[DRF]PrimaryKeyRelatedFieldを高速化するスニペット - Qiita

def to_internal_value(self, data): if isinstance(data, str) or not hasattr(data, '__iter__'): self.fail('not_a_list', input_type=type(data).__name__) if not self.allow_empty and len(data) == 0: self.fail('empty') return [ self.child_relation.to_internal_value(item) for item in data ] from rest_framework import serializers from rest_framework.relations import MANY_RELATION_KWARGS, ManyRelatedField