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[英]How can I get a comment that corresponds to a post in django rest framework?
[英]I can not send a post to django rest framework
我创建了一个序列化器来发布结果,但是当我尝试使用邮递员时,它说值'enrollment_id'为null:
views.py
from rest_framework import generics
from .serializers import ResponseSerializer
class ResponseCreate(generics.CreateAPIView):
serializer_class = ResponseSerializer
serializers.py
class ResponseSerializer(serializers.ModelSerializer):
class Meta:
model = Response
fields = (
'enrollment_id',
'evaluation_id',
'question_id',
'question_component_id',
'user_id',
)
urls.py
from django.urls import path
from . import views
urlpatterns = [
path('', views.ResponseCreate.as_view()),
]
在邮递员的邮件正文中,我发送以下json:
{
"enrollment_id": 1,
"user_id": 2,
"question_component_id": 2,
"question_id": 1,
"evaluation_id": 1
}
错误邮递员:
IntegrityError at /response/
null value in column "enrollment_id" violates not-null constraint
DETAIL: Failing row contains (9, null, null, null, null, null).
视图
编辑:
模型回应:
class Response(models.Model):
user = models.ForeignKey(
User,
on_delete=models.CASCADE,
)
enrollment = models.ForeignKey(
Enrollment,
on_delete=models.CASCADE,
)
evaluation = models.ForeignKey(
Evaluation,
on_delete=models.CASCADE,
)
question = models.ForeignKey(
Question,
on_delete=models.CASCADE,
)
question_component = models.ForeignKey(
Question_Component,
on_delete=models.CASCADE,
)
您必须在网址格式中指明将允许使用的方法:
urlpatterns = [
path('', views.ResponseCreate.as_view({'get': 'list'})),
]
我可以在错误中看到您得到不允许使用`GET方法,这是因为您没有指示Django允许它。
试试这个视图:
from rest_framework import viewsets
from .serializers import ResponseSerializer
class ResponseCreate(viewsets.ModelViewSet):
queryset = models.Response.objects.all()
serializer_class = serializers.ResponseSerializer
ModelViewSet已经对al方法具有正确的响应,但是您必须在url模式中指出允许哪些方法。
编辑:您的序列化器无需在“模型”字段后添加“ _id”。 应该是这样的:
class ResponseSerializer(serializers.ModelSerializer):
class Meta:
model = Response
fields = (
'enrollment',
'evaluation',
'question',
'question_component',
'user',
)
现在,尝试通过邮递员对修改后的JSON进行编辑:
{
"enrollment": 1,
"user": 2,
"question_component": 2,
"question": 1,
"evaluation": 1
}
您需要定义一个queryset
在您的看法:
class ResponseCreate(generics.CreateAPIView):
queryset = Response.objects.all()
serializer_class = ResponseSerializer
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