Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
177 views
in Technique[技术] by (71.8m points)

python - Django, name parameter in urlpatterns

I'm following a tutorial where my urlpatterns are:

urlpatterns = patterns('',
    url(r'^passwords/$', PasswordListView.as_view(), name='passwords_api_root'),
    url(r'^passwords/(?P<id>[0-9]+)$', PasswordInstanceView.as_view(), name='passwords_api_instance'),
    ...other urls here...,
)

The PasswordListView and PasswordInstanceView are supposed to be class based views. I could not figure out the meaning of the name parameter. Is it a default parameter passed to the view?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

No. It is just that django gives you the option to name your views in case you need to refer to them from your code, or your templates. This is useful and good practice because you avoid hardcoding urls on your code or inside your templates. Even if you change the actual url, you don't have to change anything else, since you will refer to them by name.

e.x with views:

from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse #this is deprecated in django 2.0+
from django.urls import reverse #use this for django 2.0+

def myview(request):
    passwords_url = reverse('passwords_api_root')  # this returns the string `/passwords/`
    return HttpResponseRedirect(passwords_url)

More here.

e.x. in templates

<p>Please go <a href="{% url 'passwords_api_root' %}">here</a></p>

More here.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...