/Python/Django/Django serializer method field read write

Django serializer method field read write

class ProjectSerializer(serializers.ModelSerializer):
    contract_price = WritableSerializerMethodField(deserializer_field=serializers.DecimalField(max_digits=12, decimal_places=2))

    def get_contract_price(self, project):
        return project.contract_price

    def set_contract_price(self, value):
        return value

Source: stackoverflow.com

Django serializer method field read write

class WritableSerializerMethodField(serializers.SerializerMethodField):
    def __init__(self, **kwargs):
        self.setter_method_name = kwargs.pop('setter_method_name', None)
        self.deserializer_field = kwargs.pop('deserializer_field')

        super().__init__(**kwargs)

        self.read_only = False

    def bind(self, field_name, parent):
        retval = super().bind(field_name, parent)
        if not self.setter_method_name:
            self.setter_method_name = f'set_{field_name}'

        return retval

    def get_default(self):
        default = super().get_default()

        return {
            self.field_name: default
        }

    def to_internal_value(self, data):
        value = self.deserializer_field.to_internal_value(data)
        method = getattr(self.parent, self.setter_method_name)
        return {self.field_name: self.deserializer_field.to_internal_value(method(value))}

Source: stackoverflow.com

Similar codes

0 vote249 views1 answer
Minimal requirements.txt django
Python Django
2 votes219 views3 answers
Django login required decorator
Python Django
0 vote246 views1 answer
Django import settings variables
Python Django
9 votes218 views2 answers
Django delete instance
Python Django
1 vote249 views1 answer
Django migrate fake zero
Python Django
25 votes299 views2 answers
Start new app in django
Python Django
0 vote238 views1 answer
Celery beat command for django celery beat
Python Django
0 vote251 views3 answers
Django forms I cannot save picture file
Python Django
0 vote187 views2 answers
Business logic code where located in django rest framework
Python Django
6 votes253 views4 answers
Django change password command line
Python Django