different fields for add and change pages in admin

Question

I have a django app with the following class in my admin.py:

class SoftwareVersionAdmin(ModelAdmin):
    fields = (\"product\", \"version_number\", \"descrip         


        

Answer 1

I don't think it's a good idea to override fields or exclude or form, because they are config attributes, so they would not initialize for every request.
I think the accepted answer by shanyu is a good solution.

Or we can use the method from UserAdmin:

def get_fieldsets(self, request, obj=None):                                  
    if not obj:                                                                                                 
        return self.add_fieldsets                                            
    return super(UserAdmin, self).get_fieldsets(request, obj)  

Remember to assign the add_fieldsets yourself. Unfortunately it doesn't fit my use case.

For Django 1.7. I don't know how they are implemented in other versions.