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April 14, 2017 06:55
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An Angular reactive form sample
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| @Component({ | |
| template: ` | |
| <form [formGroup]="form" (ngSubmit)="save()"> | |
| <div class="form-group"> | |
| <label for="firstname">firstname</label> | |
| <input name="firstname" class="form-control" type="text" formControlName="firstname" /> | |
| <div *ngIf="form.get('firstname').touched"> | |
| <div *ngIf="form.get('firstname').hasError('required')">This field is required.</div> | |
| </div> | |
| </div> | |
| <div class="form-group"> | |
| <label for="lastname">lastname</label> | |
| <input name="lastname" class="form-control" type="text" formControlName="lastname" /> | |
| <div *ngIf="form.get('lastname').touched"> | |
| <div *ngIf="form.get('lastname').hasError('required')">This field is required.</div> | |
| </div> | |
| </div> | |
| <div formGroupName="address"> | |
| <div class="form-group"> | |
| <label for="street">street</label> | |
| <input name="street" class="form-control" type="text" formControlName="street" /> | |
| <div *ngIf="form.get('address.street').touched"> | |
| <div *ngIf="form.get('address.street').hasError('required')">This field is required.</div> | |
| </div> | |
| </div> | |
| <div class="form-group"> | |
| <label for="housenumber">housenumber</label> | |
| <input name="housenumber" class="form-control" type="text" formControlName="housenumber" /> | |
| <div *ngIf="form.get('address.housenumber').touched"> | |
| <div *ngIf="form.get('address.housenumber').hasError('required')">This field is required.</div> | |
| </div> | |
| </div> | |
| <div class="form-group"> | |
| <label for="city">city</label> | |
| <input name="city" class="form-control" type="text" formControlName="city" /> | |
| <div *ngIf="form.get('address.city').touched"> | |
| <div *ngIf="form.get('address.city').hasError('required')">This field is required.</div> | |
| </div> | |
| </div> | |
| <div class="form-group"> | |
| <label for="zipcode">zipcode</label> | |
| <input name="zipcode" class="form-control" type="text" formControlName="zipcode" /> | |
| <div *ngIf="form.get('address.zipcode').touched"> | |
| <div *ngIf="form.get('address.zipcode').hasError('required')">This field is required.</div> | |
| </div> | |
| </div> | |
| </div> | |
| <button id="save" type="submit" [disabled]="!form.valid">save</button> | |
| </form> | |
| ` | |
| }) | |
| export class NewspaperSubscribeComponent implements OnInit { | |
| private form: FormGroup; | |
| constructor(private newspaperService: NewspaperService, private fb: FormBuilder) {} | |
| ngOnInit(): void { | |
| this.form = this.fb.group({ | |
| "firstname": new FormControl("", Validators.required), | |
| "lastname": new FormControl("", Validators.required), | |
| "address": new FormGroup({ | |
| "street": new FormControl("", Validators.required), | |
| "housenumber": new FormControl("", [Validators.required, Validators.pattern(/\d+/g)]), | |
| "city": new FormControl("", Validators.required) | |
| "zipcode": new FormControl("", [Validators.required, Validators.pattern(/\d+/g)]) | |
| }); | |
| }); | |
| } | |
| private save(): void { | |
| this.newspaperService.createSubscription(this.form.value).subscribe(); | |
| } | |
| } |
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