Angularjs等ng-repeat渲染完后绑定执行事件

//有些方法需要在ng-repeat渲染完成后执行(没有渲染完成页面有些元素还没有，没法绑定一些事件) 
app.directive('repeatFinish', function ($timeout) {
            return {
                link: function (scope, element, attr) {
                    if (scope.$last === true) {
                        $timeout(function () {
                            //合并战区列
                            uniteTdCells('structured');
                            
                        });
                    }
                }
            }
        });

//引用上面的repeatFinish
<tr ng-repeat="item in companyList" repeat-finish></tr>