Can't make an object with a foreign key

Can't make an object with a foreign key. When I submit it says 

Cannot assign "u'Category object'": "Course.category" must be a "Category" instance.

 

Here is my admin form 

admin.py

 

admin.site.register(Category, list_display = ('name',))
CATEGORIES = [(category, category.name) for category in Category.objects.all()]

 

class CourseAdminForm(forms.ModelForm):
    class Meta:
        model = Course
    category = forms.ChoiceField(choices=CATEGORIES)

 

class CourseAdmin(admin.ModelAdmin):
     form = CourseAdminForm

 

admin.site.register(Course, CourseAdmin)

 

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at http://groups.google.com/group/django-users?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.