Additional field while serializing django rest framework

Question

I am a newbie to django rest framework and have created a sample Employee model.

My models.py:

class Employees(models.Model         


        

Answer 1

SerializerMethodField works fine, and we can also store data in serializer object and let method get_field_name use that.

Example:

class MySerializer(serializers.ModelSerializer):
    statistic = serializers.SerializerMethodField()

    def __init__(self, instance=None, data=serializers.empty, statistic=None, **kwargs):
        super(MySerializer, self).__init__(instance=instance, data=data, **kwargs)
        self.statistic = statistic

    def get_statistic(self, obj):
        if self.statistic is None:
            return serializers.empty
        return self.statistic.get(obj.id, {})