django的url采用正则表达式进行配置,虽然强大却也广为诟病。反对者们认为django的url配置过于繁琐,且不支持默认的路由功能。
我倒觉得还好,只是如果觉得不爽,为什么不自己小小的hack一下,反正也就几行代码的事。
在这个背景下,我整了这个url_helper,利用url_helper可以简化配置和实现url的默认路由。所谓的url_helper其实就只有url_helper.py一个文件,使用的时候只想要import就可以。
url_helper的具体用法请参考具体的例子:
url_helper下载/范例
下面对使用方法做个简单的说明。
url的默认路由
from url_helper import execute, url_ import views urlpatterns += patterns('', url(r'^(?P<urls>.*)', execute, {'views': views}), )
在urls.py里增加如下配置,其中views为需要进行路由的views模块。url的规则为 /action/param1/param2/…/ 。
例如:
#/edit/4/ def edit(request, n="id"): html = """ edit object: %s""" % n return HttpResponse(html)
在没有指定action的时候默认使用的action为index。
提供函数url_简化url配置
仿照ROR的做法,参数用”:”标识。
例如:
#url_(r'/space/:username/:tag/', views.url_), #/space/vicalloy/just/ def url_(request, username, tag): html = """ username: %s <br/> tag: %s""" % (username, tag) return HttpResponse(html)
url_helper的完整代码
就如前面说的,代码非常少。不过实际应用的话,应当还需要做一些扩展。
#!/usr/bin/env python # -*- coding: UTF-8 -*- from django import http from django.conf.urls.defaults import url import re def execute(request, urls, views): """ urls [methodName/]param1/param2/.../ methodName default index """ def get_method(views, methodName): try: return getattr(views, methodName) except Exception, e: return None method = None params = [e for e in urls.split("/") if e] params.reverse() if params: method = get_method(views, params.pop()) if not method: method = get_method(views, 'index') if not method: raise http.Http404('The requested admin page does not exist.') return method(request, *params) def url_(*args,**dic): regex = args[0] if regex[0] == "/": regex = regex[1:] regex = '^' + regex regex = regex + '$' regex = re.sub(":[^/]+", lambda matchobj: "(?P<%s>[^/]+)" % matchobj.group(0)[1:], regex) return url(regex, *args[1:], **dic)

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