Django Admin: Order by value on related Foreign Key

Question

I\'m trying to sort a Django Admin list page by a specific value in the objects\' related foreign key set.

Specifically, in the below code, I want the ContentAdmin v

Answer 1

If I understand correctly, you can try this from ModelAdmin.list_display in Django's documentation:

Usually, elements of list_display that aren't actual database fields can't be used in sorting (because Django does all the sorting at the database level).

However, if an element of list_display represents a certain database field, you can indicate this fact by setting the admin_order_field attribute of the item.

For example:

class Person(models.Model):
    first_name = models.CharField(max_length=50)
    color_code = models.CharField(max_length=6)

    def colored_first_name(self):
        return '%s' % (self.color_code, self.first_name)
    colored_first_name.allow_tags = True
    colored_first_name.admin_order_field = 'first_name'

class PersonAdmin(admin.ModelAdmin):
    list_display = ('first_name', 'colored_first_name')

The above will tell Django to order by the first_name field when trying to sort by colored_first_name in the admin.

You can try this workaround in your code for the sorting.