serializers.py 文件源码

def validate(self, validated_data):
        ingredient_uuid = validated_data['ingredient']['uuid']
        ingredient = Ingredient.objects.get(uuid=ingredient_uuid)
        validated_data['ingredient'] = ingredient

        if 'measurement' in validated_data:
            measurement_details = validated_data.pop('measurement')
            # measurement_details = validated_data['measurement']
            measurement_uuid = measurement_details['uuid']

            try:
                measurement = Measurement.objects.get(uuid=measurement_uuid)
            except Vendor.DoesNotExist:
                raise ValidationError('Non-required Measurement UUID doesn\'t exist'.format(measurement_uuid))

            validated_data['measurement'] = measurement

        return validated_data