无法绑定到'ngModel'，因为它不是'input'的已知属性 [英] Can't bind to 'ngModel' since it isn't a known property of 'input'

问题描述

启动Angular应用程序时出现以下错误，即使未显示该组件也是如此。

I've got the following error when launching my Angular app, even if the component is not displayed.

我必须将其注释掉以便我的应用程序正常工作。

I have to comment out the so that my app works.

zone.js:461 Unhandled Promise rejection: Template parse errors:
Can't bind to 'ngModel' since it isn't a known property of 'input'. ("
    <div>
        <label>Created:</label>
        <input  type="text" [ERROR ->][(ngModel)]="test" placeholder="foo" />
    </div>
</div>"): InterventionDetails@4:28 ; Zone: <root> ; Task: Promise.then ; Value: 

我正在看Hero plunker，但我没有看到任何差异。

I'm looking at the Hero plunker but I don't see any difference.

这是组件文件：

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";
}

推荐答案

是的就是这样，在app.module.ts，我刚刚添加：

Yes that's it, in the app.module.ts, I just added :

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

[...]

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

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