How to return custom JSON from model?

Question

I have a model with multiple fields but I only want to expose some or a combination of them. For example the model has opening_time=12:00 and closing_time=18:00 and I want to return the field opening_hours=[12:00, 18:00] to the JSON.

This is just an example, but I have also some other fields to combine into one in the return JSON. How can I do this? Is there a way to use a ModelSerializer?

an0o0nym · Accepted Answer · 2018-05-14 21:08:49Z

1

Read more abuot SerializerMethodField.

You could do something like:

class StoreSerializer(serializers.ModelSerializer):
    opening_hours = serializers.SerializerMethodField()

    class Meta:
        model = Store
        fields = ('opening_hours', )

    def get_opening_hours(self, store_instance):
        opening_time = self.format_time(store_instance.opening_time)
        closing_time = self.format_time(store_instance.closing_time)
        return [opening_time, closing_time]

    def format_time(self, dt):
        return dt.strftime('%H:%M')

answered May 14, 2018 at 21:08

an0o0nym

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1 Comment

epord Over a year ago

Thank you, It was just what I needed ! It's working now

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