Ext.define('GeekFlicks.view.Movies', { extend: 'Ext.grid.Panel', id: "movies_editor", alias: 'widget.movieseditor', store: 'Movies', initComponent: function () { //note: store removed this.columns = [{ header: 'Title', dataIndex: 'title', flex: 1 }, { header: 'Year', dataIndex: 'year', flex: 1 }]; this.callParent(arguments); } });