callback on initSelection

Brad Lilly

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Jul 9, 2012, 10:09:04 AM7/9/12

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Hi There,

A bit stuck on using a callback on initSelection where I need to retrieve a single value back from an ajax call.

I added this patch here.

https://github.com/alanho/select2/commit/af1c39807611538db65886a227e9bf7227f4adba

All seems OK and I get a valid JSON response (below) however the <span> tag is empty.

{"results":[{"id":"4255","text":"Party Tour"}]}


I was working off the sample in the above url for a result.

My code sample is below. Any help would be appreciated.

$('#activitycats').select2({
        placeholder: 'Search for an activity',
        ajax: {
            url: "/ajax/categoriesactivities.php",
            dataType: 'json',
            quietMillis: 100,
            data: function (term, page) {
                return {
                    term: term, //search term
                    page_limit: 10 // page size
                };
            },
            results: function (data, page) {
                return { results: data.results };
            }

        },
        initSelection: function(element, callback) {
            return $.getJSON("/ajax/categoriesactivities.php?id=" + (element.val()), null, function(data) {
                if ($.isFunction(callback)) {
                    return data;
                }
            });
        }

    });

Igor Vaynberg

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Jul 9, 2012, 10:12:27 AM7/9/12

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you need to return just the array portion, no need for the "results" key.

-igor

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Brad Lilly

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Jul 9, 2012, 10:41:17 AM7/9/12

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Thanks Igor I tried that as below. Still no luck.

[{"id":"4255","text":"Party Tour"}]

Igor Vaynberg

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Jul 9, 2012, 10:51:24 AM7/9/12

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this part is also wrong:

if ($.isFunction(callback)) {
return data;
}

should instead be

callback(data);

-igor

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Brad Lilly

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Jul 9, 2012, 11:17:22 AM7/9/12

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Thanks Igor tried that as well and not working for me. Quite tired now and off for some sleep. But if you have any more ideas I would welcome them. A fresh start in the morning might give me results.

On Tuesday, 10 July 2012 00:09:04 UTC+10, Brad Lilly wrote:

Brad Lilly

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Jul 9, 2012, 6:41:39 PM7/9/12

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Thanks Igor a bit of sleep did the trick. I still had an array of values and after running firebug worked out the problem.
Needed it as below without []


{"id":"4252","text":"Abseiling"}

I did see some people asking for PHP examples of server side did you want some of these?

On Tuesday, 10 July 2012 00:09:04 UTC+10, Brad Lilly wrote:

Igor Vaynberg

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Jul 10, 2012, 12:50:44 AM7/10/12

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On Tue, Jul 10, 2012 at 1:41 AM, Brad Lilly <chickp...@gmail.com> wrote:
> Thanks Igor a bit of sleep did the trick. I still had an array of values and
> after running firebug worked out the problem.
> Needed it as below without []
> {"id":"4252","text":"Abseiling"}
>
> I did see some people asking for PHP examples of server side did you want
> some of these?

would be cool to have some on the wiki, yes.

thanks,
-igor

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> You received this message because you are subscribed to the Google Groups
> "select2" group.
> To view this discussion on the web visit

> https://groups.google.com/d/msg/select2/-/QT98I7rmQnoJ.

Brad Lilly

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Jul 11, 2012, 6:48:52 AM7/11/12

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Thanks Igor. This works for me... Hope it can help others.

On Tuesday, 10 July 2012 00:09:04 UTC+10, Brad Lilly wrote:

select2_sample.php

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