我如何在离子2中将数据从带有表单的模式传递到主页？

Question

嗨，有人可以提供帮助。 我是Ionic和Angular的新手。 我正在尝试在Ionic 2中创建一个天气应用程序。我创建了一个主页，其中一个Click事件调用AddWeather（）函数。 该函数打开一个附有表单的模态。 我试图将数据从模式上的表单传递回主页上的屏幕输出。 我尝试过ngModel但似乎无法使其正常工作。

这是我的代码：（home.ts）

import { Component } from '@angular/core';
import { NavController, ModalController, NavParams } from 'ionic-angular';
import { AddPage } from '../add/add';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  public weatherList = [];
  constructor(public navCtrl: NavController, public modalCtrl: ModalController) {

}

addWeather() {
    let addWeatherModal = this.modalCtrl.create(AddPage);


    addWeatherModal.present();
  }
}

---

(add.html)

<ion-header>
  <ion-navbar color="weatherbru">
    <ion-title>Modal</ion-title>
    <ion-buttons end>
        <button ion-button icon-only (click)="CloseModal()"><ion-icon name="close"></ion-icon></button>
    </ion-buttons>
  </ion-navbar>
</ion-header>

<ion-content padding>
    <form>
        <ion-item>
            <ion-label stacked>City</ion-label>
            <ion-input type="text" ></ion-input>
        </ion-item>
        <ion-item>
            <ion-label stacked>Country</ion-label>
            <ion-select >
                <ion-option value="us">United States</ion-option>
                <ion-option value="uk">United Kingdom</ion-option>
            </ion-select>
        </ion-item>
        <button ion-button block (click)="CloseModal()">Add Weather</button>
    </form>
<div padding>
</div>
</ion-content>

---

(add.ts)

import { Component } from '@angular/core';
import { ModalController } from 'ionic-angular';
import { NavController, NavParams, ViewController } from 'ionic-angular';

@Component({
  selector: 'page-add',
  templateUrl: 'add.html'
})
export class AddPage {

  constructor(public viewCtrl: ViewController, public navCtrl: NavController, public navParams: NavParams) {}


CloseModal() {

  this.viewCtrl.dismiss();
 }

}

Answer 1

在你的HTML中：

<form>
        <ion-item>
            <ion-label stacked>City</ion-label>
            <ion-input [(ngModel)]="form.city" type="text" ></ion-input>
        </ion-item>
        <ion-item>
            <ion-label stacked>Country</ion-label>
            <ion-select [(ngModel)]="form.country">
                <ion-option value="us">United States</ion-option>
                <ion-option value="uk">United Kingdom</ion-option>
            </ion-select>
        </ion-item>
        <button ion-button block (click)="CloseModal()">Add Weather</button>
    </form>

在你的add.ts文件中：

export class AddPage {
    form : any; //Declare the form object to be bound to your html
  constructor(public viewCtrl: ViewController, public navCtrl: NavController, public navParams: NavParams) {}

CloseModal() {

  this.viewCtrl.dismiss(this.form); //Send back the form object when closeModal is called
 }
}

在你的家里：

addWeather() {
    let addWeatherModal = this.modalCtrl.create(AddPage);

    addWeatherModal.present();
    addWeatherModal.onDidDismiss(data=>{ //This is a listener which wil get the data passed from modal when the modal's view controller is dismissed
        console.log("Data =>", data) //This will log the form entered by user in add modal.
    })
  }