Need help for filterFunction with special char

Question

Hi,
I'm doing a simple search/filter process to a dataGrid collection upon text inputs with filterFunction. What I'm facing problem is, in one of my column field (on which I'm filtering) has dot "." as a suffix and it doesn't includes in the search process.
Say I've a few values like - i_24., i_245., i_256.
Now with the present filterfunction when an user inputs i_24. it shows the other record as well - i_245., where the expected entry should only be i_24. (since i_245. is not i_24.5)
But it seems the search function is not taking the dot "." as a character in the search process, or at least when it is stays as suffix.
I thouht maybe some RegExp could overcome the problem, but I'm not good in that either.
Please, help.
Thank you.
Regards,
Santanu

Answer 1

aSuitableBoy,
Use the String's "indexOf" method.  (http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#indexOf()).
The syntax would be: "String(<YOUR_COLLECTION>.<FIELD_TO_FILTER_ON>).indexOf(<COMPARE_STRING_FROM_TEXT_INPUT>)
Here's a really small code snippet that I just wrote up, that works:
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="cc();">
          <mx:Script>
                    <![CDATA[
                         import mx.controls.Alert;
                         import mx.collections.ArrayCollection;
                         [Bindable] private var ac:ArrayCollection = new ArrayCollection();
                    private function cc():void
                                   var o:Object = new Object();
                                   o.field1 = "Value 1:";
                                   o.field2 = "i_24.";
                                   o.field3 = "Some other value...";
                                   ac.addItem(o);
                                   o = new Object();
                                   o.field1 = "Value 2:";
                                  o.field2 = "i_245.";
                                   o.field3 = "Some other value...";
                                   ac.addItem(o);
                                   o = new Object();
                                  o.field1 = "Value 3:";
                                   o.field2 = "i_256.";
                                   o.field3 = "Some other value...";
                                   ac.addItem(o);
                    private function filterFunc(o:Object):Boolean
                                   return String(o.field2).indexOf("i_24.") != -1;
                    ]]>
          </mx:Script>
          <mx:HBox width="100%" height="100%">
                         <mx:DataGrid id="dg" height="100%" width="100%" dataProvider="{ac}">
                                        <mx:columns>
                                                       <mx:DataGridColumn headerText="Column 1" dataField="field1" />
                                                       <mx:DataGridColumn headerText="Column 2" dataField="field2" />
                                                       <mx:DataGridColumn headerText="Column 3" dataField="field3" />
                                        </mx:columns>
                         </mx:DataGrid>
                         <mx:Button id="b1" label="Filter" click="{ac.filterFunction = filterFunc; ac.refresh();}" />
          </mx:HBox>
</mx:Application>