I have a Serializer that looks like this:
我有一个如下所示的Serializer：
{
"id": 97,
"categories": [
23,
18
],
},
Where categories is a many-to-many on my model. I don't want a nested view just IDs so I used a PrimaryKeyRelatedField. So this works only if I have read_only=True which I don't want.
在我的模型中，类别是多对多的。我不希望嵌套视图只是ID，所以我使用了PrimaryKeyRelatedField。所以只有当我有read_only = True时我才不会这样做。
Relational field must provide a `queryset` argument, or set read_only=`True`.
I want to run each id and add them like this to the model....
我想运行每个id并将它们添加到模型中....
class ItemsSerializer(serializers.HyperlinkedModelSerializer):
categories = serializers.PrimaryKeyRelatedField(many=True)
def create(self, validated_data):
categories = validated_data.pop('categories')
instance = Items.objects.create(**validated_data)
for ID in categories:
add to model
cat_instance = category.objects.get(id=ID)
then add to cat_instance etc
How is this possible as PrimaryKeyRelatedField want me to use ready only.
这是怎么回事，因为PrimaryKeyRelatedField希望我只使用ready。
1 个解决方案
#1
1
You might try to subclass ModelSerializer instead of HyperlinkedModelSerializer and then supply the queryset argument for the PrimaryKeyRelatedField:
您可以尝试继承ModelSerializer而不是HyperlinkedModelSerializer，然后为PrimaryKeyRelatedField提供queryset参数：
categories = serializers.PrimaryKeyRelatedField(many=True,
queryset=Categories.objects.all())
#1
1
You might try to subclass ModelSerializer instead of HyperlinkedModelSerializer and then supply the queryset argument for the PrimaryKeyRelatedField:
您可以尝试继承ModelSerializer而不是HyperlinkedModelSerializer，然后为PrimaryKeyRelatedField提供queryset参数：
categories = serializers.PrimaryKeyRelatedField(many=True,
queryset=Categories.objects.all())