How to take two path variable in Twisted framework? - url

Question

I would like to have two path variables. The url pattern looks like this:
http://<host>:<port>/<path_var_1>/<path_var_2>
where path_var_1 & path_var_2 are dynamic. I can take one as instructed here but how can I get two or more?

Answer 1

One idiomatic way to consume multiple path segments with Twisted Web's resource abstraction (upon which the txThings resource abstraction appears to be built) is to have more than one resource. Resources corresponding to earlier parts of the path gather up state and pass it along to resources corresponding to later parts of the path.
For example
from twisted.web.resource import Resource
class Root(Resource):
def getChild(self, name, request):
return FirstSegment(name)
class FirstSegment(Resource):
def __init__(self, first):
self.first = first
Resource.__init__(self)
def getChild(self, name, request):
return SecondSegment(self.first, name)
class SecondSegment(Resource):
def __init__(self, first, second):
self.first = first
self.second = second
Resource.__init__(self)
def render_GET(self, request):
return "Handling {first}/{second}".format(
first=self.first,
second=self.second,
)
root = Root()
site = Site(root)
...
Another option is to use "leaf" resources which stop traversal even if there are more path segments in the request:
from twisted.web.resource import Resource
class HandleItAll(Resource):
isLeaf = True
def render_GET(self, request):
return "Handling {path}".format(path="/".join(request.postpath))
root = HandleItAll()
site = Site(root)
...