为什么使用 axios 将带有数据的图像发布到 django-rest-framework 会出现 404 错误？

Question

我正在使用 django-rest-framework 并发布数据，但只有在我向其中添加图像时它才会给我 404 错误。没有图像，数据被发布，modelviewset 完美运行。

错误屏幕：

我的urls.py：

router = routers.SimpleRouter()
router.register(r'users', UserView, 'user')
router.register(r'teachers', TeacherView, 'teacher')
router.register(r'students', StudentView, 'student')
router.register(r'classes', ClassView, 'class')
router.register(r'subjects', SubjectView, 'subject')
router.register(r'institutes', InstituteView, 'institute')
router.register(r'enrolls', EnrolledView, 'enrolled')

router.register(r'quizes', QuizView, 'quizes')
router.register(r'questions', QuestionView, 'questions')
router.register(r'options', OptionView, 'options')
router.register(r'answers', AnswerView, 'answers')
router.register(r'attemptedQuestions',
                AttemptedQuestionView, 'attemmptedQuestion')
router.register(r'attemptedQuizes', AttemptedQuizesView, 'attemptedQuizes')

urlpatterns = router.urls

我的意见.py：

class QuizView(viewsets.ModelViewSet):
    serializer_class = QuizSerializer
    queryset = Quiz.objects.all()


class QuestionView(viewsets.ModelViewSet):
    serializer_class = QuestionSerializer
    queryset = Question.objects.all()


class OptionView(viewsets.ModelViewSet):
    serializer_class = OptionSerializer
    queryset = Option.objects.all()


class AnswerView(viewsets.ModelViewSet):
    serializer_class = AnswerSerializer
    queryset = Answer.objects.all()


class AttemptedQuizesView(viewsets.ModelViewSet):
    serializer_class = AttemptedQuizesSerializer
    queryset = attempted_quizes.objects.all()


class AttemptedQuestionView(viewsets.ModelViewSet):
    serializer_class = AttemptedQuestionSerializer
    queryset = attempted_question.objects.all()

编辑

堆栈跟踪： Stack Trace after the error screen

测验模型：

class Quiz(models.Model):
    Pin = models.AutoField(primary_key=True)
    Live = models.BooleanField(default=False)
    asset = models.FileField(upload_to='Quiz_assets',
                             default=None, null=True, blank=True)
    Title = models.CharField(max_length=255)
    Description = models.TextField()
    Start_time = models.DateTimeField()
    End_time = models.DateTimeField()
    created = models.DateTimeField(auto_now_add=True)
    Student = models.ManyToManyField(
        acModels.Student, through='attempted_quizes')
    Subject = models.ForeignKey(
        acModels.Subject, related_name="Quiz", on_delete=models.CASCADE)

另外，在我的本地机器上一切正常。

Answer 1

问题不在于您发布图片。您的网址末尾有 /1。这意味着 Django 将尝试获取 ID = 1 的测验。当您使用 PUT 方法时，Django 将尝试更新 ID = 1 的测验。当没有 ID = 1 的此类测验时，它会引发 404 错误。只需从 URL 中删除 /1 并再次发布即可。在 PUT 的情况下，附加 DB 中实际存在的 ID。它会起作用的。