Question

所以我有一个名为index的视图，可能会也可能不会收到POST表单。我在这里看过这样的问题，并注意到大多数情况下它在视图中似乎是一个简单的逻辑错误，但是我写视图的方式，渲染调用是在所有条件之外，提取以便它应该永远被称为。观点是这样的：

from django.shortcuts import render, render_to_response, redirect
from django.template import RequestContext
from django.http import HttpResponse, Http404

import datetime

myUsers = ['A', 'B', 'C', 'D', 'E', 'Guest']

def index(request):
    # grab user if we've submitted login form from this page
    if request.method == 'POST':
        if 'myUser' in request.POST:
            request.session['myUser'] = request.POST['myUser']
    # make login default guest if not logged in
    elif not 'myUser' in request.session:
        request.session['myUser'] = 'Guest'

    return render(request, 'home/index.html', {'myUsers': myUsers})

我对解决方案非常不满，非常感谢帮助！

编辑：这也是追溯。

Environment:


Request Method: GET
Request URL: http://transcode50.com/home/

Django Version: 1.5.1
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'bootstrap_toolkit',
 'transcode',
 'transcode50',
 'home',
 'books')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  133.                     raise ValueError("The view %s.%s didn't return an HttpResponse object." % (callback.__module__, view_name))

Exception Type: ValueError at /home/
Exception Value: The view home.views.index didn't return an HttpResponse object.

Answer 1

每个彼得的答案是缩进了。它完全排列在我的文本编辑器中，但是移动标记所有行并重新绑定它们解决了这个问题。谢谢！

Answer 2

我认为你应该调整类似的东西：

if request.method == 'POST':
     for user in myUsers:
        if user in request.POST:
            request.session['myUser'] = request.POST['myUser']

request.POST是类似字典的对象，你的myUsers是一个列表。我不认为你可以在request.POST直接在python中做myUser。它是我的2美分。

查看不返回HttpResponse对象

2 个答案: