trim.module in Trim 8

Trim module.

File

trim.module

<?php

/**
 * @file
 * Trim module.
 */
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_alter().
 */
function trim_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Ensure that there is an array here.
  if (!isset($form['#validate'])) {
    $form['#validate'] = [];
  }
  elseif (!is_array($form['#validate'])) {
    $form['#validate'][] = $form['#validate'];
  }

  // Now add a new function to the list, but ensure that it is called first.
  array_unshift($form['#validate'], 'trim_form_values');
}

/**
 * Validation callback function. Trim the values of the form.
 */
function trim_form_values(&$form, FormStateInterface $form_state) {
  foreach ($form_state
    ->getValues() as $key => $value) {
    trim_value($value);
    $form_state
      ->setValue($key, $value);
  }
}

/**
 * Trim string values and recursively trim array values.
 *
 * @param mixed &$value
 *   A string, integer, array, or object of the value.
 */
function trim_value(&$value) {
  if (is_array($value)) {
    foreach ($value as &$value2) {
      trim_value($value2);
    }
  }
  elseif (is_string($value)) {
    $value = trim($value);
  }
}

Functions

Name	Description
trim_form_alter	Implements hook_form_alter().
trim_form_values	Validation callback function. Trim the values of the form.
trim_value	Trim string values and recursively trim array values.