# Validation Ionic 4

**URL:** <https://forum.ionicframework.com/t/validation-ionic-4/159493>\
**Category:** ionic-v3\
**Created:** [March 19, 2019, 3:56pm UTC](https://forum.ionicframework.com/t/validation-ionic-4/159493 "2019-03-19T15:56:17Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![rafaelmoura](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/rafaelmoura/32/106057_2.png) [@rafaelmoura](https://forum.ionicframework.com/u/rafaelmoura)\
**Post date:** [March 19, 2019, 3:56pm UTC](https://forum.ionicframework.com/t/validation-ionic-4/159493/1 "2019-03-19T15:56:17Z")

</div>

How to validate filds the input Ionic 4?

```auto
<ion-item>
   <ion-label position="floating">Matrícula</ion-label>
       <ion-input type="text" name="name" name="ngModel" [(ngModel)]="this.service.usuario.name" required></ion-input>
        <!-- <mat-error *ngIf="name.invalid && name.touched">
         Fild Name <strong>required!</strong>
        </mat-error> -->
</ion-item>

```

---

<div class="post-metadata">

**Author:** ![IonicGeoff](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/ionicgeoff/32/128657_2.png) [@IonicGeoff](https://forum.ionicframework.com/u/IonicGeoff)\
**Post date:** [March 19, 2019, 11:10pm UTC](https://forum.ionicframework.com/t/validation-ionic-4/159493/2 "2019-03-19T23:10:13Z")

</div>

There are lots of tutorials online, do a Google search.

e.g.

> **[Ionic tutorial: Forms and Validations in Ionic 4](https://ionicthemes.com/tutorials/about/forms-and-validation-in-ionic)**
>
> Learn everything about Ionic forms and input validations with this ionic 4 tutorial. Best practices for designing user-friendly forms in Ionic 4 and the differences between Angular template-driven and reactive forms.