How to make a field in Django Admin readonly or non-editable based on the value from another field?
I have used readonly_fields=('amount',) but this wont fix my problem , as I need to manage it based on another field .
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3 Answers
You can override the admin's get_readonly_fields method:
class MyAdmin(admin.ModelAdmin):
def get_readonly_fields(self, request, obj=None):
if obj and obj.another_field == 'cant_change_amount':
return self.readonly_fields + ('amount',)
return self.readonly_fields
1 Comment
markwalker_
Can this be done while maintaing the field ordering?
For filling out one field from another, you need to add a prepopulated_fields attribute to the relevant ModelAdmin class. For example:
class PostAdmin(admin.ModelAdmin):
prepopulated_fields = {"slug": ("title",)}
The relevant documentation can be found here.
However, in the version of django I'm using at the moment (1.3), this seems to create an error when readonly_fields is also used.
Comments
Declare any permanently readonly_fields in the body of the class, as the readonly_fields class attribute will be accessed from validation
