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1 <?php
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2
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3 namespace Drupal\node\Controller;
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4
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5 use Drupal\Component\Utility\Xss;
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6 use Drupal\Core\Controller\ControllerBase;
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7 use Drupal\Core\Datetime\DateFormatterInterface;
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8 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
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9 use Drupal\Core\Entity\EntityRepositoryInterface;
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10 use Drupal\Core\Render\RendererInterface;
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11 use Drupal\Core\Url;
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12 use Drupal\node\NodeStorageInterface;
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13 use Drupal\node\NodeTypeInterface;
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14 use Drupal\node\NodeInterface;
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15 use Symfony\Component\DependencyInjection\ContainerInterface;
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16
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17 /**
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18 * Returns responses for Node routes.
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19 */
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20 class NodeController extends ControllerBase implements ContainerInjectionInterface {
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21
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22 /**
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23 * The date formatter service.
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24 *
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25 * @var \Drupal\Core\Datetime\DateFormatterInterface
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26 */
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27 protected $dateFormatter;
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28
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29 /**
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30 * The renderer service.
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31 *
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32 * @var \Drupal\Core\Render\RendererInterface
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33 */
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34 protected $renderer;
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35
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36 /**
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37 * The entity repository service.
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38 *
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39 * @var \Drupal\Core\Entity\EntityRepositoryInterface
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40 */
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41 protected $entityRepository;
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42
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43 /**
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44 * Constructs a NodeController object.
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45 *
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46 * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
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47 * The date formatter service.
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48 * @param \Drupal\Core\Render\RendererInterface $renderer
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49 * The renderer service.
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50 * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
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51 * The entity repository.
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52 */
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53 public function __construct(DateFormatterInterface $date_formatter, RendererInterface $renderer, EntityRepositoryInterface $entity_repository = NULL) {
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54 $this->dateFormatter = $date_formatter;
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55 $this->renderer = $renderer;
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56 if (!$entity_repository) {
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57 @trigger_error('The entity.repository service must be passed to NodeController::__construct(), it is required before Drupal 9.0.0. See https://www.drupal.org/node/2549139.', E_USER_DEPRECATED);
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58 $entity_repository = \Drupal::service('entity.repository');
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59 }
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60 $this->entityRepository = $entity_repository;
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61 }
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62
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63 /**
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64 * {@inheritdoc}
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65 */
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66 public static function create(ContainerInterface $container) {
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67 return new static(
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68 $container->get('date.formatter'),
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69 $container->get('renderer'),
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70 $container->get('entity.repository')
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71 );
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72 }
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73
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74 /**
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75 * Displays add content links for available content types.
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76 *
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77 * Redirects to node/add/[type] if only one content type is available.
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78 *
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79 * @return array|\Symfony\Component\HttpFoundation\RedirectResponse
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80 * A render array for a list of the node types that can be added; however,
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81 * if there is only one node type defined for the site, the function
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82 * will return a RedirectResponse to the node add page for that one node
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83 * type.
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84 */
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85 public function addPage() {
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86 $build = [
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87 '#theme' => 'node_add_list',
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88 '#cache' => [
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89 'tags' => $this->entityTypeManager()->getDefinition('node_type')->getListCacheTags(),
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90 ],
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91 ];
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92
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93 $content = [];
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94
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95 // Only use node types the user has access to.
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96 foreach ($this->entityTypeManager()->getStorage('node_type')->loadMultiple() as $type) {
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97 $access = $this->entityTypeManager()->getAccessControlHandler('node')->createAccess($type->id(), NULL, [], TRUE);
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98 if ($access->isAllowed()) {
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99 $content[$type->id()] = $type;
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100 }
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101 $this->renderer->addCacheableDependency($build, $access);
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102 }
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103
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104 // Bypass the node/add listing if only one content type is available.
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105 if (count($content) == 1) {
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106 $type = array_shift($content);
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107 return $this->redirect('node.add', ['node_type' => $type->id()]);
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108 }
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109
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110 $build['#content'] = $content;
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111
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112 return $build;
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113 }
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114
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115 /**
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116 * Provides the node submission form.
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117 *
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118 * @param \Drupal\node\NodeTypeInterface $node_type
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119 * The node type entity for the node.
