ArticleZip > Programmatically Set All Form Fields To Ng Touched On Form Submission

Programmatically Set All Form Fields To Ng Touched On Form Submission

Submitting a form is one of the most common interactions in web development, and it's essential to make sure that users provide all the necessary information. In Angular applications, setting all form fields to `ng-touched` upon form submission can be a helpful way to ensure that users have interacted with each field.

To tackle this task, we can utilize the power of TypeScript and Angular to programmatically set all form fields to `ng-touched` status when the form is submitted. This action can provide visual feedback to users on which fields they have interacted with, which is particularly useful when dealing with long forms or when certain fields are required.

Here's how you can achieve this functionality in your Angular application:

1. Accessing the Form in the Component:
First things first, we need to access the form in the component where the submission logic resides. You can achieve this by using Angular's `ViewChild` decorator to get a reference to the form in your component file.

Typescript

import { Component, ViewChild } from '@angular/core';
import { NgForm } from '@angular/forms';

@Component({
  selector: 'app-your-form-component',
  templateUrl: './your-form-component.component.html',
  styleUrls: ['./your-form-component.component.css']
})
export class YourFormComponent {
  @ViewChild('yourForm') yourForm: NgForm;
  
  onSubmit() {
    // Implement the logic to set all fields to 'ng-touched' here
  }
}

2. Setting Form Fields to `ng-touched` on Submission:
Inside the `onSubmit` method of your component, you can iterate through all form controls and mark them as `ng-touched`. This process can be done by leveraging the `markAsTouched` method available in Angular's Reactive Forms API.

Typescript

onSubmit() {
  Object.keys(this.yourForm.controls).forEach(key => {
    const control = this.yourForm.controls[key];
    control.markAsTouched();
  });
  
  // Additional form submission logic can be placed here
}

3. Updating the HTML Template:
In your form's HTML template, make sure to add the `(ngSubmit)` directive to bind the `onSubmit` method to the form submission event.

Html

<!-- Your form fields go here -->
  <button type="submit">Submit Form</button>

That's it! By following these steps, you can ensure that all form fields are marked as `ng-touched` when the form is submitted in your Angular application. This simple yet effective technique can improve user experience and help users easily identify which fields they have interacted with.

In conclusion, taking advantage of Angular's capabilities to programmatically set form fields to `ng-touched` on submission can enhance the usability of your web forms. Remember to test your implementation thoroughly to ensure it works seamlessly in your application. Happy coding!

Related posts:

×