Ext.grid.CheckboxSelectionModel

[boston-george]

Hy guys,

when i click into CheckBox of grid i receive thsi error in firebug:

this.grid is undefined

var r = Ext.isNumber(index) ? this.grid.store.getAt(index) : index;

this is my code:

function
 crtGridOrdCompletare(){

     var sm = new Ext.grid.CheckboxSelectionModel({ 
            checkOnly: true

      }); 

　
     Ext.getCmp(
'pnlAllCenter').add({

            xtype: 'editorgrid',
            flex: 1,
            id: 'grlOrdCompletare',
           columns: [
                         sm,
                    {
                        xtype: 'gridcolumn',
                        dataIndex: 'F15STAORD',
                        header: 'Stato<br>Ordine',
                        sortable: true,
                        width: 100,
                        editable: false,
                        align: 'center', 
                        id: 'clmF15STAORD'

                      },
                      {
                       xtype: 
'gridcolumn',
                       header: 'Tipologia<br>Ordine',
                       sortable: true,
                       width: 100,
                       align: 'center',
                       dataIndex: 'F15TIPORD',
                       editable: false,
                       id: 'clmF15TIPORD'

                      }
                   ],
//chiusura colonne


                   store : 
new Ext.data.JsonStore({
                                              storeId: 'strOrdCompletare',
                                              root: 'rootOrdCompletare',
                                              autoLoad: true,
                                              url: '/Project/public/ordini/strordcompletare',
                                              totalProperty: 'totalOrdCompletare',
                                              fields: [
                                              {
                                                name: 'F15STAORD'

                                               },
                                              {
                                                name: 
'F15TIPORD'

                                               }

                                              ]
                 }),

   });

   Ext.getCmp(
'pnlAllCenter').doLayout();
}

how can i solve it?
thanks

[Tim Toady]

Specify the sm property on your grid. sm: sm

[boston-george]

i've add

selModel: sm,

and now it's work done!
thanks a lot!!