Question

当我尝试调用POST方法时，它成功创建，但是在序列化程序中收到错误消息。当我在RESTful API中调用此方法时，应该怎么做才能获得成功？

Serializers.py：

def create(self, validated_data):
    if 'branches' in validated_data:
        branches_data = validated_data.pop('branches')
    if 'contacts' in validated_data:
        contacts_data = validated_data.pop('contacts')
    course = Course.objects.create(**validated_data)
    branches_list = []
    contacts_list = []
    print(contacts_data)
    print(branches_data)
    for branches_details in branches_data:
        branches_list.append(Branch.objects.create(
        course_id = course.id,
        **branches_details))
    for contacts_details in contacts_data:
        contacts_list.append(Contact.objects.create(
        course_id = course.id,
        **contacts_details))
    course.save()
    return course

Answer 1

我将假设branches_data和contacts_data是列表，因此，如果它们不存在，则应将它们声明为空列表。将运行以下代码：

def create(self, validated_data):

    branches_data = validated_data.pop('branches') if 'branches' in validated_data else []

    contacts_data = validated_data.pop('contacts') if 'contacts' in validated_data else []
    course = Course.objects.create(**validated_data)
    branches_list = []
    contacts_list = []
    print(contacts_data)
    print(branches_data)
    for branches_details in branches_data:
        branches_list.append(Branch.objects.create(
        course_id = course.id,
        **branches_details))
    for contacts_details in contacts_data:
        contacts_list.append(Contact.objects.create(
        course_id = course.id,
        **contacts_details))
    course.save()
    return course

分配前已引用局部变量“ contacts_data”

1 个答案: