Django: How to serialize QuerySet into object instead of array?

Question

I want to serialize a QuerySet into a JSON object instead of JSON array.

For model Day, the serialized QuerySet should be an object with Day.date keys and serialized Days as values.

class DaySerializer(serializers.ModelSerializer):
    class Meta:
        model = Day
        exclude = []

This returns an array of serialized objects:

DaySerializer(Day.objects.all(),many=True).data

{'15.02.2005':{...},
 '16.02.2005':{...},
  ...
}

I'm curious if there is some DRF way to do that.

from where these dates are coming?

JPG
– JPG

2019-05-03 04:00:18 +00:00
Commented May 3, 2019 at 4:00 — JPG
– JPG, Commented May 3, 2019 at 4:00

Gokhan Sari · Accepted Answer · 2019-05-03 00:22:13Z

1

AFAIK there is not an out-of-the-box way of doing that, but you can override .to_representation() and .to_internal_value() methods of the serializer to achieve that.

These methods enable you to alter how both serialization and de-serialization is done.

See here for details.

answered May 3, 2019 at 0:22

Gokhan Sari

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3 Comments

JPG Over a year ago

I dont think this would help. Because to_representation() is only handling one object at a time.

Gokhan Sari Over a year ago

Did you try it? I suspect incoming instance would be a list of objects if many=True.

JPG Over a year ago

Yes.. The many=True magic is being carried out somewhere else.

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