the deal is basically that if you return a dict, web2py is compelled to
pass it to the corresponding view, which in turns in most of cases returns
html.
There's nothing wrong in returning a dict and then having a generic "json"
view that serializes that dict, and as a matter of fact, generic.json does
just that.
But if you return a string, you skip the "render the view" part.
On the parsing side: if you are looking for json, you should also return
the correct content-type if you want libraries (e.g. jQuery) to parse for
themselves. Either you force it with response.headers['Content-Type'] =
'application/json' or - my personal preference - you just ask for
/a/c/f.json instead of /a/c/f . the correct content type will be set by
web2py.
On Wednesday, January 20, 2016 at 10:20:22 PM UTC+1, Ian W. Scott wrote:
>
> Thanks. So to clarify, if I serialize the return value as json in the
> controller, then I can use it in javascript. It looks like I still have to
> parse the json on the javascript end (like $.parseJSON(mydata)) but it
> works like a charm.
>
> Ian
>
> On Wednesday, January 20, 2016 at 2:50:35 PM UTC-5, Niphlod wrote:
>>
>> from gluon.serializers import json
>>
>> def uh():
>> return json(blablabla)
>>
>> On Wednesday, January 20, 2016 at 8:45:55 PM UTC+1, Ian W. Scott wrote:
>>>
>>> I'm trying to use ajax calls to update the data for a chart dynamically.
>>> I don't want to make the chart a component that refreshes, I just want to
>>> get the controller return value back to the javascript in the view, so that
>>> I can update the chart via javascript. But web2py's ajax function seems to
>>> only (a) update a part of the page html, or (b) send page data to the
>>> controller for use in the back-end. There doesn't seem to be any way to get
>>> the controller's return value as a data object for the javascript to use.
>>>
>>> I've tried just using jquery's get() method like this:
>>>
>>> $.get(my_controller_url, function(data){
>>> console.log('got ajax data', data);
>>> });
>>>
>>> But if the controller's return value is a tuple there seems to be no
>>> data sent back, or at least I don't know how to access it from the 'data'
>>> variable in this example. If I make the controller a dictionary I get html
>>> back. But I don't want html. I just want the data.
>>>
>>> So how can I do this?
>>>
>>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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