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path: root/core/modules/node/src/Entity/Node.php
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<?php

/**
 * @file
 * Contains \Drupal\node\Entity\Node.
 */

namespace Drupal\node\Entity;

use Drupal\Core\Entity\ContentEntityBase;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Field\BaseFieldDefinition;
use Drupal\Core\Language\LanguageInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\node\NodeInterface;
use Drupal\user\UserInterface;

/**
 * Defines the node entity class.
 *
 * @ContentEntityType(
 *   id = "node",
 *   label = @Translation("Content"),
 *   bundle_label = @Translation("Content type"),
 *   handlers = {
 *     "storage" = "Drupal\node\NodeStorage",
 *     "storage_schema" = "Drupal\node\NodeStorageSchema",
 *     "view_builder" = "Drupal\node\NodeViewBuilder",
 *     "access" = "Drupal\node\NodeAccessControlHandler",
 *     "views_data" = "Drupal\node\NodeViewsData",
 *     "form" = {
 *       "default" = "Drupal\node\NodeForm",
 *       "delete" = "Drupal\node\Form\NodeDeleteForm",
 *       "edit" = "Drupal\node\NodeForm"
 *     },
 *     "list_builder" = "Drupal\node\NodeListBuilder",
 *     "translation" = "Drupal\node\NodeTranslationHandler"
 *   },
 *   base_table = "node",
 *   data_table = "node_field_data",
 *   revision_table = "node_revision",
 *   revision_data_table = "node_field_revision",
 *   translatable = TRUE,
 *   entity_keys = {
 *     "id" = "nid",
 *     "revision" = "vid",
 *     "bundle" = "type",
 *     "label" = "title",
 *     "uuid" = "uuid"
 *   },
 *   bundle_entity_type = "node_type",
 *   field_ui_base_route = "entity.node_type.edit_form",
 *   permission_granularity = "bundle",
 *   links = {
 *     "canonical" = "entity.node.canonical",
 *     "delete-form" = "entity.node.delete_form",
 *     "edit-form" = "entity.node.edit_form",
 *     "version-history" = "entity.node.version_history",
 *   }
 * )
 */
class Node extends ContentEntityBase implements NodeInterface {

  /**
   * {@inheritdoc}
   */
  public function preSave(EntityStorageInterface $storage) {
    parent::preSave($storage);

    // If no owner has been set explicitly, make the current user the owner.
    if (!$this->getOwner()) {
      $this->setOwnerId(\Drupal::currentUser()->id());
    }
    // If no revision author has been set explicitly, make the node owner the
    // revision author.
    if (!$this->getRevisionAuthor()) {
      $this->setRevisionAuthorId($this->getOwnerId());
    }
  }

  /**
   * {@inheritdoc}
   */
  public function preSaveRevision(EntityStorageInterface $storage, \stdClass $record) {
    parent::preSaveRevision($storage, $record);

    if (!$this->isNewRevision() && isset($this->original) && (!isset($record->revision_log) || $record->revision_log === '')) {
      // If we are updating an existing node without adding a new revision, we
      // need to make sure $entity->revision_log is reset whenever it is empty.
      // Therefore, this code allows us to avoid clobbering an existing log
      // entry with an empty one.
      $record->revision_log = $this->original->revision_log->value;
    }
  }

  /**
   * {@inheritdoc}
   */
  public function postSave(EntityStorageInterface $storage, $update = TRUE) {
    parent::postSave($storage, $update);

    // Update the node access table for this node, but only if it is the
    // default revision. There's no need to delete existing records if the node
    // is new.
    if ($this->isDefaultRevision()) {
      \Drupal::entityManager()->getAccessControlHandler('node')->writeGrants($this, $update);
    }

    // Reindex the node when it is updated. The node is automatically indexed
    // when it is added, simply by being added to the node table.
    if ($update) {
      node_reindex_node_search($this->id());
    }
  }

  /**
   * {@inheritdoc}
   */
  public static function preDelete(EntityStorageInterface $storage, array $entities) {
    parent::preDelete($storage, $entities);

    // Ensure that all nodes deleted are removed from the search index.
    if (\Drupal::moduleHandler()->moduleExists('search')) {
      foreach ($entities as $entity) {
        search_index_clear('node_search', $entity->nid->value);
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public static function postDelete(EntityStorageInterface $storage, array $nodes) {
    parent::postDelete($storage, $nodes);
    \Drupal::service('node.grant_storage')->deleteNodeRecords(array_keys($nodes));
  }

  /**
   * {@inheritdoc}
   */
  public function getType() {
    return $this->bundle();
  }

  /**
   * {@inheritdoc}
   */
  public function access($operation = 'view', AccountInterface $account = NULL, $return_as_object = FALSE) {
    if ($operation == 'create') {
      return parent::access($operation, $account, $return_as_object);
    }

    return \Drupal::entityManager()
      ->getAccessControlHandler($this->entityTypeId)
      ->access($this, $operation, $this->prepareLangcode(), $account, $return_as_object);
  }

  /**
   * {@inheritdoc}
   */
  public function prepareLangcode() {
    $langcode = $this->language()->getId();
    // If the Language module is enabled, try to use the language from content
    // negotiation.
    if (\Drupal::moduleHandler()->moduleExists('language')) {
      // Load languages the node exists in.
      $node_translations = $this->getTranslationLanguages();
      // Load the language from content negotiation.
      $content_negotiation_langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
      // If there is a translation available, use it.
      if (isset($node_translations[$content_negotiation_langcode])) {
        $langcode = $content_negotiation_langcode;
      }
    }
    return $langcode;
  }


