In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?

Question

In a Django form, how do I make a field read-only (or disabled)?

When the form is being used to create a new entry, all fields should be enabled - but when the recor

Answer 1

I ran across a similar problem. It looks like I was able to solve it by defining a "get_readonly_fields" method in my ModelAdmin class.

Something like this:

# In the admin.py file

class ItemAdmin(admin.ModelAdmin):

    def get_readonly_display(self, request, obj=None):
        if obj:
            return ['sku']
        else:
            return []

The nice thing is that obj will be None when you are adding a new Item, or it will be the object being edited when you are changing an existing Item.

get_readonly_display is documented here: https://docs.djangoproject.com/en/dev/ref/contrib/admin/#modeladmin-methods