ionChange使用ion-select传递的数据不会作为输入传递给api-Ionic

时间:2018-10-27 05:27:32

标签: ionic-framework ion-select

大家好,我正在开发这个食品配送应用程序,用户在离子选择组件中输入了一个配送圈,他/她停留在那里,然后我通过获取配送圈的值来触发另一个api(例如1 ,2,3 ... etc)放置在另一个离子选择组件中,该组件是他/她留下的区域或位置,并根据所选的传送圈填充离子选择。

在这里,我能够传递交货圈的价值,并且我已经控制了交货价值及其罚款。但是当我尝试将id作为数据传递给下一个api时,它变成空白...

这是我的html文件

<ion-content padding class="bgpage">
<div class = "col-md-6">
<ion-item>
  <ion-label>Delivery Circle</ion-label>
  <ion-select [(ngModel)]="data" (ionChange) = "delAreaCircle(del_cir)">
    <ion-option  *ngFor = "let data of circleResponse" [value]="data['del_c_id']">{{data['del_c_name']}}</ion-option>
  </ion-select>
</ion-item>
</div>
<ion-item>
  <ion-label>Area / Near by Locality</ion-label>
  <ion-select [(ngModel)]="area_loc">
    <ion-option value="1">St. cruz</ion-option>
  </ion-select>
</ion-item>
</ion-content>

这是我的.ts文件功能。

delCircle(){
let circleUrl = 'http://url/folder/filename.php';
let circleData: Observable<any> = this.http.get(circleUrl);
circleData.subscribe( data => { this.circleResponse = data.json();
this.circleResponse = this.circleResponse; 
console.log(this.circleResponse);

});
}

delAreaCircle(id){
let headers = new Headers();
headers.append('Content-Type', 'application/json');

console.log("Inside Location Cordinates",id)
this.del_id = id;
let options = new RequestOptions({ headers: headers });
let circlePassData = {"del_c_id":this.del_id}
console.log("dataPassed",this.circlePassData);
this.http.post('http://url/folder/filename.php', circlePassData , options)
.subscribe(data => {this.circlePassDataFetch = data.json();

console.log("dataReached",this.circlePassDataFetch);

});  
}

1 个答案:

答案 0 :(得分:0)

将(ionChange)函数中的参数更改为 $ event 。这会将所选选项的值传递给您的函数。

<ion-content padding class="bgpage">
<div class = "col-md-6">
<ion-item>
  <ion-label>Delivery Circle</ion-label>
  <ion-select [(ngModel)]="data" (ionChange) = "delAreaCircle($event)">
    <ion-option  *ngFor = "let data of circleResponse" [value]="data['del_c_id']">{{data['del_c_name']}}</ion-option>
  </ion-select>
</ion-item>
</div>
<ion-item>
  <ion-label>Area / Near by Locality</ion-label>
  <ion-select [(ngModel)]="area_loc">
    <ion-option value="1">St. cruz</ion-option>
  </ion-select>
</ion-item>
</ion-content>