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JSONP property for cherrypy

/ Published in: Python
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This is a @property to take care of jsonp stuff if you're using CherryPy.
In your Javascript, (you're using JQuery, right?) you can do
`
$.ajax({url:"localhost:8080/MyMethod", data:{'arg1':'foo'}, dataType:"jsonp", success:onMyMethodComplete});
`
and you will get back your JS datastructure without having to worry about the jsonp stuff yourself.

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  1. import simplejson
  2. def jsonp(func):
  3.     def foo(self, *args, **kwargs):
  4.         callback, _ = None, None
  5.         if 'callback' in kwargs and '_' in kwargs:
  6.             callback, _ = kwargs['callback'], kwargs['_']
  7.             del kwargs['callback'], kwargs['_']
  8.         ret = func(self, *args, **kwargs)
  9.         if callback is not None:
  10.             ret = '%s(%s)' % (callback, simplejson.dumps(ret))
  11.         return ret
  12.     return foo   
  13.  
  14. class Server(object):
  15.     @cherrypy.expose
  16.     @jsonp
  17.     def MyMethod(self, arg1):
  18.         #do something with arg1
  19.         return 'Works'

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