Am 23.10.2010 01:45 schrieb [email protected]:
Also, I'm not entirely happy with the way I'm excluding the TG dict
keys in the render function - so if anyone wants to chip in a better
solution, I'd be extremely grateful ;)
Yes, that's really not nice. A somewhat better solution is requesting
the keys to be removed from tg, instead of using the hardcoded list.
Also, JSONP controllers should deliver a 'text/javascript' mime type
instead of the default 'text/html'.
> NOTE: the current implementation presupposes that you pass in the
> JSONP callback method in the URL parameter 'jsoncallback'. E.g.
> http://my.site.com/path/to/controller?jsoncallback=mycallback
In addition to that, you could abuse the template_name for defining a
default for the callback function on the server side, and add a fixed
default in case it is not set via template name or parameter.
Example: expose('jsonp:mycallbackmethod')
So my improved solution looks like this:
from tg import json_encode, response
from tg.render import _get_tg_vars
def render_jsonp(template_name, template_vars, **kwargs):
callback = (template_name
or kwargs.pop('callback', None) or 'callback')
for key in _get_tg_vars():
del template_vars[key]
response.headers['Content-Type'] = 'text/javascript'
return '%s(%s)' % (template_name, json_encode(template_vars))
from myapp.config.app_cfg import base_config
base_config.render_functions['jsonp'] = render_jsonp
base_config.mimetype_lookup = {'.jsonp': 'text/javascript'}
I've also added a http://trac.turbogears.org/ticket/2513 for this.
-- Christoph
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