在DjangoRestFramework（DRF）中，沒有定義名稱'request'

Question

我正在製作獲取'android或iphone'用戶座標的api，並依賴於該座標，生成'post_list'（它意味着僅僅是post_list）。

使用DRF我做了我的查詢集（這個查詢集就是製作 'post_list'）這樣

views.py

from django.shortcuts import render 
from django.contrib.gis.geos import GEOSGeometry 
from django.contrib.gis.measure import D 
from .models import Post 
from django.http import HttpResponse 
from blog.models import Post, Comment 
from blog.serializers import PostSerializer, CommentSerializer 
import django_filters 
from rest_framework import filters, viewsets, generics 
from rest_framework.decorators import permission_classes 
from rest_framework.permissions import IsAuthenticated 


class PostViewSet(viewsets.ModelViewSet): 
    serializer_class = PostSerializer 
    permission_classes = [IsAuthenticated] 

    def get_queryset(self) : 
     #these are for getting user's coordinates. 
     lat = request.POST.get('user_lat', '13') 
     lon = request.POST.get('user_lon', '15') 
     userpoint = GEOSGeometry('POINT(' + lat + ' ' + lon + ')', srid=4326) 
     #these is for making my post_list 
     result = [] 
     i = 1 
     while i<50: 
      list_i = Post.objects.filter(point__distance_lte = (userpoint, D(km=i))) 
      result.extend(list_i) 
      if len(result) > 0: 
       result = result[:0] 
       break 
      i += 1 
     return self.result 

錯誤回溯

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/posts/ 

Django Version: 1.9.7 
Python Version: 3.5.2 
Installed Applications: 
['django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'django.contrib.gis', 
'django.contrib.sites', 
'debug_toolbar', 
'blog', 
'rest_framework', 
'rest_framework.authtoken',] 

Installed Middleware: 
['debug_toolbar.middleware.DebugToolbarMiddleware', 
'django.middleware.security.SecurityMiddleware', 
'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'] 



Traceback: 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/django/core/handlers/base.py" in get_response 
    149.      response = self.process_exception_by_middleware(e, request) 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/django/core/handlers/base.py" in get_response 
    147.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/django/views/decorators/csrf.py" in wrapped_view 
    58.   return view_func(*args, **kwargs) 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/rest_framework/viewsets.py" in view 
    87.    return self.dispatch(request, *args, **kwargs) 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/rest_framework/views.py" in dispatch 
    466.    response = self.handle_exception(exc) 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/rest_framework/views.py" in dispatch 
    463.    response = handler(request, *args, **kwargs) 

File "/home/keepair/djangogirls/myvenv/lib/python3.5/site-packages/rest_framework/mixins.py" in list 
    40.   queryset = self.filter_queryset(self.get_queryset()) 

File "/home/keepair/djangogirls/blog/views.py" in get_queryset 
    28.   lat = request.POST.get('user_lat', '13') 

Exception Type: NameError at /posts/ 
Exception Value: name 'request' is not defined 

我使這些代碼如下http://www.django-rest-framework.org/tutorial/6-viewsets-and-routers/#tutorial-6-viewsets-routers,http://www.django-rest-framework.org/api-guide/viewsets/#api-reference

但我覺得我沒在上面

請幫我充分理解的文檔，我應該做些什麼來解決這個問題？

Answer 1

lat = request.POST.get('user_lat', '13') 
lon = request.POST.get('user_lon', '15') 

應該是：

lat = self.request.POST.get('user_lat', '13') 
lon = self.request.POST.get('user_lon', '15')