How to change in Django Admin the default form (dropdown list) for a foreignKey model?

Question

I want to change in my django administration page the form of a field. In my model I have the 'user' as foreign key to another model. When I create a new ' programare ' in the administration page the default form-field for user it's a dropdown with all entries of ' Cont ' model. It's dizzy to search the right one, so I want to change that dropdown with a plain-text input or an autocomplete form .

class Programare(models.Model):
   user = models.ForeignKey(to=Cont, on_delete=models.CASCADE, related_name='programari')
   ...

Answer 1

I found the answer for my question. For django ^2.0 admin

class ProgramareAdmin(admin.ModelAdmin):
    model = Programare
    autocomplete_fields = ['user']

admin.site.register(Programare, ProgramareAdmin)