FormTestNumberForm.php

<?php

namespace Drupal\form_test\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Builds a form to test #type 'number' and 'range' validation.
 *
 * @internal
 */
class FormTestNumberForm extends FormBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'form_test_number';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state, $element = 'number') {
        $base = [
            '#type' => $element,
        ];
        $form['integer_no_number'] = $base + [
            '#title' => 'Integer test, #no_error',
            '#default_value' => '#no_number',
        ];
        $form['integer_no_step'] = $base + [
            '#title' => 'Integer test without step',
            '#default_value' => 5,
        ];
        $form['integer_no_step_step_error'] = $base + [
            '#title' => 'Integer test without step, #step_error',
            '#default_value' => 4.5,
        ];
        $form['integer_step'] = $base + [
            '#title' => 'Integer test with step',
            '#default_value' => 5,
            '#step' => 1,
        ];
        $form['integer_step_error'] = $base + [
            '#title' => 'Integer test, with step, #step_error',
            '#default_value' => 5,
            '#step' => 2,
        ];
        $form['integer_step_min'] = $base + [
            '#title' => 'Integer test with min value',
            '#default_value' => 5,
            '#min' => 0,
            '#step' => 1,
        ];
        $form['integer_step_min_error'] = $base + [
            '#title' => 'Integer test with min value, #min_error',
            '#default_value' => 5,
            '#min' => 6,
            '#step' => 1,
        ];
        $form['integer_step_max'] = $base + [
            '#title' => 'Integer test with max value',
            '#default_value' => 5,
            '#max' => 6,
            '#step' => 1,
        ];
        $form['integer_step_max_error'] = $base + [
            '#title' => 'Integer test with max value, #max_error',
            '#default_value' => 5,
            '#max' => 4,
            '#step' => 1,
        ];
        $form['integer_step_min_border'] = $base + [
            '#title' => 'Integer test with min border check',
            '#default_value' => -1,
            '#min' => -1,
            '#step' => 1,
        ];
        $form['integer_step_max_border'] = $base + [
            '#title' => 'Integer test with max border check',
            '#default_value' => 5,
            '#max' => 5,
            '#step' => 1,
        ];
        $form['integer_step_based_on_min'] = $base + [
            '#title' => 'Integer test with step based on min check',
            '#default_value' => 3,
            '#min' => -1,
            '#step' => 2,
        ];
        $form['integer_step_based_on_min_error'] = $base + [
            '#title' => 'Integer test with step based on min check, #step_error',
            '#default_value' => 4,
            '#min' => -1,
            '#step' => 2,
        ];
        $form['float_small_step'] = $base + [
            '#title' => 'Float test with a small step',
            '#default_value' => 4,
            '#step' => 1.0E-13,
        ];
        $form['float_step_no_error'] = $base + [
            '#title' => 'Float test',
            '#default_value' => 1.2,
            '#step' => 0.3,
        ];
        $form['float_step_error'] = $base + [
            '#title' => 'Float test, #step_error',
            '#default_value' => 1.3,
            '#step' => 0.3,
        ];
        $form['float_step_hard_no_error'] = $base + [
            '#title' => 'Float test hard',
            '#default_value' => 0.9411764729088,
            '#step' => 0.00392156863712,
        ];
        $form['float_step_hard_error'] = $base + [
            '#title' => 'Float test hard, #step_error',
            '#default_value' => 0.9411764,
            '#step' => 0.00392156863,
        ];
        $form['float_step_any_no_error'] = $base + [
            '#title' => 'Arbitrary float',
            '#default_value' => 0.839562930284,
            '#step' => 'aNy',
        ];
        $form['submit'] = [
            '#type' => 'submit',
            '#value' => 'Submit',
        ];
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
    }

}