在模板中{％url％}调用之后，Django 2添加URL参数

问题描述

无需修改urls.py，我想在模板中的{％url％}调用末尾手动添加URL参数。然后，在我看来，我想访问该查询参数的值。如果lang ='fr'，则打开法语模板；如果lang ='en'，则打开英语模板。这是我的代码： urls.py

urlpatterns = [
path('<int:topic_id>/',views.tutorials,name='tutorials'),path('<int:topic_id>/<int:tutorial_id>/',views.topic_tutorial,name='topic_tutorial'),path('<int:topic_id>/<int:tutorial_id>/<slug:slug>/',name='topic_tutorial_keywords'),

]

views.py

def topic_tutorial(request,topic_id,tutorial_id,slug=None):
"""Show specific Tutorial by topic"""
# NOTE: nothing is returned 
if (request.GET.get('lang')):
    lang = request.GET.get('lang')

topics = Topic.objects.all()
tutorial = Tutorial.objects.get(topic__id=topic_id,id=tutorial_id)

if request.path != tutorial.get_absolute_url():
    return redirect(tutorial,permanent=True)
# renaming topic to avoid spaces
name = tutorial.topic.text.lower()
if (' ' in name):
    name = "_".join( name.split() )

# renaming tutorial to avoid spaces
tut_name = tutorial.text.lower()
if (' ' in tut_name):
    tut_name = "_".join( tut_name.split() )

# lang always empty
if (lang == 'fr'):
    file = name + "-" + tut_name + "_fr.html"
else:    
    file = name + "-" + tut_name + ".html"

path = 'tutorials/' + file
context = {'tutorial': tutorial,'topics': topics,'file':file}
return render(request,path,context)

template.html

<div class="card-body">
          <h5 class="card-title">{{ tut.text }}</h5>
          <p class="card-text">{{ tut.summary }}</p>
          <p class="card-text">
            <a href="{% url 'topic_tutorial' tut.topic.id tut.id %}?lang=en">English</a> | 
            <a href="{% url 'topic_tutorial' tut.topic.id tut.id %}?lang=fr">french</a></p>
        </div>

给我的印象是，我不必在视图定义中添加另一个参数即可访问添加的查询参数“？lang = fr”。但是，什么都没有通过。

任何建议，我将不胜感激。

解决方法

尝试一下：

path('<int:topic_id>/<int:tutorial_id>',views.topic_tutorial,name='topic_tutorial'),

django django django-request