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I think more fundamentally speaking, you're not actually wanting to modify the callback, you're trying to modify the list, right? The callback doesn't care what it's sending (or shouldn't).<div><br></div><div>If you're trying to update the select element options from server data, you can easily handle that in the ajax success callback. If you're changing the options based on some client-side JavaScript, you could insert that function or use Seaside's JavaScript utilities to accomplish the same thing.</div><div><br></div><div>ie. (using jQuery)</div><div>var figureOutNewListOptions = function() {</div><div> // some function</div><div> // OR</div><div> $.get('http://www.mydata.com/getdata', function( data ) {</div><div> // clear current options</div><div> <span style="font-size: 10pt; ">$('selectField').html('');</span></div><div> ( var i = 0; i < data.records.length; i++ ) {<br> $('selectField').append('<option name='+data.records[i]+'value='+data.records[i]+'>'+<span style="font-size: 10pt; ">data.records[i]</span><span style="font-size: 10pt; ">+'</option>');</span></div><div> }</div><div> });</div><div>}</div><div>var updateList = function() {</div><div> var userInput = $('#userInputTextField').val();</div><div> // validate</div><div> figureOutNewListOptions();</div><div>}</div><div><br></div><div>Wow, that's a painful example but I hope it helps. Sorry for not writing it in Smalltalk lol.</div><div>Hope that helps... I haven't had a change to touch Seaside lately :( JavaScript has taken over my life. Suck.</div><div><br></div><div>RS</div><div><br><div><div id="SkyDrivePlaceholder"></div>> To: seaside@lists.squeakfoundation.org<br>> From: squeakman@gmail.com<br>> Date: Sun, 19 Aug 2012 12:53:16 -0400<br>> Subject: [Seaside] Re: How to change callback for html select on the fly<br>> <br>> On 19/08/2012 10:24 AM, Bob Arning wrote:<br>> > Why not just make the original callback sufficiently generic that it can<br>> > cope with the change?<br>> ><br>> > html text: 'Choose Amount'.<br>> > (html select)<br>> > id: #prices;<br>> > callback: [:v | self doWhateverIsImportantNowWith: v];<br>> > list: #(30 50 60).<br>> ><br>> > Cheers,<br>> > Bob<br>> ><br>> <br>> The problem with this proposed solution is that the list of choices #(30 <br>> 50 60) does not change on the fly. What I want is to change the list of <br>> choices, the dropdown list, on the fly.<br>> <br>> When the user exits the text field, depending on the contents of the <br>> text field, the choices are modified. In my code example, it switches <br>> from #(30 50 60) to #(15 25).<br>> <br>> I hope this further clarifies what I am trying to do.<br>> <br>> I appreciate your feedback.<br>> <br>> Thanks,<br>> <br>> Frank<br>> <br>> <br>> _______________________________________________<br>> seaside mailing list<br>> seaside@lists.squeakfoundation.org<br>> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside<br></div></div> </div></body>
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