social_content_block.module in Open Social 8.6

The Social Content Block module.

File

modules/social_features/social_content_block/social_content_block.module

<?php

/**
 * @file
 * The Social Content Block module.
 */
use Drupal\Core\Block\BlockPluginInterface;
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_preprocess_block().
 */
function social_content_block_preprocess_block(&$variables) {
  if ($variables['base_plugin_id'] === 'block_content' && isset($variables['content']['#block_content']) && $variables['content']['#block_content']
    ->bundle() === 'custom_content_list') {
    $variables['content']['social_content_block'] = $variables['elements']['social_content_block'];
    $variables['card'] = TRUE;
  }
}

/**
 * Implements hook_block_view_BASE_BLOCK_ID_alter().
 */
function social_content_block_block_view_block_content_alter(&$build, BlockPluginInterface $block) {
  if ($block_entity = _social_content_block_is_custom_content_block($block)) {
    $build['social_content_block'] = [
      '#lazy_builder' => [
        'social_content_block.content_builder:build',
        [
          $block_entity
            ->getEntityTypeId(),
          $block_entity
            ->id(),
        ],
      ],
      '#create_placeholder' => TRUE,
    ];
  }
}

/**
 * Checks if a block is a Custom content block.
 */
function _social_content_block_is_custom_content_block(BlockPluginInterface $block) {
  if ($block
    ->getBaseId() === 'block_content') {
    $uuid = $block
      ->getDerivativeId();

    /** @var \Drupal\block_content\BlockContentInterface $block_entity */
    $block_entity = \Drupal::service('entity.repository')
      ->loadEntityByUuid('block_content', $uuid);
    if ($block_entity
      ->bundle() === 'custom_content_list') {
      return $block_entity;
    }
  }
  return FALSE;
}

/**
 * Implements hook_form_BASE_FORM_ID_alter().
 */
function social_content_block_form_block_content_custom_content_list_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Add general description above first field to explain what the filters do.
  $form['field_topic_type'] += [
    '#prefix' => t('To make the list of topics more specific you can additionally configure more filters such as topic types, content tags and groups.'),
  ];

  // Add description per field explaining what to fill in.
  $form['field_topic_type'] += [
    '#suffix' => t('Autocomplete field with items from taxonomy list topic types.'),
  ];
  $form['field_content_tags'] += [
    '#suffix' => t('Autocomplete field with items from taxonomy list content tags.'),
  ];
  $form['field_group'] += [
    '#suffix' => t('Autocomplete field with group names.'),
  ];

  // Add submit handler to clear cache.
  foreach (array_keys($form['actions']) as $action) {
    if ($action !== 'preview' && isset($form['actions'][$action]['#type']) && $form['actions'][$action]['#type'] === 'submit') {
      $form['actions'][$action]['#submit'][] = 'custom_content_block_form_submit';
    }
  }
}

/**
 * Custom submit handler.
 */
function custom_content_block_form_submit($form, FormStateInterface $form_state) {

  // Clear plugin cache.
  \Drupal::service('plugin.cache_clearer')
    ->clearCachedDefinitions();
}

/**
 * Implements hook_theme().
 */
function social_content_block_theme($existing, $type, $theme, $path) {
  return [
    'social_content_block' => [
      'variables' => [
        'title' => NULL,
        'subtitle' => NULL,
        'topics' => [],
        'link' => NULL,
      ],
    ],
  ];
}

Functions

Name	Description
custom_content_block_form_submit	Custom submit handler.
social_content_block_block_view_block_content_alter	Implements hook_block_view_BASE_BLOCK_ID_alter().
social_content_block_form_block_content_custom_content_list_form_alter	Implements hook_form_BASE_FORM_ID_alter().
social_content_block_preprocess_block	Implements hook_preprocess_block().
social_content_block_theme	Implements hook_theme().
_social_content_block_is_custom_content_block	Checks if a block is a Custom content block.