A summary of the methods for Django URL passing parameters _python

1 NO parameter condition

The configuration URL and its view are as follows:

(R ' ^hello/$ ', hello)
 
def hello (Request): Return
  httpresponse ("Hello World")

Access to Http://127.0.0.1:8000/hello, output as "Hello World"

2 passing a parameter
The configuration URL and its view are as follows, and a parameter is specified in the URL by a regular:

(R ' ^plist/(. +)/$ ', Helloparam)
 
def helloparam (request,param1): Return
  httpresponse ("The Param is:" + param1)

Access Http://127.0.0.1:8000/plist/china, the output is "the Param Is:china"

3 Passing multiple parameters
Referring to the second case, to pass two parameters as an example, configure the URL and its view as follows, and specify two parameters in the URL by specifying:

(R ' ^plist/p1 (\w+) P2 (. +)/$ ', helloparams)
 
def helloparams (request,param1,param2): Return
  HttpResponse (" P1 = "+ param1 +"; P2 = "+ param2)

Visit http://127.0.0.1:8000/plist/p1chinap22012/
Output is "P1 ="; P2 = 2012″

As you can see from here, the parameters of the view are matched and automatically assigned according to the regular form of the URL. While this allows for the passing of any number of parameters, it is not flexible enough, the URL looks messy, and because it is a regular match, in some cases error prone.

4 through the traditional "?" Passing parameters

For example, in Http://127.0.0.1:8000/plist/?p1=china&p2=2012,url '? ' After that, the passed arguments are passed, p1 and P2 two parameters.

By passing parameters in such a way, there is no problem caused by a regular match error. In Django, the parsing of such parameters is through the request. Obtained by the Get.get method.

The configuration URL and its view are as follows:

(R ' ^plist/$ ', helloParams1)
 
def helloparams (request):
  P1 = Request. Get.get (' p1 ')
  p2 = Request. Get.get (' P2 ') return
  httpresponse ("p1 =" + p1 +); P2 = "+ p2)

The output result is "P1 ="; P2 = 2012″