What is the need of
routing ?
- - To make URL easy and better for SEO
- - To not show user specific files like .html and .py as request
- - To show details as per user request or action
Django uses Regular expressions for patterns (called perl
regular expression)
- $Contact ---must start with contact ie contactus
- Us^ --- end with us ie contactus
- \d – for digits
- \D – Non digit
- \w – Word character or alphanumeric (A-Z,0-9,_)
- \W – non word character
To Create you own range use square bracket
-
[a-z] lower case a to z
-
[az] specifically a or z
-
[a-zA-Z ] means lower case a through Z and upper A through Z ie all Letters of
alphabets
For Specific Choices
,Few Examples [Look more ] // Regular Expressions
- -\d For a single Digit
- -\d\d od \d{2} for two digits , brackets applies to item immediately proceeding it (asd\d){2}
- -\d{1,2} means minimum and maximum number of items
- - \d+ : + means Zero or more
- -\d* : * means zero or more
- -\d? ? means item is optional
Reference For Lookup:
# Example :
//in Url.py
url(r'^artists$',app.views.artists,name='home'),
url(r'^artists/(?P<name>[A-Za-z]+)$',app.views.artistdetails,name='artistdetails'),
//in
views.py
from django.http import HttpRequest,HttpResponse
def artists(request):
return HttpResponse('<html><head><title>Hello,
Django!</title></head><body><h1>Helllo
World</h1></body></html>');
def artistdetails(request,name):
output='<html><head><title>'+name
output+='</title></head><body><h1>'+ name
output+='</h1></body></html>'
return HttpResponse(output);
Start
Server for output to see instantenous changes
## !!
Correction ..^ to Start $ to end
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