这是我在view.py
文件中添加的视图def add(request):
#se usaran las categorias para esto,se pasaran en locals()
categorias = Categoria.objects.all()
if request.method == "POST":
form = EnlaceForm(request.POST)
if form is valid():
form.save()
return HttpResponseRedirect("/")
else:
form = EnlaceForm()
template = "form.html"
return render_to_response(template,
context_instance = RequestContext(request,locals()))
这是我的文件urls.py,我在其中定义了“添加”网址
from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
# Examples:
#url(r'^$', 'app.views.hora_actual', name='hora_actual'),
url(r'^$', 'app.views.home', name='home'),
url(r'^minus/(\d+)$', 'app.views.minus', name='minus'),
url(r'^plus/(\d+)$', 'app.views.plus', name='plus'),
url(r'^categoria/(\d+)$', 'app.views.categoria', name='categoria'),
url(r'^add/$','app.views.add', name="add"),
# url(r'^proyecto2/', include('proyecto2.foo.urls')),
# Uncomment the admin/doc line below to enable admin documentation:
url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
# Uncomment the next line to enable the admin:
url(r'^admin/', include(admin.site.urls)),
)
在模板“form.html”中,令牌{%csrf_token%}和{{form.as_p}}检查表单是否有效
<section id="contenido">
<form method="post">
<div id="form">
{% csrf_token %}
{{form.as_p}}
<input type="submit">
</form>
</div>
</section>
但是,当我在浏览器127中调用url:0.0.1:8000 / add时,我得到此响应或输出:
ValueError at /add/
The view app.views.add didn't return an HttpResponse object.
Request Method: GET
Request URL: http://127.0.0.1:8000/add/
Django Version: 1.5.2
Exception Type: ValueError
Exception Value:
The view app.views.add didn't return an HttpResponse object.
Exception Location: C:\Python27\lib\site-packages\django\core\handlers\base.py in get_response, line 133
Python Executable: C:\Python27\python.exe
Python Version: 2.7.5
Python Path:
['C:\\django-projects\\tests\\proyecto2',
'C:\\Python27\\lib\\site-packages\\setuptools-0.9.6-py2.7.egg',
'C:\\Python27\\python27.zip',
'C:\\Python27\\DLLs',
'C:\\Python27\\lib',
'C:\\Python27\\lib\\plat-win',
'C:\\Python27\\lib\\lib-tk',
'C:\\Python27',
'C:\\Python27\\lib\\site-packages',
'C:\\Python27\\lib\\site-packages\\win32',
'C:\\Python27\\lib\\site-packages\\win32\\lib',
'C:\\Python27\\lib\\site-packages\\Pythonwin',
'C:\\Python27\\lib\\site-packages\\setuptools-0.6c11-py2.7.egg-info']
Server time: Thu, 12 Sep 2013 13:16:44 -0500
Traceback Switch to copy-and-paste view
C:\Python27\lib\site-packages\django\core\handlers\base.py in get_response
raise ValueError("The view %s.%s didn't return an HttpResponse object." % (callback.__module__, view_name)) ...
▶ Local vars
我知道所有基于函数的视图都会收到一个请求对象并返回一个HttpRespose对象,但是,HttpResponse和render_to_response对象之间有什么区别
从这个意义上说,我不是什么问题。谢谢你的帮助。
答案 0 :(得分:1)
您的render render_to_response
向右缩进一级。
默认情况下,视图呈现为GET
(request.method =='GET')。您只在return render_to_response(..)
部分中有POST
,因此当请求处理def add
时(第一次作为GET请求),没有返回HttpResponse
个对象。因此错误。
def add(request):
#se usaran las categorias para esto,se pasaran en locals()
categorias = Categoria.objects.all()
if request.method == "POST":
form = EnlaceForm(request.POST)
if form is valid():
form.save()
return HttpResponseRedirect("/")
else:
form = EnlaceForm()
template = "form.html"
return render_to_response(template,
context_instance = RequestContext(request,locals()))
请注意else:
块的缩进。