Javascript 如何在无需在ionic中重新加载页面的情况下在modal Disclose上同步firebase数据？

我正在使用一个模式来获取表单值，这些值将保存在firebase中。我正在从firebase检索保存的数据，并将其显示在页面中。但是当我在表单提交时取消模式时，我的值没有得到更新。看起来每次我关闭模态时都必须重新加载构造函数。有没有更好的方法来更新数据而不必在modal onwilldisease上重新加载构造函数

我的主页组件，

    export class HomePage {
      items: any = []
      roomData:any;
      constructor(public navCtrl: NavController,public modal:ModalController,public navParams:NavParams,public auth:AuthProvider,public af:AngularFireModule) {
        this.roomData=auth.getRoomData();
        console.log('Rooms data from firebase',this.roomData)
        this.items.push(this.roomData)
        console.log(this.items);
      }
      addItem(){
        var modal = this.modal.create(AddRoomModalPage);
        modal.present();
        // modal.onWillDismiss(function(success,err){
        //   if(err){
        //     return console.log('thsk');      
        //   }else{

        //   }
        // })
      }

    }

export class AddRoomModalPage {
   public roomDetails:FormGroup;
  constructor(public navCtrl: NavController, public auth:AuthProvider,public navParams: NavParams,public formBuilder: FormBuilder,public viewCtrl:ViewController) {
    this.roomDetails = formBuilder.group({
    roomName: ['', Validators.required],
    idealFor:['',Validators.required],
    roomMates: ['', Validators.required],
    location: ['', Validators.required],
      reqID:[false,Validators.required]
}); 
  }

  ionViewDidLoad() {
    console.log('ionViewDidLoad AddRoomModalPage');
  }

  addRoom(){
    if(this.roomDetails.valid){
      console.log(this.roomDetails.value);
      this.auth.addNewRoom(this.roomDetails.value);
      this.viewCtrl.dismiss();
    }else{
      console.log("form invalid")
    }

  }

  closeModal(){
    this.viewCtrl.dismiss();
  }

我的模态组件，

    export class HomePage {
      items: any = []
      roomData:any;
      constructor(public navCtrl: NavController,public modal:ModalController,public navParams:NavParams,public auth:AuthProvider,public af:AngularFireModule) {
        this.roomData=auth.getRoomData();
        console.log('Rooms data from firebase',this.roomData)
        this.items.push(this.roomData)
        console.log(this.items);
      }
      addItem(){
        var modal = this.modal.create(AddRoomModalPage);
        modal.present();
        // modal.onWillDismiss(function(success,err){
        //   if(err){
        //     return console.log('thsk');      
        //   }else{

        //   }
        // })
      }

    }

export class AddRoomModalPage {
   public roomDetails:FormGroup;
  constructor(public navCtrl: NavController, public auth:AuthProvider,public navParams: NavParams,public formBuilder: FormBuilder,public viewCtrl:ViewController) {
    this.roomDetails = formBuilder.group({
    roomName: ['', Validators.required],
    idealFor:['',Validators.required],
    roomMates: ['', Validators.required],
    location: ['', Validators.required],
      reqID:[false,Validators.required]
}); 
  }

  ionViewDidLoad() {
    console.log('ionViewDidLoad AddRoomModalPage');
  }

  addRoom(){
    if(this.roomDetails.valid){
      console.log(this.roomDetails.value);
      this.auth.addNewRoom(this.roomDetails.value);
      this.viewCtrl.dismiss();
    }else{
      console.log("form invalid")
    }

  }

  closeModal(){
    this.viewCtrl.dismiss();
  }

---

任何帮助都将不胜感激。提前谢谢

您可以在模式中使用

ionViewWillLeave（）

，或者在

主页中使用
ionViewWillEnter（）
来获取此事件

请参阅官方文档。
您可以使用ModalController的onDismiss（）方法。简单的例子：

let modal = Modal.create(myModal, { data: [...] });

// Getting data from the modal:
modal.onDismiss(data => {
    // Update your props here
    console.log('MODAL DATA', data);
});

this.nav.present(modal);