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120 *
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121 * @return array
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122 * A node submission form.
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123 */
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124 public function add(NodeTypeInterface $node_type) {
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125 $node = $this->entityTypeManager()->getStorage('node')->create([
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126 'type' => $node_type->id(),
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127 ]);
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128
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129 $form = $this->entityFormBuilder()->getForm($node);
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130
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131 return $form;
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132 }
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133
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134 /**
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135 * Displays a node revision.
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136 *
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137 * @param int $node_revision
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138 * The node revision ID.
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139 *
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140 * @return array
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141 * An array suitable for \Drupal\Core\Render\RendererInterface::render().
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142 */
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143 public function revisionShow($node_revision) {
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144 $node = $this->entityTypeManager()->getStorage('node')->loadRevision($node_revision);
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145 $node = $this->entityRepository->getTranslationFromContext($node);
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146 $node_view_controller = new NodeViewController($this->entityTypeManager(), $this->renderer, $this->currentUser(), $this->entityRepository);
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147 $page = $node_view_controller->view($node);
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148 unset($page['nodes'][$node->id()]['#cache']);
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149 return $page;
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150 }
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151
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152 /**
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153 * Page title callback for a node revision.
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154 *
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155 * @param int $node_revision
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156 * The node revision ID.
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157 *
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158 * @return string
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159 * The page title.
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160 */
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161 public function revisionPageTitle($node_revision) {
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162 $node = $this->entityTypeManager()->getStorage('node')->loadRevision($node_revision);
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163 return $this->t('Revision of %title from %date', ['%title' => $node->label(), '%date' => $this->dateFormatter->format($node->getRevisionCreationTime())]);
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164 }
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165
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166 /**
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167 * Generates an overview table of older revisions of a node.
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168 *
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169 * @param \Drupal\node\NodeInterface $node
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170 * A node object.
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171 *
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172 * @return array
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173 * An array as expected by \Drupal\Core\Render\RendererInterface::render().
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174 */
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175 public function revisionOverview(NodeInterface $node) {
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176 $account = $this->currentUser();
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177 $langcode = $node->language()->getId();
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178 $langname = $node->language()->getName();
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179 $languages = $node->getTranslationLanguages();
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180 $has_translations = (count($languages) > 1);
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181 $node_storage = $this->entityTypeManager()->getStorage('node');
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182 $type = $node->getType();
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183
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184 $build['#title'] = $has_translations ? $this->t('@langname revisions for %title', ['@langname' => $langname, '%title' => $node->label()]) : $this->t('Revisions for %title', ['%title' => $node->label()]);
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185 $header = [$this->t('Revision'), $this->t('Operations')];
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186
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187 $revert_permission = (($account->hasPermission("revert $type revisions") || $account->hasPermission('revert all revisions') || $account->hasPermission('administer nodes')) && $node->access('update'));
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188 $delete_permission = (($account->hasPermission("delete $type revisions") || $account->hasPermission('delete all revisions') || $account->hasPermission('administer nodes')) && $node->access('delete'));
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189
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190 $rows = [];
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191 $default_revision = $node->getRevisionId();
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192 $current_revision_displayed = FALSE;
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193
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194 foreach ($this->getRevisionIds($node, $node_storage) as $vid) {
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195 /** @var \Drupal\node\NodeInterface $revision */
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196 $revision = $node_storage->loadRevision($vid);
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197 // Only show revisions that are affected by the language that is being
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198 // displayed.
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199 if ($revision->hasTranslation($langcode) && $revision->getTranslation($langcode)->isRevisionTranslationAffected()) {
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200 $username = [
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201 '#theme' => 'username',
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202 '#account' => $revision->getRevisionUser(),
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203 ];
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204
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205 // Use revision link to link to revisions that are not active.
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206 $date = $this->dateFormatter->format($revision->revision_timestamp->value, 'short');
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207
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208 // We treat also the latest translation-affecting revision as current
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209 // revision, if it was the default revision, as its values for the
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210 // current language will be the same of the current default revision in
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211 // this case.
