离子导航控制器 - 检查页面是否已经加载

Question

Ok ..我注意到每次在导航控制器中推送新页面时，页面都会呈现页面状态始终是默认值。 让我们说用户去一个页面，修改一些数据，然后回到页面，他的更改都消失了。 有没有办法可以恢复页面，以防他已经在那里？ 这是我现在的想法，我想知道是否有更好的方法？

            //Check if page was not visited already
            console.log('Check if page was not already loaded.')
            let restoredFromHistory = false;
            this.navCtrl.getViews().forEach( view => { 
                if(view.name == 'CartPage'){
                    console.log('Page was found in the history.')
                    this.navCtrl.push(view);
                    restoredFromHistory = true;
                }
            })

            if(!restoredFromHistory){
                console.log('Page was not found in the history. Pushing a brand new.')
                this.navCtrl.push(CartPage)
            }