import { Component, OnInit } from '@angular/core';
import { FormGroup, FormControl, FormBuilder, Validators } from '@angular/forms';
import { User } from './user.interface';
@Component({
moduleId: module.id,
selector: 'my-app',
templateUrl: 'app.component.html',
})
export class AppComponent implements OnInit {
public myForm: FormGroup;
public submitted: boolean;
public events: any[] = [];
constructor(private _fb: FormBuilder) { }
ngOnInit() {
// the long way
// this.myForm = new FormGroup({
// name: new FormControl('', [<any>Validators.required, <any>Validators.minLength(5)]),
// address: new FormGroup({
// address1: new FormControl('', <any>Validators.required),
// postcode: new FormControl('8000')
// })
// });
// the short way
this.myForm = this._fb.group({
name: ['', [<any>Validators.required, <any>Validators.minLength(5)]],
address: this._fb.group({
street: ['', <any>Validators.required],
postcode: ['8000']
})
});
// subscribe to form changes
this.subcribeToFormChanges();
// Update single value
(<FormControl>this.myForm.controls['name'])
.setValue('John', { onlySelf: true });
// Update form model
// const people = {
// name: 'Jane',
// address: {
// street: 'High street',
// postcode: '94043'
// }
// };
// (<FormGroup>this.myForm)
// .setValue(people, { onlySelf: true });
}
subcribeToFormChanges() {
const myFormStatusChanges$ = this.myForm.statusChanges;
const myFormValueChanges$ = this.myForm.valueChanges;
myFormStatusChanges$.subscribe(x => this.events.push({ event: 'STATUS_CHANGED', object: x }));
myFormValueChanges$.subscribe(x => this.events.push({ event: 'VALUE_CHANGED', object: x }));
}
save(model: User, isValid: boolean) {
this.submitted = true;
console.log(model, isValid);
}
}
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, ReactiveFormsModule ],
declarations: [ AppComponent ],
bootstrap: [ AppComponent ]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app.module';
const platform = platformBrowserDynamic();
platform.bootstrapModule(AppModule);
<!DOCTYPE html>
<html>
<head>
<title>Handle different form controls</title>
<!--optional bootstrap for faster styling-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 1. Load libraries -->
<!-- Polyfill(s) for older browsers -->
<script src="https://unpkg.com/core-js/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.6.23?main=browser"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3"></script>
<script src="https://unpkg.com/systemjs@0.19.27/dist/system.src.js"></script>
<!-- 2. Configure SystemJS -->
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
</head>
<!-- 3. Display the application -->
<body>
<my-app>Loading...</my-app>
</body>
</html>
/**
* PLUNKER VERSION
* (based on systemjs.config.js in angular.io)
* System configuration for Angular 2 samples
* Adjust as necessary for your application needs.
*/
(function (global) {
System.config({
// DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
transpiler: 'ts',
typescriptOptions: {
tsconfig: true
},
meta: {
'typescript': {
"exports": "ts"
}
},
paths: {
// paths serve as alias
'npm:': 'https://unpkg.com/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'app',
// angular bundles
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
'@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular2-in-memory-web-api': 'npm:angular2-in-memory-web-api',
'ts': 'npm:plugin-typescript@4.0.10/lib/plugin.js',
'typescript': 'npm:typescript@2.0.2/lib/typescript.js',
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
main: './main.ts',
defaultExtension: 'ts'
},
rxjs: {
defaultExtension: 'js'
},
'angular2-in-memory-web-api': {
main: './index.js',
defaultExtension: 'js'
}
}
});
})(this);
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": true,
"suppressImplicitAnyIndexErrors": true
}
}
export interface User {
name: string;
address?: {
street?: string;
postcode?: string;
}
}
<div class="container">
<h1>Add user</h1>
<form [formGroup]="myForm" novalidate (ngSubmit)="save(myForm.value, myForm.valid)">
<div class="form-group">
<label for="">Name</label>
<input type="text" class="form-control" formControlName="name">
<small [hidden]="myForm.controls.name.valid || (myForm.controls.name.pristine && !submitted)" class="text-danger">
Name is required (minimum 5 characters).
</small>
<!--<pre class="margin-20">{{ myForm.controls.name.errors | json }}</pre>-->
</div>
<div class="form-group" formGroupName="address">
<label for="">Address</label>
<input type="text" class="form-control" formControlName="street">
<small [hidden]="myForm.controls.address.controls.street.valid || (myForm.controls.address.controls.street.pristine && !submitted)" class="text-danger">
Street required
</small>
</div>
<div class="form-group" formGroupName="address">
<label for="">Postcode</label>
<input type="text" class="form-control" formControlName="postcode">
</div>
<button type="submit" class="btn btn-default">Submit</button>
<div class="margin-20">
<div>myForm details:-</div>
<pre>Is myForm valid?: <br>{{myForm.valid | json}}</pre>
<pre>Is myForm submitted?: <br>{{submitted | json}}</pre>
<pre>myForm value: <br>{{myForm.value | json}}</pre>
</div>
<div class="margin-20">
Form changes:
</div>
<div *ngFor="let event of events" class="margin-20">
<pre> {{ event | json }} </pre>
</div>
</form>
</div>