admin readonly_fields not working with edtiable=False field named in fieldset

[Tim Miller]

If a field is marked editable=False, and it is included in a fieldset in a model admin, and it is also listed in readonly_fields, an error is raised:

'PostAdmin.fieldsets[1][1]['fields']' refers to field 'date_modified' that is missing from the form.

[Karen Tracey]

I can't recreate any problem along the lines you sketch out. I just added readonly_fields to one of my ModelAdmin classes that has fieldsets specified, listing several of the fields specified in fieldsets, and it works fine. They display and are not editable; no error. r12063 if it matters.

[Tim Miller]

It looks like I was misusing readonly_fields then. I was using it to display fields that were set editable=False rather than using it on normal fields.

    date_created = models.DateField(auto_now_add=True, verbose_name='created')

That model field or any normal one to which I add editable=False will normally not display in an admin add or change form but if I list it in readonly_fields it does display. It also lets me position it with fields but not with fieldsets.

[Alex Gaynor]

Using readonly_fields with editable=False should be supported. (I bet it actually works but the validation fails on it).

[Tim Miller]

I'm reopening the ticket, Alex is right in that it does actually display in admin when I comment out the relevant validation.

contrib/admin/validation.py

def check_formfield(cls, model, opts, label, field):
    if getattr(cls.form, 'base_fields', None):
        try:
            cls.form.base_fields[field]
        except KeyError:
            raise ImproperlyConfigured("'%s.%s' refers to field '%s' that "
                "is missing from the form." % (cls.__name__, label, field))
    else:
        fields = fields_for_model(model)
        try:
            fields[field]
        except KeyError:
            print "hit check_formfield keyerror #2"
            #raise ImproperlyConfigured("'%s.%s' refers to field '%s' that "
            #    "is missing from the form." % (cls.__name__, label, field))

[Tim Miller]

Related problem with readonly_fields, I'm still trying to work out if it's the app or django yet. Using django-reversion to rollback to a previous model state fails with:

Caught an exception while rendering: Key 'date_created' not found in Form

traceback: ​http://dpaste.com/hold/140812/

[Russell Keith-Magee]

Updated ticket title and description to reflect the actual problem

[Alex Gaynor]

Tests + fix.