[英]Django-rest-framework serializer fails to save model instance
我正在使用DRF。 我的models.py:
class Farm(models.Model):
farmer = models.ForeignKey(User, verbose_name="Farmer of this farm")
name = models.CharField(max_length=15, blank=False, verbose_name="Farm name", help_text="Please give a single word name for your farm.")
address = models.TextField(help_text="Please provide the address without the postal code", blank=False,)
postal_code = models.CharField(max_length=5, blank=False, default='12043')
size = models.DecimalField(max_digits=9, decimal_places=6, blank=False, )
#To add user's full name in the admin interface for better readability
def get_farmer_full_name(self):
return self.farmer.get_full_name()
#Works like a verbose_name but for a method
get_farmer_full_name.short_description = 'Farmers full name'
我的serializers.py:
class FarmSerializer(serializers.ModelSerializer):
class Meta:
model = Farm
fields = ('farmer', 'name', 'address', 'postal_code', 'size')
def create(self, validated_data):
return Farm.objects.create(**validated_data)
def update(self, instance, validated_data):
instance.name = validated_data.get('name', instance.name)
instance.address = validated_data.get('address', instance.address)
instance.postal_code = validated_data.get('postal_code', instance.postal_code)
instance.size = validated_data.get('size', instance.size)
instance.save()
return instance
我的views.py:
@api_view(('POST',))
def addFarm(request):
data = JSONParser().parse(request)
farmer = Farm(farmer = request.user)
serializer = FarmSerializer(farmer, data=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)
當我點擊url(r'^farms/save/$', views.addFarm),
這個網址時,我想用請求中提供的參數保存一個新的Farm實例。 我正在使用Postman發送請求。
但是我得到{"farmer":["This field is required."],"name":["This field is required."],"address":["This field is required."],"size":["This field is required."]}
錯誤作為響應。
我的請求如下:
注意:第一個字段'農民'我不能作為參數發送,但我想我必須用request.user.id
提取它並將其專門傳遞,但我不確定。
我究竟做錯了什么? 怎么解決這個問題?
在views.py中更改此設置
data = {"farmer": request.user.id}
data.update(request.data)
serializer = FarmSerializer(data=data)
或者根據您的編輯
data = JSONParser().parse(request)
data.update({"farmer": request.user.id})
serializer = FarmSerializer(data=data)
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