I guess I'm just not getting it. The datagrid (id=dg2) has a dataProvider. Each column in the grid is associated with one element in the dataProvider except for the renderer where the checkbox is. That is in a renderer because based on other fields it will be either enabled or not.
After a button is pressed, a routine is invoked that will loop through the dataProvider source to see if the checkbox were clicked. What I don't see is how to connect the renderer to the dataProvider checkbox field. Any reference to it causes a "can't do that to a null object" message. I added another field to the VO and in the renderer I can change the value of a Boolean such that it is true if the box were checked. This was done by adding a "change" event to the renderer. Since I could change the value of the field I don't see why I couldn't change the value of the checkbox field. From: [email protected] [mailto:[email protected]] On Behalf Of Alex Harui Sent: Friday, December 07, 2012 1:29 AM To: [email protected] Subject: Re: [flexcoders] Checkbox in grid Usually the checkbox changes something, either in the selection model or the data model, and you loop over that model. On 12/6/12 7:58 AM, "Davidson, Jerry" <[email protected]> wrote: I have a check box in an advancedatagrid along with other fields. They all show up as does the checkbox. I can check the box(es). There is a button that will then process the selected records. I start a loop on the grid, but I don't know where to go from there. The two things I want to do is 1) if the row is checked, add it to an array for further processing and 2) when coming into the array clear any checks still in there from the last time. The user will click on array1 and the data is used to populate array2 with details. Array2 also has the checkbox in an itemrenderer and below it a process button. You click the records you want processed then the button to build an array of selected records that are passed on for further processing. The array code looks like this: <cust:MyAdvancedDataGrid id="dg2" resizableColumns="true" height="100%" width="100%" editable="false" styleName="mainGrid" dataProvider="{model.userAARetrieveList}" headerStyleName="datagridHeaderStyles" selectionMode="singleCell" accessibilityName="A and A Report History List, DataGrid, use arrow keys to navigate between cells"> <cust:columns> <mx:AdvancedDataGridColumn id="select" headerText="Select" itemRenderer="gov.il.dhs.wvs.view.renderers.UserAA_Chck_Renderer" width="45"/> <mx:AdvancedDataGridColumn headerText="Week Ending" itemRenderer="gov.il.dhs.wvs.view.renderers.UserAA_WE_Renderer" width="85"/> more columns... The processing button code looks like this: // bottom grid clicked var dg2AC:ArrayCollection = new ArrayCollection(); for each (var obj:Object in dg2.dataProvider) { if (obj.select.selected) { dg2AC.addItem(obj); } } if (dg2AC.length == 0) return; (new UserAAInsertEvent(dg2AC as UserAAInsertVO)).dispatch(); I've spent the last hour reviewing blogs and such, but can't seem to find the right stuff. -- Alex Harui Flex SDK Team Adobe Systems, Inc. http://blogs.adobe.com/aharui
