I've updated my local tg_flash routines to support pickling - my application
requires a dictionary with "class", "label", and "message" elements, for
example.
The change is 100% backwards compatible and adds a few bytes of overhead in
the general case of a simple string. Tests could be made to prevent even
that.
In controllers.py from the turbogears application directory:
>def flash(message):
> """Set a message to be displayed in the browser on next page display"""
> import pickle
> encoded = pickle.dumps(message)
> cherrypy.response.simpleCookie['tg_flash'] = encoded
> cherrypy.response.simpleCookie['tg_flash']['path'] = '/'
>
>def _get_flash():
> """Retrieve the flash message, if one is set. The message is cleared
> after retrieval."""
> request_cookie = cherrypy.request.simpleCookie
> response_cookie = cherrypy.response.simpleCookie
>
> if request_cookie.has_key("tg_flash"):
> message = request_cookie["tg_flash"].value
> if not response_cookie.has_key("tg_flash"):
> response_cookie["tg_flash"] = ""
> response_cookie["tg_flash"]['expires'] = 0
> response_cookie['tg_flash']['path'] = '/'
> elif response_cookie.has_key("tg_flash"):
> message = response_cookie["tg_flash"].value
> response_cookie.pop("tg_flash")
> else:
> message = None
> if message:
> import pickle
> message = pickle.loads(message)
> return message
My KID template is thus:
> <div py:if="tg_flash" id="flash" py:attrs="class=tg_flash['class']">
> <label py:content="tg_flash['label']" />
> <div py:content="tg_flash['message']" />
> </div>
I attempted to make a patch, but I borked it at the last moment and now have
no source reference... d'oh!
