[SOLVED] Adding Checkbox column in GridPanel via Ext Designer

[Nightwish]

I know this is possible to do using Ext.grid.CheckboxSelectionModel but I could not figure out how to do it using the Ext Designer. A brief explanation and/or example would be greatly appreciated.

[cwford]

Hello, Nightwish,

There may be a much better way to do this, but here's what I did that worked for me:

1. In Ext Designer I created a grid with a first column that I let default to what you get when you add a column
2. I removed the header and made the column width 20
3. Then after Exporting my design, I added the following lines of code to this js file that contains the initialization code for the component:
   

   // My grid was within a viewport component, the grid had an autoref value of 'docGrid'
   MyViewport = Ext.extend(MyViewportUi, {
       initComponent: function() {
           MyViewport.superclass.initComponent.call(this);
   
           // Create a new checkbox column
           var cm = new Ext.grid.CheckboxSelectionModel({
                // Put additional config values and listeners here
           });
   
           // Replace the grid selection model
           this.docGrid.selModel = cm;
   
           // Replace the current first column in the grid with the checkbox column
           this.docGrid.colModel.config[0] = cm;
       }
   });

I hope this helps, and if there's a better way to do this I'd be pleased to know.

Clyde

[jarrednicholls]

Yep, that's good Clyde. Here is another similar thread on the topic: http://www.extjs.com/forum/showthrea...blcass-configs

[Nightwish]

Thank you both, that works beautifully! Clyde, you should be writing help manuals - that was exceptionally well explained down to the autoRef id which as a novice I did not know about.

[cwford]

Thanks, Nightwish,

I'm really glad that worked for you.

Technical writing improves when your other job, like mine, is writing novels--psychological thrillers set along the Inside Passage! "Red Herring," "Precious Cargo," "Whiskey Gulf" the latest in the series.

Cheers,

Clyde

[jarrednicholls]

A programming novelist! That's one I've yet to hear...very cool :-)

http://www.clydeford.com/

[wemerson.januario]

Using this exemple works ok. But, if I select all rows and after select just one. the top checkbox keep checked as such as selection model were all selected. How do I fix this? Thanks

[jarrednicholls]

Hey Wemerson,

That may be a bug in the CheckboxSelectionModel. I will confirm or deny that for you in just a minute...

...testing...

...Yes this is a bug in the CheckboxSelectionModel. Can you post this as a bug report on the Ext Bugs forum? Thanks Wemerson!

[wemerson.januario]

posted! Thanks you.