Dynamically setting readonly_fields in django admin

Question

Can I change readonly_fields in my TranslationAdmin class dependent on the value of a certain field in the Translation being viewed? If so, how would I do that?

The only thing I've come up with is to make a widget that looks at the Translation and decides whether to be a readonly widget or not, but that seems like overkill for this.

Answer 1

You can inherit the function get_readonly_fields() in your admin and set readonly fields according your model's certain field value

 class TranslationAdmin(admin.ModelAdmin):
        ...

        def get_readonly_fields(self, request, obj=None):
            if obj.certainfield == something:
                return ('field1', 'field2')
            else:
                return super(TranslationAdmin, self).get_readonly_fields(request, obj)

I hope it will help you.

Answer 2

Here is an example of:

• Creating a ModelAdmin (GISDataFileAdmin) with readonly_fields

• Inheriting from that ModelAdmin (ShapefileSetAdmin) and adding an additional value to readonly_fields

   class GISDataFileAdmin(admin.ModelAdmin): # Note(!): this is a list, NOT a tuple readonly_fields = ['modified', 'created', 'md5',] class ShapefileSetAdmin(GISDataFileAdmin): def get_readonly_fields(self, request, obj=None): # inherits readonly_fields from GISDataFileAdmin and adds another # retrieve current readonly fields ro_fields = super(ShapefileSetAdmin, self).get_readonly_fields(request, obj) # check if new field already exists, if not, add it # # Note: removing the 'if not' check will add the new read-only field # each time you go to the 'add' page in the admin # eg, you can end up with: # ['modified', 'created', 'md5', 'shapefile_load_path', 'shapefile_load_path, 'shapefile_load_path', etc.] # if not 'shapefile_load_path' in ro_fields: ro_fields.append('shapefile_load_path') return ro_fields