrib import admin
from django import forms

class MyTagCatAdminForm(forms.ModelForm):
    class Meta:
        model = TagCat
        widgets = {

class TagCatAdmin(admin.ModelAdmin):
    form = MyTagCatAdminForm, TagCatAdmin)

The radio buttons appear ugly and displaced, but at least, they work

2) I solved with following info in

    (1, "Yes"),
    (0, "No"),
class TagCat(models.Model):
    by_admin = models.BooleanField(choices=BYADMIN_CHOICES,default=1)

Here is a more dynamic extension of mgPePe's response:

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

        self.fields['by_admin'].label = 'My new label'
        self.fields['by_admin'].widget = forms.RadioSelect()

    class Meta:
        model = TagCat

class MyAdmin(admin.ModelAdmin):
    fields = ['name', 'by_admin']
    form = MyAdminForm

This way you get full control over the fields.

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