Get selected record in ExtJS 4.2.1

gistfile1.js

getSelectedRecord: function() {
    var grid = this.getGrid(),
     	records = grid.getSelectionModel().getSelection(),
        record;

    if(records.length) {
        // get first record from selection
        record = records[0];

        // find selection record in store
        record = grid.getStore().getById(record.getId());

        if(record) return record;
    }

    return false;
}