djangodjango-formsdjango-admindjango-widget

django admin how to display widget on readonly field

I want to display my widget on the field at django admin when the field is readonly.

admin.py

class AudioTrackAdminInline(admin.StackedInline):
    model = AudioTrack
    form = AudioTrackForm
    readonly_fields = ('file',)

forms.py

class AudioTrackForm(forms.ModelForm):
    class Meta:
        model = AudioTrack
        widgets = { 'file': MediaFileInput, } # my widget

When the file is not readonly, it displays widget OK. But when i include it as readonly, i see text line. (Django does not to use my form if readonly)

How can i get it to use form even at readonly field?

or

How to display another widget if i set my field readonly?

Solution

  • I would say it's a feature.

    When field is set to readonly, Django uses display_for_field function which hardcodes the result, you can't customize it.

    Another approach would be not to set the field as readonly and override formfield_for_dbfield, an undocumented ModelAdmin method and act accordingly to your needs.