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212 $is_current_revision = $vid == $default_revision || (!$current_revision_displayed && $revision->wasDefaultRevision());
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213 if (!$is_current_revision) {
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214 $link = $this->l($date, new Url('entity.node.revision', ['node' => $node->id(), 'node_revision' => $vid]));
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215 }
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216 else {
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217 $link = $node->toLink($date)->toString();
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218 $current_revision_displayed = TRUE;
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219 }
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220
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221 $row = [];
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222 $column = [
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223 'data' => [
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224 '#type' => 'inline_template',
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225 '#template' => '{% trans %}{{ date }} by {{ username }}{% endtrans %}{% if message %}<p class="revision-log">{{ message }}</p>{% endif %}',
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226 '#context' => [
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227 'date' => $link,
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228 'username' => $this->renderer->renderPlain($username),
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229 'message' => ['#markup' => $revision->revision_log->value, '#allowed_tags' => Xss::getHtmlTagList()],
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230 ],
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231 ],
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232 ];
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233 // @todo Simplify once https://www.drupal.org/node/2334319 lands.
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234 $this->renderer->addCacheableDependency($column['data'], $username);
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235 $row[] = $column;
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236
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237 if ($is_current_revision) {
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238 $row[] = [
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239 'data' => [
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240 '#prefix' => '<em>',
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241 '#markup' => $this->t('Current revision'),
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242 '#suffix' => '</em>',
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243 ],
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244 ];
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245
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246 $rows[] = [
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247 'data' => $row,
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248 'class' => ['revision-current'],
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249 ];
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250 }
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251 else {
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252 $links = [];
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253 if ($revert_permission) {
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254 $links['revert'] = [
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255 'title' => $vid < $node->getRevisionId() ? $this->t('Revert') : $this->t('Set as current revision'),
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256 'url' => $has_translations ?
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257 Url::fromRoute('node.revision_revert_translation_confirm', ['node' => $node->id(), 'node_revision' => $vid, 'langcode' => $langcode]) :
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258 Url::fromRoute('node.revision_revert_confirm', ['node' => $node->id(), 'node_revision' => $vid]),
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259 ];
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260 }
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261
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262 if ($delete_permission) {
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263 $links['delete'] = [
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264 'title' => $this->t('Delete'),
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265 'url' => Url::fromRoute('node.revision_delete_confirm', ['node' => $node->id(), 'node_revision' => $vid]),
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266 ];
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267 }
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268
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269 $row[] = [
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270 'data' => [
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271 '#type' => 'operations',
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272 '#links' => $links,
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273 ],
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274 ];
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275
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276 $rows[] = $row;
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277 }
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278 }
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279 }
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280
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281 $build['node_revisions_table'] = [
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282 '#theme' => 'table',
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283 '#rows' => $rows,
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284 '#header' => $header,
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285 '#attached' => [
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286 'library' => ['node/drupal.node.admin'],
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287 ],
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288 '#attributes' => ['class' => 'node-revision-table'],
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289 ];
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290
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291 $build['pager'] = ['#type' => 'pager'];
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292
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293 return $build;
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294 }
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295
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296 /**
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297 * The _title_callback for the node.add route.
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298 *
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299 * @param \Drupal\node\NodeTypeInterface $node_type
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300 * The current node.
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301 *
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302 * @return string
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303 * The page title.
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304 */
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305 public function addPageTitle(NodeTypeInterface $node_type) {
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306 return $this->t('Create @name', ['@name' => $node_type->label()]);
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307 }
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308
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309 /**
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310 * Gets a list of node revision IDs for a specific node.
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311 *
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312 * @param \Drupal\node\NodeInterface $node
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313 * The node entity.
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314 * @param \Drupal\node\NodeStorageInterface $node_storage
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315 * The node storage handler.
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316 *
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317 * @return int[]
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318 * Node revision IDs (in descending order).
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319 */
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320 protected function getRevisionIds(NodeInterface $node, NodeStorageInterface $node_storage) {
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321 $result = $node_storage->getQuery()
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322 ->allRevisions()
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323 ->condition($node->getEntityType()->getKey('id'), $node->id())
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324 ->sort($node->getEntityType()->getKey('revision'), 'DESC')
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325 ->pager(50)
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326 ->execute();
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327 return array_keys($result);
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328 }
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329
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330 }
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