Detailed introduction to using urls.py:URL dispatcher (routing configuration file) in Python

This article mainly introduces the relevant information of urls.py:URL dispatcher (routingconfiguration file) in Python. Friends who need it can refer to it. Next

urls.py:URL dispatcher (routing configuration file)

URL configuration (URLconf) is like the directory of the website supported by Django . Its essence is a mapping table between a URL pattern and the viewfunction to be called for that URL pattern. In this way, you tell Django to call this code for this URL and call that code for that URL. The loading of the url starts from the configuration file.

Two forms of urlpatterns

If there is no prefix, use the list (recommended method)

URL pattern

urlpatterns = [
  url(正则表达式, view函数, 参数, 别名, 前缀),
]

Parameter description:

1. ##Regular expression: Regular expression

2. view function: a callable

   object, usually a view function or a string specifying the view function path

3. Parameters: optional default parameters (dictionary form) to be passed to the view function

4. Alias: an optional name parameter

5. Prefix: Path prefix

URL parser

Usually a URL parser corresponds to a URL configuration module, which can contain multiple URL patterns. Multiple other URL splitters can also be included. Through this inclusion structure design, Django's hierarchical analysis of UR is realized.

The URL decomposer is the key to Django's decoupling of apps and projects. The URL configuration module, usually operated by the
include method, will eventually be dieted into a URL decomposer.

Examples of common URL writing methods regex

url(r'test/\d{2}/$', views.test) # test/66
url(r'test/(?P<id>\d{2})/$', views.test)
url(r'test2/(?P<id>\d{2})/(?P<key>\w+) /$', views.test)

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