Serialization
    Serialization
  
Model -> Serializer -> View -> URL -> Project URL
Basic config
class ClientSerializer(serializers.ModelSerializer):
    # practitioners = PractitionerSerializer(many=True, read_only=True)
    class Meta:
        model = Client
        fields = '__all__'Adding Custom Fields
class PractitionerSerializer(serializers.ModelSerializer):
    client_ids = serializers.PrimaryKeyRelatedField(many=True, read_only=True, source='clients')
    class Meta:
        model = Practitioner
        fields = '__all__'Adding Relations Fields
class QuestionnaireSerializer(serializers.ModelSerializer):
    questions = QuestionSerializer(many=True, read_only=True)
    class Meta:
        model = Questionnaire
        fields = '__all__'