Django URL Patterns
In Django, each view needs to be mapped to a corresponding URL pattern. This is done via a Python module called URLConf(URL configuration). Every URLConf module must contain a variable urlpatterns which is a set of URL patterns to be matched against the requested URL. These patterns will be checked in sequence until the first match is found. Then the view corresponding to the first match is invoked. If no URL pattern matches, Django invokes an appropriate error handling view.
Now if we see our project we have created an app called gfg_site, the Python module to be used as URLConf is the value of ROOT_URLCONF in gfg_site/settings.py. By default this is set to ‘gfg_site.urls’. Every URLConf module must contain a variable urlpatterns which is a set of URL patterns to be matched against the requested URL. These patterns will be checked in sequence until the first match is found. Then the view corresponding to the first match is invoked. If no URL pattern matches, Django invokes an appropriate error handling view.
Here’s a sample code for post/urls.py:
Python3
from django.urls import pathfrom . import viewsurlpatterns = [ path('', views.home, name='home'),] |
Including other URLConf modules
It is a good practice to have a URLConf module for every app in Django. This module needs to be included in the root URLConf module as follows:
Python3
from django.contrib import adminfrom django.urls import path, includeurlpatterns = [ path('admin/', admin.site.urls), path('', include('post.urls'))] |
Now if head towards http://127.0.0.1:8000/ then our site will be –
In the above example, the include statement will look into the URLpatterns list in the gfg_site_app/urls.py And then it will look into all the paths defined in the url.py file and will call the respective views function.
Getting started with Django
Python Django is a web framework that is used to create web applications very efficiently and quickly. Django is called a battery included framework because it contains a lot of in-built features such as Django Admin Interface, default database – SQLite3, etc. Django provides various ready-made components such as a way to handle user authentication, a management panel for your website, forms, a way to upload files, etc.
In this article, we will learn Django by creating a basic blogging web application.