如何{"% url 'news_id' %"}
工作?我确实有一个 url 模式url(r'^((?:\w|-)+)/$', 'comments.views.home', name='news_id')
,但我仍然得到NoReverseMatch
.
它说
未找到带有参数“()”和关键字参数“{}”的“news_id”的反向。尝试了 1 种模式:['((?:\w|-)+)/$']
views.py
from django.shortcuts import render
from comments.models import User
from django.http import HttpResponseRedirect, HttpResponse
from django.template import RequestContext, loader, Context
from comments.models import News, User, Comment
from django.core.urlresolvers import resolve
def home(request, url_arg):
print "in Views.py", "and url_arg = ", url_arg
c = Comment.objects.all().filter(news__news_id=url_arg)
n = News.objects.all().get(news_id=url_arg)
cont = Context({'news': n.text, 'cts': c, 'news_id': n.news_id})
rc = RequestContext(request, cont)
t = loader.get_template('home.html')
print 'n = ', n
return HttpResponse(t.render(rc))
return render(request, 'home.html', context_dict, context_instance=RequestContext(request))
def submit(request):
print "request.path_info = ", request.path_info
print "in submit method and url = ", resolve(request.path_info).url_name, " & other try = ", request.resolver_match.url_name
news_id = request.POST.get('news_id')
user_id = request.POST.get('user_id')
comment_text = request.POST.get('comment')
print "news_id =", news_id, "user_id = ", user_id, "comment_text = ", comment_text
n = News(news_id=news_id)
n.save()
u = User(name='random',user_id=user_id)
u.save()
c = Comment(news=n, user=u, text=comment_text)
c.save()
return HttpResponse("Thanks!")
urls.py
from django.conf.urls import include, url
from django.contrib import admin
urlpatterns = [
# Examples:
url(r'^(?:\w|-)+/submit/$','comments.views.submit'),
url(r'^((?:\w|-)+)/$', 'comments.views.home', name='news_id'),
# url(r'^blog/', include('blog.urls')),
url(r'^admin/', include(admin.site.urls)),
]
home.html
<p>
News: {{news}}<br>
</p>
<form action="{% url news_id %}" method="post"> {% csrf_token %}
User Id: <input type="text" name="user_id"> <br>
Comment:<br>
<input type="text" name="comment" placeholder="Express your opinion ...">
<input type="submit" value="Submit"> <br>
{% for ct in cts %}
{{ ct.text }}<br>
{% endfor %}
</form>