Author: webjunkie

by webjunkie on Nginx, Pylons, Python, uWSGI

Nginx, uWSGI, Pylons and the double slash problem

So there I am, deploying my first Pylons based app and thinking on which WSGI interface to go with. At the end I decided to go with uWSGI it has been proven to be a beast at handling requests even on high loads.
I setup my Nginx conf file, fired up uWSGI and found out that all of my links had a double slash i.e //home/new. I couldn’t belive it all my hard work for nothing. After a couple of searches I found out a reply on the Nginx mailing list from Igor Sysoev saying the solution is to add the qualified param to all the url() calls.

url(controller='account', action='new', qualified=True)

Indeed that solved the problem, for a second I thought my chance for testing the performance of uWSGI was gone.
 

 
by webjunkie on Facebook, Pylons, Python

Posting to a page wall with the Facebook SDK in Python

I’ve been developing in Python for quite a few months now and the need to develop a Facebook app has arrived.
So in my app I had the need to post content to a Fan Page wall and after a couple of tests I noticed the content being posted on the Fan Page on behalf of the Page owner and not the page itself.
To fix that I had to make the following changes inside the if condition where it checks for the arguments being posted:

if post_args is not None:
  if post_args['page_token']:
    post_args["access_token"] = post_args['page_token']#self.access_token
  else:
    post_args["access_token"] = self.access_token
else:
  args["access_token"] = self.access_token

So now I’m checking for an extra argument in this case page_token, if it’s set we use that token instead of the token that was used to initialize the Facebook Graph object.
With this changes in place we add the extra parameter page_token to our attachment and it shoud work as expected, with the content being posted on behalf of the page.

graph = facebook.GraphAPI(str(access_token))
attach = {
  "name": 'Hello world',
  "link": 'http://www.example.com',
  "caption": 'test post',
  "description": 'some test',
  "picture" : 'http://www.example.com/picture.jpg'
  "page_token" : str(page_token)
}
msg = 'New content posted'
post = graph.put_wall_post(message=msg, attachment=attach,profile_id=str(page_id))
  if post:
    return 'posted'