如何解决在 django rest 序列化程序中使用 django mptt 包时如何获取父节点名称?
我只使用此代码获取父 ID,但我需要父节点名称。是否可以获取父节点名称?
class Department(MPTTModel,NameStatusModelMixin):
desc = models.TextField(blank=True,null=True,default=None)
slug = models.SlugField(max_length=100,blank=True)
parent = TreeForeignKey('self',on_delete=models.CASCADE,blank=True,related_name='children')
related_positions = models.ManyToManyField('Position',related_name='departments')
class MPTTMeta:
order_insertion_by = ['id']
def __str__(self):
return self.name
class DepartmentDetailSerializer(ModelSerializer):
class Meta:
model = Department
fields = ('id','name','status','slug','desc','parent')
解决方法
最简单的方法是:
class ParentSerializer(ModelSerializer):
class Meta:
model = Department
fields = ('name')
class DepartmentDetailSerializer(ModelSerializer):
parent = ParentSerializer()
class Meta:
model = Department
fields = ('id','name','status','slug','desc','parent')
您还可以考虑使用 SerializerMethodField 或 recursive/self-referential serializer,具体取决于您的确切需求/您希望最终数据的样子...
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