Speed is really a non-issue here. Only if you had a HUGE response would
you notice a delay (other than ping time), and at that point you would
have usability problems anyway... I highly recommend using JSON with a
data structure like I did in Ajax.DoubleCombo if you aren't going to use
it in the first place (why not?). Like I said you will need to modify it
to support optgroup if you need support for those, I don't currently
have the time or need to do it myself. Creating that data-structure
server-side is VERY easy with any language that has a JSON library
(probably all).
Colin
Bjørge Solli wrote:
> Hmm. Is this "some browsers" every browser exept FF? Well, I can't live with
> that, even how much I like that browser. Is the best solution, except for
> using a different package, to simply use AJAX.Request with a
> onSuccess:function(transport){ fillSelect('dataset',
> transport.responseText); }
>
> and have something like this (pseudocode)
> function fillSelect(sel,str) {
> arr = str.split(';');
> for foo in arr {
> make option-object foo
> add option-object foo to select sel
> }
> }
>
> What do you guys think of this approach? It is putting a lot more work to the
> browser, but this should be so little that it will take fractions of a second
> on even an old computer. I'm interested in "best practices answers" too.
>
> Regards
> Bjørge
>
> On Monday 12 February 2007 19:16, Colin Mollenhour wrote:
>
>> Man have I got just what you need!
>> http://colin.mollenhour.com/doublecombo/index.html
>>
>> However, I don't think I accounted for optgroups.. I'm sure this could
>> be made to work though. Either way, you will have to use a DOM method
>> like mine, innerHTML for selects does not work on some browsers, period.
>>
>> Thanks,
>> Colin
>>
>> Bjørge Solli wrote:
>>
>>> Hi
>>>
>>> I'm currently learning how AJAX is working and found prototype.js
>>> interesting. But I have some issues that might be because of misusage:
>>>
>>> http://brasilia.nersc.no/test/PyTest/AJAX.html
>>> When I use this in Firefox2 it correctly fills the first select, using
>>> opera9 it is filled, but it just shows a list of "blank" options (no
>>> description), and in IE6 it doesn't get filled at all.
>>>
>>> I use python in the backend, and feeding it the input it replies
>>> correctly in all browsers:
>>> http://brasilia.nersc.no/test/PyTest/AJAX.py/getDatasetOptions
>>>
>>> This is my code:
>>> new Ajax.Updater({ success:'dataset', failure:'image' },
>>> 'AJAX.py/getDatasetOptions',
>>> { method:'get', parameters:$H({ random:Math.random() }),
>>> insertion:
>>> Insertion.Bottom }
>>> );
>>>
>>> Any help appreciated.
>>> Thanks!
>>>
>>> ###
>>> For those interested; this will be an open source visualisation tool for
>>> generating images of climate data using dods/THREDDS in the back. (that
>>> is why I use python in the back, it makes it possible to talk easily with
>>> the THREDDS server.)
>>>
>>
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