Question

嘿，我是django tastypie的新手，在数据重复的情况下我需要帮助我的待办任务和子任务都有这个模型。

class Todo(models.Model):
    title = models.CharField(max_length=250)
    description = models.TextField()
    creation_date = models.DateField(auto_now=True)
    due_date = models.DateField(blank=True, null=True)
    completed = models.BooleanField(default=False)
    parent_task = models.ForeignKey('self', related_name='subtask', 
    blank=True, null=True)

到目前为止，我已经附带了此资源。

class TodoResource(ModelResource):
    subtask = fields.ToManyField(
        "todos.api.SubtakResource", 'subtask',
        related_name='subtask', full=True,
        null=True, blank=True
    )

    class Meta:
        queryset = Todo.objects.all()
        resource_name = 'todo'
        authorization = Authorization()


class SubtakResource(ModelResource):
   parent = fields.ForeignKey(
        "todo.api.TodoResource", 'parent',
        use_in='detail', null=True, blank=True
   )

   class Meta:
       queryset = Todo.objects.all()

这是我得到的结果

 {
"meta": {
        "limit": 20,
        "next": null,
        "offset": 0,
        "previous": null,
        "total_count": 2
},
"objects": [{
    "completed": false,
    "creation_date": "2018-07-01",
    "description": "Have Fun muoy booy",
    "due_date": "2018-07-05",
    "id": 7,
    "resource_uri": "/api/todo/7/",
    "subtask": [{
        "completed": false,
        "creation_date": "2018-07-01",
        "description": "Bira",
        "due_date": "2018-07-06",
        "id": 8,
        "parent": null,
        "resource_uri": "",
        "title": "Drink beer"
    }],
    "title": "Have Fun"
},
{
    "completed": false,
    "creation_date": "2018-07-01",
    "description": "Bira",
    "due_date": "2018-07-06",
    "id": 8,
    "resource_uri": "/api/todo/8/",
    "subtask": [

    ],
    "title": "Drink beer"
}

] }

与父结果有关的最后结果来了两次，我该如何停止，请帮忙。另外resouce_uri字段即将到来null。

Answer 1

不知道Tastypie也支持自我参照关系。如果您假设我们在Note模型中添加了适当的自引用ForeignKey，则在Tastypie中实现类似的关系将如下所示：

# myapp/api/resources.py
from tastypie import fields
from tastypie.resources import ModelResource
from myapp.models import Note


class NoteResource(ModelResource):
    sub_notes = fields.ToManyField('self', 'notes')

    class Meta:
        queryset = Note.objects.all()

docs：http://django-tastypie.readthedocs.io/en/latest/resources.html#reverse-relationships

停止重复美味中的相关对象

1 个答案: