In my project, the relationship between Product and Group is ManytoOne.
When I tried to post a new product, it cannot work.
I'm sure there are more issues with this code and I will appreciate a detailed answer, because I am new to Django and Python. Thank you in advance.
models.py
class Group(models.Model):
productType = models.CharField(max_length=100)
intervalTime = models.IntegerField()
created = models.DateTimeField(auto_now_add=True)
id = models.UUIDField(default=uuid.uuid4, unique=True, primary_key=True,editable=False)
def __str__(self):
return self.productType
class Product(models.Model):
productName = models.CharField(max_length=255)
color = models.CharField(max_length=255)
group = models.ForeignKey(Group, on_delete=models.CASCADE)
created = models.DateTimeField(auto_now_add=True)
id = models.UUIDField(default=uuid.uuid4, unique=True, primary_key=True,editable=False)
def __str__(self):
return self.productName
serializers.py
class GroupSerializer(serializers.ModelSerializer):
class Meta:
model = Group
fields = ('id','productType','intervalTime')
class ProductSerializer(serializers.ModelSerializer):
group = GroupSerializer(many=False)
class Meta:
model = Product
fields = ('id','productName','color','group')
def create(self, validated_data):
group = validated_data.pop('group')
product = Product.objects.create(**validated_data)
for group_instance in group:
Group.objects.create(**group_instance, product=product)
return product
views.py
@api_view(['POST'])
def createProduct(request):
serializer = ProductSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
CodePudding user response:
First change serializers.py
:
class GroupSerializer(serializers.ModelSerializer):
class Meta:
model = Group
fields = ('id','productType','intervalTime')
class ProductInfoSerializer(serializers.ModelSerializer):
group = GroupSerializer(read_only=True)
class Meta:
model = Product
fields = ('id','productName','color','group')
class ProductCreationSerializer(serializers.ModelSerializer):
group = serializers.SlugRelatedField(slug_field='productType', queryset=Group.objects.all())
class Meta:
model = Product
fields = ('productName','color','group')
Then change views.py
:
from rest_framework import status
@api_view(['POST'])
def createProduct(request):
serializer = ProductCreationSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
instance = serializer.save()
return Response(status=status.HTTP_200_OK, data=ProductInfoSerializer(instance=instance).data)