在 Angular 的选择选项中获取所选对象 [英] Getting the Selected Object in Select Option in Angular

问题描述

我有这个对象数组，我把它放在选择选项上，我想在选择选项中选择一个对象列表.但是我无法获得该对象列表的值.它输出[对象] [对象].我想获得公司对象的选定列表.我将它分配给 [value]，它得到 [object][Object].

<select class="form-control col-lg-8" #selectedValue (change)="assignCorporationToManage(selectedValue.value)"><option *ngFor="let Corporation of user_corporations" [value]="corporation">{{corporation.corp_name}}</option></选择>

<块引用>

ts

assignCorporationToManage(selectedValue) {console.log(selectedValue)}

解决方案

试试这个:

为您的选择添加 ngModel 并使用 ngModelChange 而不是更改.

1. 添加 ngModel
2. 使用 ngModelChange 而不是更改.
3. 使用 [ngValue] 而不是 [value].

component.html

<select class="form-control col-lg-8" #selectedValue name="selectedValue" id="selectedValue" [(ngModel)]="selectedValue" (ngModelChange)="assignCorporationToManage($事件)"><option *ngFor="let company of user_corporations" [ngValue]="corporation">{{corporation.corp_name}}</option></选择>

组件.ts

assignCorporationToManage(selectedValue) {console.log(selectedValue)}

I have this array of objects which I put on the select option and I would want to select one list of object in the select option. However I can't get the value of that list of object. It outputs [object] [Object]. I want to get that selected list of object of the corporation. I assigned it to the [value] and it gets [object][Object].

<div class="select" >
    <select class="form-control col-lg-8" #selectedValue (change)="assignCorporationToManage(selectedValue.value)">
        <option *ngFor="let corporation of user_corporations" [value]="corporation">{{corporation.corp_name}}</option>    
    </select>
</div>

ts

assignCorporationToManage(selectedValue) {
     console.log(selectedValue)
}

解决方案

Try like this :

add ngModel for your select and use ngModelChange instead of change.

1. adding ngModel
2. using ngModelChange instead of change.
3. using [ngValue] instead of [value].

component.html

<select class="form-control col-lg-8" #selectedValue name="selectedValue" id="selectedValue" [(ngModel)]="selectedValue" (ngModelChange)="assignCorporationToManage($event)">
    <option *ngFor="let corporation of user_corporations" [ngValue]="corporation">{{corporation.corp_name}}</option>
</select>

Component.ts

assignCorporationToManage(selectedValue) {
     console.log(selectedValue)
}

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