Mudanças entre as edições de "Model Driven Forms (Reactive forms) in Angular2"

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Linha 29: Linha 29:
  
 
<source lang="javascript">
 
<source lang="javascript">
−
import { FormGroup, FormBuilder } from '@angular/forms';
+
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
  
 
export class MyComponent {
 
export class MyComponent {
Linha 36: Linha 36:
 
     constructor(private fb: FormBuilder) {
 
     constructor(private fb: FormBuilder) {
 
         this.myForm = fb.group({
 
         this.myForm = fb.group({
−
             'field1': '',
+
             'field1': ['', Validators.required],
−
             'field2': ''
+
             'field2': ['']
 
         });
 
         });
 
     }
 
     }
Linha 48: Linha 48:
  
 
<source lang="xml">
 
<source lang="xml">
 +
 
<form [formGroup]="myForm">
 
<form [formGroup]="myForm">
 
     <input type="text" formControlName="field1" />
 
     <input type="text" formControlName="field1" />
Linha 54: Linha 55:
 
</source>
 
</source>
  
−
or
+
[[Category: Angular]]
−
 
+
−
<source lang="xml">
+
−
<form [formGroup]="myForm">
+
−
    <input type="text" [formControl]="myForm.controls['field1']" />
+
−
    <input type="text" [formControl]="myForm.controls['field2']" />
+
−
</form>
+
−
</source>
+

Edição atual tal como às 10h39min de 27 de janeiro de 2020

A complete guide to reactive forms: Thoughtram - Model Driven Forms in Angular 2

1) In your Module:

import { ReactiveFormsModule } from '@angular/forms';

Add `ReactiveFormsModule` to `imports` section.

2) In your Component:

import { FormGroup, FormControl } from '@angular/forms';
 
export class MyComponent {
    myForm: FormGroup;
 
    constructor() {
        this.myForm = new FormGroup({
            field1: new FormControl(),
            field2: new FormControl()
        });
    }
}

or 

import { FormGroup, FormBuilder, Validators } from '@angular/forms';
 
export class MyComponent {
    myForm: FormGroup;
 
    constructor(private fb: FormBuilder) {
        this.myForm = fb.group({
            'field1': ['', Validators.required],
            'field2': ['']
        });
    }
}

3) In your template:

These are similar to ngModel of Angular1: 

<form [formGroup]="myForm">
    <input type="text" formControlName="field1" />
    <input type="text" formControlName="field2" />
</form>
Disponível em "http://www.basef.com.br/index.php?title=Model_Driven_Forms_(Reactive_forms)_in_Angular2&oldid=2296"