CODEWITHSUNDEEP
jsondjangodjango-rest-framework
Stupid.Fat.Cat
Stupid.Fat.Cat

Reputation: 11295

Django RestFramework returning a precomputed json

Currently I have this:

class MySerializer(serializers.ModelSerializer):

    class Meta:
        model = MyModel
        fields = (
            'id', 'f0', 'f1', 'f2')

And it returns something like this:

{
    "count": 6242,
    "previous": null,
    "total_pages": 209,
    "results": [
        {
            "id": 63915,
            "f0": "Some stuff"
            .....
         },
        {
            "id": 63916,
            "f0": "Some other stuff"
            .....
         }....            

     ]
}

And this is good, but I noticed that serializing the data is actually quite expensive to do on the fly, so I would like to precompute it. So far I've managed to precompute it and store it in a jsonfield for my model, the problem is my API is now returning {'json_repersentation':{myold_response}}

class MySerializer(serializers.ModelSerializer):

    class Meta:
        model = MyModel
        fields = ('json_representation',)

My question is, is it possible to change it so that it simply returns the json contained within json_representation field without the "overhead" of {'json_representation':{id:0, f0:label...}} and instead just simply {id:0, f0:label...}

Upvotes: 1

Views: 58

Answers (1)

Gabriel Muj
Gabriel Muj

Reputation: 3805

You can override the serializer to_representation method:

def to_representation(self, instance):
    data = super(MySerializer, self).to_representation(instance)
    return data['json_representation']

Upvotes: 1

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