Angular 2 Angular 2 Forms Update Angular 2 Forms ( Reactive Forms ) with registration form and confirm password validation
Example
app.module.ts
Add these into your app.module.ts file to use reactive forms
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
@NgModule({
imports: [
BrowserModule,
FormsModule,
ReactiveFormsModule,
],
declarations: [
AppComponent
]
providers: [],
bootstrap: [
AppComponent
]
})
export class AppModule {}
app.component.ts
import { Component,OnInit } from '@angular/core';
import template from './add.component.html';
import { FormGroup,FormBuilder,Validators } from '@angular/forms';
import { matchingPasswords } from './validators';
@Component({
selector: 'app',
template
})
export class AppComponent implements OnInit {
addForm: FormGroup;
constructor(private formBuilder: FormBuilder) {
}
ngOnInit() {
this.addForm = this.formBuilder.group({
username: ['', Validators.required],
email: ['', Validators.required],
role: ['', Validators.required],
password: ['', Validators.required],
password2: ['', Validators.required] },
{ validator: matchingPasswords('password', 'password2')
})
};
addUser() {
if (this.addForm.valid) {
var adduser = {
username: this.addForm.controls['username'].value,
email: this.addForm.controls['email'].value,
password: this.addForm.controls['password'].value,
profile: {
role: this.addForm.controls['role'].value,
name: this.addForm.controls['username'].value,
email: this.addForm.controls['email'].value
}
};
console.log(adduser);// adduser var contains all our form values. store it where you want
this.addForm.reset();// this will reset our form values to null
}
}
}
app.component.html
<div>
<form [formGroup]="addForm">
<input type="text" placeholder="Enter username" formControlName="username" />
<input type="text" placeholder="Enter Email Address" formControlName="email"/>
<input type="password" placeholder="Enter Password" formControlName="password" />
<input type="password" placeholder="Confirm Password" name="password2" formControlName="password2"/>
<div class='error' *ngIf="addForm.controls.password2.touched">
<div class="alert-danger errormessageadduser" *ngIf="addForm.hasError('mismatchedPasswords')"> Passwords do not match
</div>
</div>
<select name="Role" formControlName="role">
<option value="admin" >Admin</option>
<option value="Accounts">Accounts</option>
<option value="guest">Guest</option>
</select>
<br/>
<br/>
<button type="submit" (click)="addUser()"><span><i class="fa fa-user-plus" aria-hidden="true"></i></span> Add User </button>
</form>
</div>
validators.ts
export function matchingPasswords(passwordKey: string, confirmPasswordKey: string) {
return (group: ControlGroup): {
[key: string]: any
} => {
let password = group.controls[passwordKey];
let confirmPassword = group.controls[confirmPasswordKey];
if (password.value !== confirmPassword.value) {
return {
mismatchedPasswords: true
};
}
}
}
