Selecting grid row based on column name and value with Page Object

arraygrid.js

http://examples.sencha.com/extjs/6.5.0/examples/kitchensink/?classic#array-grid

pageobject.js

var PO = {
    grid: function () {
        return ST.grid('grid');
    },
    selectByColumnText: function (text, value) {
        return this.grid()
            .execute(function (cmp) {
                var columns = cmp.getVisibleColumns(),
                    dataIndex = null, 
                    column;

                for (var i=0; i<columns.length; i++) {
                    column = columns[i];
                    // here "text" is the argument for selectByColumnText()
                    if (column.text === text) {
                        dataIndex = column.dataIndex;
                        break;
                    }
                }

                return dataIndex;
            })
            .and(function () {
                var future = this.future,
                    dataIndex = future.data.executeResult;
                // here "value" is the argument for selectByColumnText()
                future.selectWith(dataIndex, value);
            });
    } 
};

spec.js

it('should select row from column "text" and value', function () {
    PO.selectByColumnText('Company', 'Twitterbeat');
});