On Tue, Sep 29, 2009 at 9:14 PM, Chris <crso...@googlemail.com> wrote:
>
> Hi
>
> We are creating a web service using Pyons that uses XML as the primary
> response content type. We have had some trouble when using abort()
> because it raises a webob.exc.WSGIHTTPException which has a HTML
> response as it's default body.
>
> The workaround we have implemented overrides _inspect_call() in
> base.py like this
>
> def _inspect_call(self, func):
> result = super(BaseController, self)._inspect_call(func)
> if hasattr(result,'empty_body'):
> result.empty_body = True
>
> return result
>
>
> Perhaps it should be the default to always set empty_body to True when
> a WSGIHTTPException is raised or when it is caught.
I've made a json_abort function to raise customized webob.exc in my lib/util.py:
import simplejson as json
def json_abort(status_code=None, detail="", headers=None, comment=None):
"""Same with pylons.controllers.util.abort but with json output."""
exc_class = status_map[status_code]
class JsonException(exc_class):
def __call__(self, environ, start_response):
self.content_type = 'text/javascript; charset=utf-8'
self.body = json.dumps(self.detail)
return Response.__call__(self, environ, start_response)
exc = JsonException(detail=detail, headers=headers, comment=comment)
log.debug("Aborting request with JSON response, status: %s,
detail: %r, headers: %r, "
"comment: %r", status_code, detail, headers, comment)
request.environ['pylons.status_code_redirect'] = True # skip err doc
raise exc.exception
so that, I can just call json_abort(404, {'reason': "resource not
found"}) in my controllers and users will receive a 404 error response
with a json documenting the reason in it.
--
Qiangning Hong
http://www.douban.com/people/hongqn/
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