A2oz

How to Import ngModel in Angular 17?

Published in Angular Forms 2 mins read

Understanding the Purpose of ngModel

In Angular, ngModel is a directive that provides two-way data binding between your component's properties and form inputs. It's a core feature of Angular's forms system and is essential for building interactive forms.

Importing ngModel in Angular 17

You don't directly import ngModel in your Angular 17 project. Instead, you need to import the FormsModule from @angular/forms. This module provides all the necessary components, directives, and services for working with forms, including ngModel.

Steps to Import FormsModule

  1. Import the FormsModule: In your component's module (usually app.module.ts), import the FormsModule from @angular/forms.

    import { NgModule } from '@angular/core';
    import { BrowserModule } from '@angular/platform-browser';
    import { FormsModule } from '@angular/forms'; // Import FormsModule
    
    import { AppComponent } from './app.component';
    
    @NgModule({
      declarations: [
        AppComponent
      ],
      imports: [
        BrowserModule,
        FormsModule // Add FormsModule to imports
      ],
      bootstrap: [AppComponent]
    })
    export class AppModule { }
  2. Use ngModel in your template: Now you can use ngModel in your component's template to bind data to form inputs.

    <input type="text" [(ngModel)]="userName">
    <p>Hello, {{userName}}!</p>

Key Points

  • FormsModule: You only need to import FormsModule once in your main module (usually app.module.ts).
  • Two-way binding: ngModel enables two-way data binding, meaning changes in the input field automatically update the component's property, and vice versa.
  • Reactive Forms: While ngModel is suitable for simple forms, consider using Reactive Forms for more complex scenarios.

Example

// app.component.ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  userName: string = '';
}
<!-- app.component.html -->
<input type="text" [(ngModel)]="userName">
<p>Hello, {{userName}}!</p>

Conclusion

Importing ngModel in Angular 17 is as simple as importing the FormsModule from @angular/forms. This module provides all the necessary tools for creating and managing forms in your Angular applications.

Related Articles