无法使用 django rest 框架创建记录
Not able to create records using django rest framework
我正在尝试通过从 Visit model.but 中获取对象来在 Status 模型中创建记录，同时传递值以创建记录时出现错误，因为需要的归档数据很少。下面给出了我的代码以及正在传递的数据。
models.py
class Visit(models.Model):
name = models.CharField(max_length=200, name="name")
gender = models.CharField(choices=GENDER_CHOICE, max_length=1, name="gender")
mobile = models.CharField(max_length=18,default="", name="mobile")
email = models.CharField(max_length=256, null=True, blank=True, name="email")
address = models.TextField(null=True, blank=True, name="address")
visit_type = models.IntegerField(choices=VISIT_TYPE, name="visit_type")
visit_purpose = models.CharField(max_length=250, name="visit_purpose")
visitor_photo = models.FileField(upload_to="visitor/",null=True, blank=True)
id_photo = models.FileField(upload_to="id_card/",null=True, blank=True)
date_created = models.DateTimeField(default=timezone.now, editable=False)
def __str__(self):
return self.name
def save(self, *args, **kwargs):
if not self.id:
self.date_created = timezone.now()
super(Visit, self).save(*args, **kwargs)
class Status(models.Model):
visit = models.ForeignKey(Visit,on_delete=models.CASCADE)
description = models.CharField(name="description",max_length=200)
time = models.DateTimeField(null=True, blank=True)
aproved = models.BooleanField(default=False)
visit_complete = models.BooleanField(default=False)
exit_time = models.DateTimeField(null=True, blank=True)
date_created = models.DateTimeField(default=timezone.now, editable=False)
def __str__(self):
return self.visit.name
def save(self, *args, **kwargs):
if not self.id:
self.date_created = timezone.now()
super(Status, self).save(*args, **kwargs)
serializer.py
class VisitSerializers(serializers.ModelSerializer):
class Meta:
model = Visit
fields = ('name','gender','mobile','email','address','visit_type','visit_purpose','visitor_photo','id_photo')
class StatusSerializers(serializers.ModelSerializer):
visit = VisitSerializers(required=True)
class Meta:
model = Status
fields = ('visit', 'description','time','aproved','visit_complete','exit_time')
def create(self, validated_data):
visit_data = validated_data.pop('visit')
visit = VisitSerializers.create(VisitSerializers(), validated_data=visit_data)
status, created = StatusSerializers.objects.update_or_create(visit=visit,
description=validated_data.pop('description'))
return status
views.py
@api_view(['GET', 'POST'])
def create_visitor(request):
if request.method == 'GET':
visitor = Visit.objects.all()
serializer = VisitSerializers(visitor, many=True)
return Response(serializer.data)
elif request.method == 'POST':
serializer = VisitSerializers(data=request.data)
if serializer.is_valid(raise_exception=ValueError):
serializer.create(validated_data=request.data)
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.error_messages,
status=status.HTTP_400_BAD_REQUEST)
Data i posted
{
"visit":{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
},
"description":"this is testing!!!!!"
}
Error I got
{
"name": [
"This field is required."
],
"gender": [
"This field is required."
],
"visit_type": [
"This field is required."
],
"visit_purpose": [
"This field is required."
]
}
我遵循了这个 check this link 教程，但是当我使用该代码时它起作用了 perfectly.but 当我自定义它时它不起作用。
您正在将 create_visitor 方法与 VisitSerializers 一起使用。所以你发布的数据应该是;
{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
}
或者，如果您想将数据发送为；
{
"visit":{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
},
"description":"this is testing!!!!!"
}
然后将您的 POST 逻辑更改为；
@api_view(['GET', 'POST'])
def create_visitor(request):
if request.method == 'GET':
visitor = Visit.objects.all()
serializer = VisitSerializers(visitor, many=True)
return Response(serializer.data)
elif request.method == 'POST':
serializer = VisitSerializers(data=request.data.get('visit')) # <-- here get visit object
if serializer.is_valid(raise_exception=ValueError):
serializer.create(validated_data=request.data)
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.error_messages,
status=status.HTTP_400_BAD_REQUEST)
但您发送的数据中的其他字段（如 description）将不会被使用。您也应该更改代码。
这可以通过不同的方法解决。
您的 VisitSerializers 与 Visit 模型相关联，您的 VisitSerializers 应该期望。
fields = ('name','gender','mobile','email','address',
'visit_type','visit_purpose','visitor_photo','id_photo')
但是你只发送了两个字段
Visit 作为对象。它包含姓名、性别、手机 visit_type 和 visit_purposes。
description 作为文本
但是您的 VisitSerializers 不理解 visit 和 description 数据
1。如果您不想更改发送数据和接收数据的方式
因此，您可以采取的一种方法是从请求数据中提取必要的数据。
visit_serializer_data = request.data.get('visit')
你会得到
{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
}
然后通过visit_serializer_data
serializer = VisitSerializers(data=visit_serializer_data)
serializer.is_valid(raise_exception=True)
instance = serializer.save()
# handle you remaining logic here
....
...
