On Aug 7, 2010, at 1:48 PM, Ionuț Arțăriși wrote:
> On 08/07/2010 01:56 PM, Diez B. Roggisch wrote:
>> On Aug 7, 2010, at 12:28 PM, Ionuț Arțăriși wrote:
>>
>>> Hello,
>>>
>>> I would like to be able to abandon a request however deeply nested within a
>>> function and return a json object.
>>>
>>> pylons.controllers.util.abort is the equivalent of what I would like, but
>>> it only returns HTML, even if the request was json.
>> I never used that function, but I'd simply create my own decorator that
>> exposes a passed function as json, and catches a defined exception to render
>> whatever json you want.
>>
>> Diez
>>
> I thought about that, too, but I wish there was a better way to do it than
> adding another decorator to all of my controller methods.
I don't see the point of that argument, as you need to add a decorator anyway.
Maybe you misunderstood, what I'm proposing is something like this:
@expose_json
def my_action(...)
So it's one decorator, not two.
Other than that, you can of course always wrap your app into a middleware which
can catch a defined exception & return whatever you want, based on that
exception.
Then there is validation, which you can use via standardized error_handlers. We
do something like this:
@expose("json")
@validate(..., error_handler=json_error_handler)
def my_action(...)
where json_error_handler looks like
def json_error_handler(self):
response.status = 413
return tmpl_context.form_errors
(out of my head, can't access the code right now)
I'm currently not really set up for working with TG2 (new machine), so I can't
comment on anything which works with the original abort. It might be worth
opening a feature-request ticket, but I'm unsure about the status of TG2.1
development right now (beta, feature freeez and whatnot)
Diez
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