我有这个:
class GenericCharacterFieldMixin():
attributes = serializers.SerializerMethodField('character_attribute')
skills = serializers.SerializerMethodField('character_skill')
def character_attribute(self, obj):
character_attribute_fields = {}
character_attribute_fields['mental'] = {str(trait_item.get()): trait_item.get().current_value
for trait_item in obj.mental_attributes}
character_attribute_fields['physical'] = {str(trait_item.get()): trait_item.get().current_value
for trait_item in obj.physical_attributes}
character_attribute_fields['social'] = {str(trait_item.get()): trait_item.get().current_value
for trait_item in obj.social_attributes}
return character_attribute_fields
def character_skill(self, obj):
character_skill_fields = {}
character_skill_fields['mental'] = {str(trait_item.get()): trait_item.get().current_value
for trait_item in obj.mental_skills}
character_skill_fields['physical'] = {str(trait_item.get()): trait_item.get().current_value
for trait_item in obj.physical_skills}
character_skill_fields['social'] = {str(trait_item.get()): trait_item.get().current_value
for trait_item in obj.social_skills}
return character_skill_fields
class MageSerializer(GenericCharacterFieldMixin, serializers.ModelSerializer):
player = serializers.ReadOnlyField(source='player.username')
arcana = serializers.SerializerMethodField()
def get_arcana(self, obj):
if obj:
return {str(arcana): arcana.current_value for arcana in obj.linked_arcana.all()}
class Meta:
model = Mage
fields = ('id', 'player', 'name', 'sub_race', 'faction', 'is_published',
'power_level', 'energy_trait', 'virtue', 'vice', 'morality', 'size',
'arcana', 'attributes', 'skills')
depth = 1
GenericCharacterFieldMixin
是字符字段的混合体,这些字符是通用的,即所有类型的字符都是通用的。在
我希望我的法师序列化程序有这些'混合'而不是c/p然后在所有类型的字符(法师是一种字符类型)希望这将增加我的网络应用程序干燥。在
问题出在车型上我有这个:
^{pr2}$这意味着我得到了这个错误:
TypeError at /characters/api/mages
<django.contrib.contenttypes.fields.create_generic_related_manager.<locals>.GenericRelatedObjectManager object at 0x00000000051CBD30> is not JSON serializable
Django Rest Framework认为我想序列化我的泛型关系。
如果我重命名模型中的字段(s/attributes/foos/g
,s/skills/bars/g
),那么我得到一个不同的(不太清楚?)错误:
ImproperlyConfigured at /characters/api/mages
Field name `attributes` is not valid for model `ModelBase`.
如何在不混淆DRF的情况下将这些方法和字段拉入mixin?在
{cd1>}集:
这是解决方案recommended by DRF's authors。在
前面的答案中建议的解决方案是有问题的:
_declared_fields
中。这种黑客攻击可能在框架的后续版本中不起作用。在GenericCharacterFieldMixin
对于一个不是mixin而是序列化器的类来说是非常不幸的!)。这是有问题的,因为它将完整的Serializer
类引入多重继承,请参见DRF issue中的示例,以说明这是一个坏主意。在我也有同样的问题,我的谷歌搜索把我带到了这里。我设法解决了。 因为您在serialiser中包含属性和技能字段,所以需要为其提供序列化方法。在
这对我有用
解决办法很简单,就是改变
到
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