2 如果您想更改传递的数据。
更改为以下。因为您的 VisitSerializer 数据需要它们。
{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
}
3 您正在传递数据 VisitSerializers 将其更改为 StatusSerializers(data=request.data)
您正在向 VisitSerializers 发送数据。查看您的 serializers、create_visitor 和 data。您应该在 POST 方法
中使用 StatusSerializers
我正在尝试通过从 Visit model.but 中获取对象来在 Status 模型中创建记录，同时传递值以创建记录时出现错误，因为需要的归档数据很少。下面给出了我的代码以及正在传递的数据。
models.py
class Visit(models.Model):
name = models.CharField(max_length=200, name="name")
gender = models.CharField(choices=GENDER_CHOICE, max_length=1, name="gender")
mobile = models.CharField(max_length=18,default="", name="mobile")
email = models.CharField(max_length=256, null=True, blank=True, name="email")
address = models.TextField(null=True, blank=True, name="address")
visit_type = models.IntegerField(choices=VISIT_TYPE, name="visit_type")
visit_purpose = models.CharField(max_length=250, name="visit_purpose")
visitor_photo = models.FileField(upload_to="visitor/",null=True, blank=True)
id_photo = models.FileField(upload_to="id_card/",null=True, blank=True)
date_created = models.DateTimeField(default=timezone.now, editable=False)
def __str__(self):
return self.name
def save(self, *args, **kwargs):
if not self.id:
self.date_created = timezone.now()
super(Visit, self).save(*args, **kwargs)
class Status(models.Model):
visit = models.ForeignKey(Visit,on_delete=models.CASCADE)
description = models.CharField(name="description",max_length=200)
time = models.DateTimeField(null=True, blank=True)
aproved = models.BooleanField(default=False)
visit_complete = models.BooleanField(default=False)
exit_time = models.DateTimeField(null=True, blank=True)
date_created = models.DateTimeField(default=timezone.now, editable=False)
def __str__(self):
return self.visit.name
def save(self, *args, **kwargs):
if not self.id:
self.date_created = timezone.now()
super(Status, self).save(*args, **kwargs)
serializer.py
class VisitSerializers(serializers.ModelSerializer):
class Meta:
model = Visit
fields = ('name','gender','mobile','email','address','visit_type','visit_purpose','visitor_photo','id_photo')
class StatusSerializers(serializers.ModelSerializer):
visit = VisitSerializers(required=True)
class Meta:
model = Status
fields = ('visit', 'description','time','aproved','visit_complete','exit_time')
def create(self, validated_data):
visit_data = validated_data.pop('visit')
visit = VisitSerializers.create(VisitSerializers(), validated_data=visit_data)
status, created = StatusSerializers.objects.update_or_create(visit=visit,
description=validated_data.pop('description'))
return status
views.py
@api_view(['GET', 'POST'])
def create_visitor(request):
if request.method == 'GET':
visitor = Visit.objects.all()
serializer = VisitSerializers(visitor, many=True)
return Response(serializer.data)
elif request.method == 'POST':
serializer = VisitSerializers(data=request.data)
if serializer.is_valid(raise_exception=ValueError):
serializer.create(validated_data=request.data)
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.error_messages,
status=status.HTTP_400_BAD_REQUEST)
Data i posted
{
"visit":{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
},
"description":"this is testing!!!!!"
}
Error I got
{
"name": [
"This field is required."
],
"gender": [
"This field is required."
],
"visit_type": [
"This field is required."
],
"visit_purpose": [
"This field is required."
]
}
我遵循了这个 check this link 教程，但是当我使用该代码时它起作用了 perfectly.but 当我自定义它时它不起作用。
您正在将 create_visitor 方法与 VisitSerializers 一起使用。所以你发布的数据应该是;
{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
}
或者，如果您想将数据发送为；
{
"visit":{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
},
"description":"this is testing!!!!!"
}
然后将您的 POST 逻辑更改为；
@api_view(['GET', 'POST'])
def create_visitor(request):
if request.method == 'GET':
visitor = Visit.objects.all()
serializer = VisitSerializers(visitor, many=True)
return Response(serializer.data)
elif request.method == 'POST':
serializer = VisitSerializers(data=request.data.get('visit')) # <-- here get visit object
if serializer.is_valid(raise_exception=ValueError):
serializer.create(validated_data=request.data)
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.error_messages,
status=status.HTTP_400_BAD_REQUEST)
但您发送的数据中的其他字段（如 description）将不会被使用。您也应该更改代码。
这可以通过不同的方法解决。
您的 VisitSerializers 与 Visit 模型相关联，您的 VisitSerializers 应该期望。
fields = ('name','gender','mobile','email','address',
'visit_type','visit_purpose','visitor_photo','id_photo')
但是你只发送了两个字段
Visit 作为对象。它包含姓名、性别、手机 visit_type 和 visit_purposes。
description 作为文本
但是您的 VisitSerializers 不理解 visit 和 description 数据
1。如果您不想更改发送数据和接收数据的方式
因此，您可以采取的一种方法是从请求数据中提取必要的数据。
visit_serializer_data = request.data.get('visit')
你会得到
{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
}
然后通过visit_serializer_data
serializer = VisitSerializers(data=visit_serializer_data)
serializer.is_valid(raise_exception=True)
instance = serializer.save()
# handle you remaining logic here
....
...
2 如果您想更改传递的数据。
更改为以下。因为您的 VisitSerializer 数据需要它们。
{
"name":"Alian",
"gender": "M",
"mobile":"97437000",
"visit_type":"1",
"visit_purpose":"vvvvvvv"
}
3 您正在传递数据 VisitSerializers 将其更改为 StatusSerializers(data=request.data)
您正在向 VisitSerializers 发送数据。查看您的 serializers、create_visitor 和 data。您应该在 POST 方法
StatusSerializers