Using CheckboxModel with default checked rows

[silve69]

Hello folks,

I'm using an Ext.selection.CheckboxModel in a grid, but I don't know how checked some rows by default.

var layers_store = new Ext.data.Store({
    autoLoad: false, 
    proxy: { 
        type: 'ajax', 
        url: 'modules/view.php', 
        reader: { 
            type: 'json', 
            root: 'results', 
            successProperty: 'success' 
        }, 
    },
    fields: [{name:'idlayer',type:'int'}, 'layer', {name:'checked',type:'int'}]
});


...
...
},{
    xtype: 'grid', 
    store: layers_store, 
    columnLines: true, 
    viewConfig: { stripeRows: true },
    selModel: Ext.create('Ext.selection.CheckboxModel'),
    columns: [{ header: 'Layers', dataIndex: 'layer' }]
},{
...

Received JSON:

[{"idlayer":"18","layer":"Towns","checked":"1"},{"idlayer":"19","layer":"Rivers","checked":"0"}]

For treepanel only is necessary a "checked" field, but with the CheckboxModel doesn't works.
Some suggestion??

Best regards,
Silver

[Gabanjo]

I don't think you can set it based on a property like you can for TreeStore. (I guess because it represents user selections not features of the data.)

If that's right you'll have to do it in your code somewhere, maybe like this:

   viewConfig: { stripeRows: true,
     listeners : {
          beforerefresh : function(view) {
                 var store = view.getStore();
                 var model = view.getSelectionModel();
                 var s = [];
                 store.queryBy(function(record) {
                       if (record.get('layer') === 'Rivers') {
                              s.push(record);
                       }
                });
                model.select(s);
           },
    }
 },

It would be a useful feature, so I hope I'm wrong.