CODEWITHSUNDEEP
djangodjango-rest-frameworkdjango-serializer
Domen Preložnik
Domen Preložnik

Reputation: 348

Change ModelSerializer field key with function

I have a simple Django Rest Framework ModelSerializer for a model that has a field "name". I want to serialize it so the name is the value and its cleaned name is the key in the following way:

"results": [
    {
        "mymodel1" : "My Model 1"
    },
    {
        "mymodel2" : "My Model 2"
    }]

I currently have:

class ModelSimpleSerializer(serializers.ModelSerializer):

  keyname = serializers.SerializerMethodField('get_model_keyname')
  class Meta:
    model = myModel
    fields = (
      'keyname',
    )
  def get_model_keyname(self,obj):
    keyname = obj.name
    keyname = keyname .lower()
    keyname = keyname .replace(" ", "")
    return keyname

which returns: 

"results": [
    {
        "keyname" : "mymodel1"
    },
    {
        "keyname" : "mymodel2"
    }]

Any ideas?

Thank you!

Upvotes: 0

Views: 1094

Answers (3)

Abdelrahman Moharram
Abdelrahman Moharram

Reputation: 1

Do this

def to_representation(self, instance):
        representation = dict()
        representation["My Model 1"] = instance.mymodel1

Upvotes: 0

Aneesh R S
Aneesh R S

Reputation: 3827

Try this

class ModelSimpleSerializer(serializers.Serializer):
    def to_representation(self, obj):
        keyname = obj.name.lower().replace(" ", "")
        return {
            keyname: obj.name,
        }

Note that this will be read only serializer. But It will meet your requirements

objects = myModel.objects.all()

ModelSimpleSerializer(objects.first()).data
# {"mymodel1" : "My Model 1"}

ModelSimpleSerializer(objects, many=True).data
# [{"mymodel1" : "My Model 1"}, {"mymodel2" : "My Model 2"}]

Upvotes: 1

Gaurav Ravindra Bole
Gaurav Ravindra Bole

Reputation: 144

can you try this 

class ModelSimpleSerializer(serializers.ModelSerializer):

      name = serializers.SerializerMethodField()
      class Meta:
        model = myModel
        fields = (
          'name',
        )
      def get_name(self,obj):
        keyname = obj.name
        keyname = keyname .lower()
        keyname = keyname .replace(" ", "")
        return keyname

Upvotes: 0

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