Я использую модуль djangorestframework для настройки API для обновления / чтения моих моделей. У меня есть эти модели ...
from django.db import models
from address.models import AddressField
from phonenumber_field.modelfields import PhoneNumberField
from address.models import State
from address.models import Country
class CoopTypeManager(models.Manager):
def get_by_natural_key(self, name):
return self.get_or_create(name=name)[0]
class CoopType(models.Model):
name = models.CharField(max_length=200, null=False)
objects = CoopTypeManager()
class Meta:
unique_together = ("name",)
class Coop(models.Model):
name = models.CharField(max_length=250, null=False)
type = models.ForeignKey(CoopType, on_delete=None)
address = AddressField(on_delete=models.CASCADE)
enabled = models.BooleanField(default=True, null=False)
phone = PhoneNumberField(null=True)
email = models.EmailField(null=True)
web_site = models.TextField()
, и у меня есть эти классы представления ...
class CoopList(APIView):
"""
List all coops, or create a new coop.
"""
def get(self, request, format=None):
coops = Coop.objects.all()
serializer = CoopSerializer(coops, many=True)
return Response(serializer.data)
def post(self, request, format=None):
serializer = CoopSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
class CoopDetail(APIView):
"""
Retrieve, update or delete a coop instance.
"""
def get_object(self, pk):
try:
return Coop.objects.get(pk=pk)
raise Http404
def get(self, request, pk, format=None):
coop = self.get_object(pk)
serializer = CoopSerializer(coop)
return Response(serializer.data)
def put(self, request, pk, format=None):
coop = self.get_object(pk)
serializer = CoopSerializer(coop, data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
def delete(self, request, pk, format=None):
coop = self.get_object(pk)
coop.delete()
return Response(status=status.HTTP_204_NO_CONTENT)
Проблема в том, что я хотел бы представить JSON вот так
{
"name": "1872",
"type": {
"name": "Coworking Space"
},
с намерением заключить, что для зависимой модели CoopType я либо создаю одну из существующих, либо использую модель до Coop. Тем не менее, прямо сейчас, отправка вышеупомянутых результатов в ответе 400 ...
{"type":["Incorrect type. Expected pk value, received dict."]
Как мне изменить мой класс представления, чтобы соответствовать тому, что я пытаюсь сделать?
Редактировать: сериализаторы ...
from rest_framework import serializers
from maps.models import Coop, CoopType
from address.models import Address, AddressField, Locality, State, Country
class CoopSerializer(serializers.ModelSerializer):
class Meta:
model = Coop
fields = ['id', 'name', 'type', 'address', 'enabled', 'phone', 'email', 'web_site']
def to_representation(self, instance):
rep = super().to_representation(instance)
rep['type'] = CoopTypeSerializer(instance.type).data
rep['address'] = AddressSerializer(instance.address).data
return rep
def create(self, validated_data):
"""
Create and return a new `Snippet` instance, given the validated data.
"""
return Coop.objects.create(**validated_data)
def update(self, instance, validated_data):
"""
Update and return an existing `Coop` instance, given the validated data.
"""
instance.name = validated_data.get('name', instance.name)
instance.type = validated_data.get('type', instance.type)
instance.address = validated_data.get('address', instance.address)
instance.enabled = validated_data.get('enabled', instance.enabled)
instance.phone = validated_data.get('phone', instance.phone)
instance.email = validated_data.get('email', instance.email)
instance.web_site = validated_data.get('web_site', instance.web_site)
instance.web_site = validated_data.get('web_site', instance.web_site)
instance.save()
return instance
class CoopTypeSerializer(serializers.ModelSerializer):
class Meta:
model = CoopType
fields = ['id', 'name']
def create(self, validated_data):
"""
Create and return a new `CoopType` instance, given the validated data.
"""
return CoopType.objects.create(**validated_data)
def update(self, instance, validated_data):
"""
Update and return an existing `CoopType` instance, given the validated data.
"""
instance.name = validated_data.get('name', instance.name)
instance.save()
return instance
Редактировать 2: Запрос скручивания ...
#!/bin/bash
read -d '' req << EOF
{
"name": "1872",
"type": {
"name": "Coworking Space"
},
"address": {
"id": 1,
"street_number": "222",
"route": "1212",
"raw": "222 W. Merchandise Mart Plaza, Suite 1212",
"formatted": "222 W. Merchandise Mart Plaza, Suite 1212",
"latitude": 41.88802611,
"longitude": -87.63612199,
"locality": {
"id": 29,
"name": "Chicago",
"postal_code": "60654",
"state": {
"id": 1,
"name": "IL",
"code": "",
"country": {
"id": 484,
"name": "United States",
"code": "US"
}
}
}
},
"enabled": true,
"phone": null,
"email": null,
"web_site": "http://www.1871.com/"
}
EOF
echo $req
curl -v --header "Content-type: application/json" --data "$req" --request POST "http://127.0.0.1/coops/"