-from .models import Attachment, Section, Lesson
+from .models import Attachment, Section, Lesson, LessonStub
class AttachmentInline(admin.TabularInline):
model = Attachment
class LessonAdmin(admin.ModelAdmin):
inlines = [AttachmentInline]
class AttachmentInline(admin.TabularInline):
model = Attachment
class LessonAdmin(admin.ModelAdmin):
inlines = [AttachmentInline]
admin.site.register(Section)
admin.site.register(Lesson, LessonAdmin)
admin.site.register(Section)
admin.site.register(Lesson, LessonAdmin)