Angular Forms Template Driven Forms


Example

Template - signup.component.html

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

  <div class="title">
    Sign Up
  </div>

  <div class="input-field">
    <label for="username">username</label>
    <input
      type="text"
      pattern="\w{4,20}"
      name="username"
      required="required"
      [(ngModel)]="signUpRequest.username" />
  </div>

  <div class="input-field">
    <label for="email">email</label>
    <input
      type="email"
      pattern="^\S+@\S+$"
      name="email"
      required="required"
      [(ngModel)]="signUpRequest.email" />
  </div>

  <div class="input-field">
    <label for="password">password</label>
    <input
      type="password"
      pattern=".{6,30}"
      required="required"
      name="password"
      [(ngModel)]="signUpRequest.password" />
  </div>

  <div class="status">
    {{ status }}
  </div>

  <button [disabled]="!signUpForm.form.valid" type="submit">
    <span>Sign Up</span>
  </button>

</form>

Component - signup.component.ts

import { Component } from '@angular/core';

import { SignUpRequest } from './signup-request.model';

@Component({
  selector: 'app-signup',
  templateUrl: './signup.component.html',
  styleUrls: ['./signup.component.css']
})
export class SignupComponent {

  status: string;
  signUpRequest: SignUpRequest;

  constructor() {
    this.signUpRequest = new SignUpRequest();
  }

  onSubmit(value, valid) {
    this.status = `User ${this.signUpRequest.username} has successfully signed up`;
  }

}

Model - signup-request.model.ts

export class SignUpRequest {

  constructor(
    public username: string="",
    public email: string="",
    public password: string=""
  ) {}

}

App Module - app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './app.component';
import { SignupComponent } from './signup/signup.component';

@NgModule({
  declarations: [
    AppComponent,
    SignupComponent
  ],
  imports: [
    BrowserModule,
    FormsModule
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

App Component - app.component.html

<app-signup></app-signup>