“list”对象没有“get”属性

Question

这是我使用Django rest框架创建的第一个网络服务。

这是我的配置文件的外观。

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework'
)

data.py:

from rest_framework.views import View
from rest_framework.response import Response
from rest_framework import status

ORDERS = [
    ['0', 'John', 'Apple'],
    ['1', 'John', 'Orange'],
    ['2', 'John', 'Lemon'],
    ['3', 'Jane', 'Apple'],
    ['4', 'Jane', 'Banana'],
    ['5', 'Bill', 'Pineapple'],
    ['6', 'Bob',  'Orange']
]

class Orders(View):
    """
    Provides access to all orders within the system.
    """

    def get(self, request):
        """
        Return a list of all orders.
        """
        return ORDERS

class CustomerOrders(View):
    """
    Provides access to all orders for a specific customer.
    """
    def get(self, request, customer):
        """
        Return a list of all orders for a specific customer.
        """
        customerOrders = []
        for order in ORDERS:
            if order[1] == customer:
                customerOrders.append(order)
        return customerOrders

class Order(View):
    """
    Provides access to individual orders.
    """
    def get(self, request, id):
        """
        Return a specific order given it's ID.
        """
        orderWithId = None
        for order in ORDERS:
            if order[0] == id:
                orderWithId = order
                break
        return orderWithId

而urls.py

from django.conf.urls import patterns, include, url
from data import *

urlpatterns = patterns('',
    url(r'^Data/Orders/$', Orders.as_view(), name='Orders')
)

错误：

   Environment:


Request Method: GET
Request URL: http://localhost:8000/Data/Orders/

Django Version: 1.8.5
Python Version: 2.7.10
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'rest_framework')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware')


Traceback:
File "C:\python27\lib\site-packages\django\core\handlers\base.py" in get_response
  223.                 response = middleware_method(request, response)
File "C:\python27\lib\site-packages\django\middleware\clickjacking.py" in process_response
  31.         if response.get('X-Frame-Options', None) is not None:

Exception Type: AttributeError at /Data/Orders/
Exception Value: 'list' object has no attribute 'get'

- Sajeetharan

Answer 1

您的视图的get方法必须返回一个HttpResponse对象（请参见使用基于类的视图的文档中的示例）。您目前正在返回一个列表，Django将不知道如何处理。

您还可能需要查看传递给HttpResponse的内容的文档。

- solarissmoke

---

你有阅读我提供的文档吗？里面有几个例子可以帮助你让它正常工作。 - solarissmoke

Answer 2

替换

return ORDERS

With

return HttpResponse(ORDERS)

你需要导入。

from django.http import HttpResponse

- Waqas Ali

Answer 3

由于您正在尝试使用Django Rest Framework构建Web服务。Response对象可以帮助以客户端请求的正确内容类型呈现，这与普通的HttpResponse不同。

在views.py中包含以下内容：

from rest_framework.response import Response

而不仅仅是

return ORDERS

做：

return Response(ORDERS)

- Anush Devendra