javascript - 无法绑定(bind)到 'ngModel'，因为它不是 'input' 的已知属性

Question

我的组件中有这个简单的输入，它使用 [(ngModel)] :

<input type="text" [(ngModel)]="test" placeholder="foo" />

当我启动我的应用程序时，我收到以下错误，即使该组件没有显示。

zone.js:461 Unhandled Promise rejection: Template parse errors: Can't bind to 'ngModel' since it isn't a known property of 'input'.

这是component.ts:

import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
import { Intervention } from '../../model/intervention';

@Component({
   selector: 'intervention-details',
   templateUrl: 'app/intervention/details/intervention.details.html',
   styleUrls: ['app/intervention/details/intervention.details.css']
})
    
export class InterventionDetails
{
   @Input() intervention: Intervention;
    
   public test : string = "toto";
}

Answer 1

是的，就是这样。在 app.module.ts 文件中，我刚刚添加了:

import { FormsModule } from '@angular/forms';

[...]

@NgModule({
  imports: [
    [...]
    FormsModule
  ],
  [...]
})