django3.0 routing learning

A match, path

from django.contrib import admin
from django.urls import path
from index import views

urlpatterns = [
    path('articles/2003/', views.special_case_2003), 
    path('articles/<int:year>/', views.year_archive),
    path('articles/<int:year>/<int:month>/', views.month_archive),
    path('articles/<int:year>/<int:month>/<slug:slug>/', views.article_detail),

]

url.py

from django.http import HttpResponse
def special_case_2003(request):
    return HttpResponse("This is the special 2003")

def year_archive(request,year):
    return HttpResponse("This is year archive,Year number is %d" % year)

def month_archive(request,year,month):
    return HttpResponse("This is month archive,It's %d year %d month" %(year,month))

def article_detail(request,year,month,slug):
    return HttpResponse("This is month articl details,It's %d year, %d month,slug is %s" %(year,month,slug))

view.py

1. a / separated, acquiring parameters with angle brackets, can specify the type 
must be / otherwise not match any path behind the path 2. 
3. view passed to the view function request contains parameters are examples and the acquired path 
4 the sequence matches 

two converter 
what angle brackets in the following categories

• str, in addition to the matching / non-empty string, is not specified the default converter
• int, matching plastic
• slug, a short tag matches any ASCII letters or numbers, and the hyphen and the underscore
• uuid, this does not know Gansha
• path, comprising a matching / non-empty field

path('articles/<path:anythings>/',views.anythings)

def anythings(request,anythings):
    return HttpResponse("match nonthing above,your input is %s" % anythings)

Access http://127.0.0.1:8000/articles/mylove/hello/check/ 

响应match nonthing above,your input is mylove/hello/check

 

Third, custom converters

class FourDigitYearConverter:
    regex = '[0-9]{4}'

    def to_python(self, value):
        return int(value)

    def to_url(self, value):
        return '%04d' % value

converter

from django.urls import path,register_converter

register_converter(converter.FourDigitYearConverter,'yyyy')

View register_converter centralized file can see the default rule converter django provisions, regex is a regular expression to match the value of.

to_python back end of the preceding python program is transmitted or the type of value, the conversion can be done here special

 

Fourth, the regular expression converter

path---> re_path

Converter wording: (? P <name after matching parameters> Regular Expressions)

例如：re_path('articles/?P<year>[0-9]{4}/$',views.function)

 

五、include

The app similar to the url specified in the urlconf.