block_permissions.module in Block permissions 8

Block permissions module.

File

block_permissions.module

<?php

/**
 * @file
 * Block permissions module.
 */
use Drupal\Core\Render\Element;
use Drupal\block\Entity\Block;
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_FORM_ID_alter().
 */
function block_permissions_form_block_admin_display_form_alter(&$form, FormStateInterface $form_state) {

  // Iterate over the blocks in the overview form and disable them if the user
  // does not have permission to administer the blocks for the provider of the
  // block.
  $block_elements = Element::children($form['blocks']);
  foreach ($block_elements as $key) {
    if (substr($key, 0, 6) != 'region' && ($block = Block::load($key))) {
      $settings = $block
        ->get('settings');

      // Validate permissions, if the user doesn't have them: disable the
      // region.
      if (!\Drupal::currentUser()
        ->hasPermission('administer blocks provided by ' . $settings['provider'])) {

        // Convert weight to a hidden field.
        $form['blocks'][$key]['weight']['#type'] = 'hidden';

        // Restrict access to region-theme and operations.
        $form['blocks'][$key]['region-theme']['#access'] = FALSE;
        $form['blocks'][$key]['operations']['#access'] = FALSE;

        // Remove the draggable class and replace it with undraggable.
        $class_key = array_search('draggable', $form['blocks'][$key]['#attributes']['class']);
        if ($class_key !== FALSE) {
          $form['blocks'][$key]['#attributes']['class'][$class_key] = 'undraggable';
        }
      }
    }
  }
}

Functions

Name	Description
block_permissions_form_block_admin_display_form_alter	Implements hook_form_FORM_ID_alter().