Angular2 如果在表单标签中使用 ngModel，则必须设置 name 属性或表单 [英] Angular2 If ngModel is used within a form tag, either the name attribute must be set or the form

问题描述

我从 Angular 2 收到这个错误

<块引用>

core.umd.js:5995 EXCEPTION: Uncaught (in promise): Error: Error in app/model_exposure_currencies/model_exposure_currencies.component.html:57:18由以下原因引起:如果在表单标签中使用了 ngModel，则名称必须设置属性或表单控件必须在 ngModelOptions 中定义为独立".

示例 1:

示例 2:

<td *ngFor="let lag of ce.lags"><div class="form-group1"><输入名称=名称"[(ngModel)]=lag.name"[ngModelOptions]={standalone: true}";类=表单控制"模式=[0-9]*(\.[0-9]+)?"需要>

</td>

这就是我使用表单标签的方式:

解决方案

如果使用 ngForm，则所有具有 [(ngModel)]=" 的输入字段都必须有一个属性 name 带有值.

I am getting this error from Angular 2

core.umd.js:5995 EXCEPTION: Uncaught (in promise): Error: Error in app/model_exposure_currencies/model_exposure_currencies.component.html:57:18 caused by: If ngModel is used within a form tag, either the name attribute must be set or the form control must be defined as 'standalone' in ngModelOptions.

Example 1:

<input [(ngModel)]="person.firstName" name="first">

Example 2:

<input [(ngModel)]="person.firstName" [ngModelOptions]="{standalone: true}"> 

<td *ngFor="let lag of ce.lags">
    <div class="form-group1">
        <input name="name" [(ngModel)]="lag.name" [ngModelOptions]="{standalone: true}"  class="form-control" pattern="[0-9]*(\.[0-9]+)?" required>
    </div>
</td>

This is how I use form tag:

<form #f="ngForm" (ngSubmit)="onSubmit()">

解决方案

If ngForm is used, all the input fields which have [(ngModel)]="" must have an attribute name with a value.

<input [(ngModel)]="firstname" name="something">

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