TypeError：“MediaDefiningClass”对象在使用nested_admin 时不可迭代

Question

我已经使用了nested_admin 来使用 Inlines 在 Admin Dashboard 中获取自定义视图。

这是我的 admin.py

from django.contrib import admin
from .models import Quizzes, Question, Answer, UsersAnswer, QuizTakers
import nested_admin

class AnswerInline(nested_admin.NestedTabularInline):
    model = Answer
    extra = 4
    max_num = 4
    
class QuestionInline(nested_admin.NestedTabularInline):
    model = Question
    inlines = [AnswerInline,]
    extra = 19
    
class QuizAdmin(nested_admin.NestedModelAdmin):
    inlines = [QuestionInline,]
    
class UsersAnswerInline(admin.TabularInline):
    model = UsersAnswer
    
class QuizTakersAdmin(admin.ModelAdmin):
    inlines = [UsersAnswerInline,]
    
    
admin.site.register(UsersAnswerInline)
admin.site.register(QuizTakers, QuizTakersAdmin)
admin.site.register(Quizzes, QuizAdmin)

并且还在主urls.py中包含了路径：

    path('nested_admin/', include('nested_admin.urls')), 

但我收到此错误：

对于 model_or_iterable 中的模型：TypeError: 'MediaDefiningClass' object is not iterable

Answer 1

我通过更改 admin.site.register(UsersAnswerInline) 消除了这个错误 到 admin.site.register(UsersAnswer) 注册模型。