Can t bind to ngModel since it isn t a known property of input

Question

I have this  input in my component which uses [(ngModel)] :

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

When I launch the app, I get this error.

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

The 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";
}

Can someone please help me with this?

Answer 1

Just add this in the app.module.ts file:

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

[...]

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

I hope this helps.