symfony-forms Forms Create a simple form in a controller

Example

A form gives the user a way to change data in your application, in a structured way. To mutate a simple array of data, we create a form using a form builder:

use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\Extension\Core\Type\NumberType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;

// ...

function myAction (Request $request) {
    $data = array(
        'value' => null,
        'number' => 10,
        'string' => 'No value',
    );
    $form = $this->createFormBuilder($data)
                 ->add('value', TextType::class, array('required' => false))
                 ->add('number', NumberType::class)
                 ->add('string', TextType::class)
                 ->add('save', SubmitType::class)
                 ->getForm();
    
    $form->handleRequest($request);
    if ($form->isValid()) {
        
        // $data is now changed with the user input
        // Do something with the data
    }
    
    return $this->render(..., array(
        'form' => $form->createView(),
        // ...
    ));
}

In your template, render your form using the form(...) Twig function:

{# Render the form #}
{{ form(form) }}

It will, without styling, look something like below:

The labels, IDs, names and form tags are generated automatically. By default, the form submits to the current page with a POST request.