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

awalker's answer helped me a lot!

I've changed his example to work with Django 1.3, using get_readonly_fields.

Usually you should declare something like this in app/admin.py:

class ItemAdmin(admin.ModelAdmin):
    ...
    readonly_fields = ('url',)

I've adapted in this way:

# In the admin.py file
class ItemAdmin(admin.ModelAdmin):
    ...
    def get_readonly_fields(self, request, obj=None):
        if obj:
            return ['url']
        else:
            return []

And it works fine. Now if you add an Item, the url field is read-write, but on change it becomes read-only.