app-engine: Request Data

1
votes

in my webapp2.RequestHandler method:

I want to find out which uri the requester want to get. for example, if the user wants to get "http://www.mysite.com/products/table" I want to get into a variable the value "table" (in this case)

when I print "self.request" I see all the values of RequestHandler class but I didn't managed to find out what is the right attribute in my case.

I'm sure the question is an easy-one for you, but I'm just a starter in python and app-engine framework.

1
pythongoogle-app-enginewebwebapp2

1 Answers

3
votes

Looked into how URLs should be handled, and wildcard URLs. Try this:

class ProductsHandler(webapp.RequestHandler):
    def get(self, resource):
        self.response.headers['Content-Type'] = 'text/plain'
        table = self.request.url
        self.response.out.write(table)
        self.response.out.write("\n")
        self.response.out.write(resource)

def main():
    application = webapp.WSGIApplication([
        ('/products/(.*)', ProductsHandler)
        ],
        debug=True)
    util.run_wsgi_app(application)

When I go to the URL http://localhost:8080/products/table, I get this result:

http://localhost:8080/products/table
table

The resource parameter of the get function is passed in automatically by the WSGIApplication url_mapping, because it is mapped to:

('/products/(.*)', ProductsHandler)

The (.*) is a wildcard, and gets passed in as a method parameter.

You could name the parameter in the get method anything you want instead of resource, such as table. It wouldn't make a lot of sense though, because if you pass in a url like http://localhost:8080/products/fish, it would no longer contain the word "table".

Earlier attempt (before edits):

Try something like this:

class MainHandler(webapp.RequestHandler):
    def get(self):
        table = self.request.url
        self.response.out.write(table)

For my test, I went to http://localhost:8080/, and it printed out:

http://localhost:8080/

See the docs for the Request class here.