Django 2.0 Trying to Grab the primary key with regular Expressions but im getting 404

Question

This is my Code ..

urlpatterns =[
path('',views.School_Lview.as_view(),name='list'),
path('(?P<pk>\d+)/',views.School_Dview.as_view(),name='detail')
]

I am trying to get this template to work

{% for school in schools %}
<h2><li><a href="{{school.id}}"> {{school.name}}</a></li></h2>
{% endfor%}

I am trying to link a particular school (among other schools) detailview.. — AbrarWali, Apr 15 '18 at 15:31
It says app not defined..and i am using django2.0 so url() doesnt work so im using path .. https://stackoverflow.com/questions/47947673/is-it-better-to-use-path-or-url-in-urls-py-for-django-2-0 — AbrarWali, Apr 15 '18 at 15:36
it should work, you are doing any mistake, do you have registered your app in settings.py???? — Sagar, Apr 15 '18 at 15:40
@Sagar Please post this as an answer so it can be accepted and the question closed. — Zoey Hewll, May 12 '18 at 04:39

score 3 · Accepted Answer · answered Apr 15 '18 at 15:47

3

I Fixed it...I used re_path instead of path and it worked like a charm..

re_path('(?P<pk>\d+)/',views.School_Dview.as_view(),name='detail')

answered Apr 15 '18 at 15:47

AbrarWali

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score 2 · Answer 2 · answered May 02 '18 at 11:25

django2.0 don't support the use of regex in django.urls.path() else if you really want to write the regex in your urls i will advice you use django.urls.re_path() which is the new function for the old version django.conf.urls.url

difference between path() and re_path()

with path() your urls would be written as;

from urls import path
urlpatterns =[
   path('',views.School_Lview.as_view(),name='list'),
   path('<int:pk>/',views.School_Dview.as_view(),name='detail')
]

with re_path()

from urls import path
 urlpatterns =[
    re_path('',views.School_Lview.as_view(),name='list'),
    re_path('(?P<pk>\d+)/',views.School_Dview.as_view(),name='detail')
 ]

check the official documentation for more insight on urls routing in django2.0

score 1 · Answer 3 · answered Jan 15 '20 at 08:31

While the answers are correct I just wanted to point out that Django actually uses the regular expression [0-9]+ instead of \d+ for primary keys.

They both have the same effect but here you can see all the default converters and their regular expressions who are hidden behind the 'new' path syntax.

Django 2.0 Trying to Grab the primary key with regular Expressions but im getting 404

3 Answers3