python - Flask: URLs w/ Variable parameters

Question

I have a URL string I want to build in the following manner:

http://something.com/mainsite/key1/key2/key3/keyn

How would I generate something like this in my URL mapping where n is a variable number?

How would I get those keys?

Thanks

Answer 1

有两种方法可以做到这一点：

1. 只需使用path路由转换器：

   @app.route("/mainsite/<path:varargs>")
   def api(varargs=None):
       # for mainsite/key1/key2/key3/keyn
       # `varargs` is a string contain the above
       varargs = varargs.split("/")
       # And now it is a list of strings
   

2. 注册您自己的自定义路由转换器（有关详细信息，请参阅Werkzeug 的文档）：

   from werkzeug.routing import BaseConverter, ValidationError
   
   class PathVarArgsConverter(BaseConverter):
       """Convert the remaining path segments to a list"""
   
       def __init__(self, url_map):
           super(PathVarArgsConverter, self).__init__(url_map)
           self.regex = "(?:.*)"
   
       def to_python(self, value):
           return value.split(u"/")
   
       def to_url(self, value):
           return u"/".join(value)
   
   app.url_map.converters['varargs'] = PathVarArgsConverter
   

   然后您可以像这样使用它：

   @app.route("/mainsite/<varargs:args>")
   def api(args):
       # args here is the list of path segments