  /**
   * {@inheritdoc}
   */
  public function getTitle() {
    return $this->get('title')->value;
  }

  /**
   * {@inheritdoc}
   */
  public function setTitle($title) {
    $this->set('title', $title);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getCreatedTime() {
    return $this->get('created')->value;
  }


  /**
   * {@inheritdoc}
   */
  public function setCreatedTime($timestamp) {
    $this->set('created', $timestamp);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getChangedTime() {
    return $this->get('changed')->value;
  }

  /**
   * {@inheritdoc}
   */
  public function isPromoted() {
    return (bool) $this->get('promote')->value;
  }

  /**
   * {@inheritdoc}
   */
  public function setPromoted($promoted) {
    $this->set('promote', $promoted ? NODE_PROMOTED : NODE_NOT_PROMOTED);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function isSticky() {
    return (bool) $this->get('sticky')->value;
  }

  /**
   * {@inheritdoc}
   */
  public function setSticky($sticky) {
    $this->set('sticky', $sticky ? NODE_STICKY : NODE_NOT_STICKY);
    return $this;
  }
  /**
   * {@inheritdoc}
   */
  public function isPublished() {
    return (bool) $this->get('status')->value;
  }

  /**
   * {@inheritdoc}
   */
  public function setPublished($published) {
    $this->set('status', $published ? NODE_PUBLISHED : NODE_NOT_PUBLISHED);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getOwner() {
    return $this->get('uid')->entity;
  }

  /**
   * {@inheritdoc}
   */
  public function getOwnerId() {
    return $this->get('uid')->target_id;
  }

  /**
   * {@inheritdoc}
   */
  public function setOwnerId($uid) {
    $this->set('uid', $uid);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function setOwner(UserInterface $account) {
    $this->set('uid', $account->id());
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getRevisionCreationTime() {
    return $this->get('revision_timestamp')->value;
  }

  /**
   * {@inheritdoc}
   */
  public function setRevisionCreationTime($timestamp) {
    $this->set('revision_timestamp', $timestamp);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getRevisionAuthor() {
    return $this->get('revision_uid')->entity;
  }

  /**
   * {@inheritdoc}
   */
  public function setRevisionAuthorId($uid) {
    $this->set('revision_uid', $uid);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
    $fields['nid'] = BaseFieldDefinition::create('integer')
      ->setLabel(t('Node ID'))
      ->setDescription(t('The node ID.'))
      ->setReadOnly(TRUE)
      ->setSetting('unsigned', TRUE);

    $fields['uuid'] = BaseFieldDefinition::create('uuid')
      ->setLabel(t('UUID'))
      ->setDescription(t('The node UUID.'))
      ->setReadOnly(TRUE);

    $fields['vid'] = BaseFieldDefinition::create('integer')
      ->setLabel(t('Revision ID'))
      ->setDescription(t('The node revision ID.'))
      ->setReadOnly(TRUE)
      ->setSetting('unsigned', TRUE);

    $fields['type'] = BaseFieldDefinition::create('entity_reference')
      ->setLabel(t('Type'))
      ->setDescription(t('The node type.'))
      ->setSetting('target_type', 'node_type')
      ->setReadOnly(TRUE);

    $fields['langcode'] = BaseFieldDefinition::create('language')
      ->setLabel(t('Language'))
      ->setDescription(t('The node language code.'))
      ->setRevisionable(TRUE)
      ->setDisplayOptions('view', array(
        'type' => 'hidden',
      ))
      ->setDisplayOptions('form', array(
        'type' => 'language_select',
        'weight' => 2,
      ));

    $fields['title'] = BaseFieldDefinition::create('string')
      ->setLabel(t('Title'))
      ->setDescription(t('The title of this node, always treated as non-markup plain text.'))
      ->setRequired(TRUE)
      ->setTranslatable(TRUE)
      ->setRevisionable(TRUE)
      ->setDefaultValue('')
      ->setSetting('max_length', 255)
      ->setDisplayOptions('view', array(
        'label' => 'hidden',
        'type' => 'string',
        'weight' => -5,
      ))
      ->setDisplayOptions('form', array(
        'type' => 'string_textfield',
        'weight' => -5,
      ))
      ->setDisplayConfigurable('form', TRUE);

    $fields['uid'] = BaseFieldDefinition::create('entity_reference')
      ->setLabel(t('Authored by'))
      ->setDescription(t('The user ID of the node author.'))
      ->setRevisionable(TRUE)
      ->setSetting('target_type', 'user')
      ->setSetting('handler', 'default')
      ->setDefaultValueCallback('Drupal\node\Entity\Node::getCurrentUserId')
      ->setTranslatable(TRUE)
      ->setDisplayOptions('view', array(
        'label' => 'hidden',
        'type' => 'author',
        'weight' => 0,
      ))
      ->setDisplayOptions('form', array(
        'type' => 'entity_reference_autocomplete',
        'weight' => 5,
        'settings' => array(
          'match_operator' => 'CONTAINS',
          'size' => '60',
          'autocomplete_type' => 'tags',
          'placeholder' => '',
        ),
      ))
      ->setDisplayConfigurable('form', TRUE);

    $fields['status'] = BaseFieldDefinition::create('boolean')
      ->setLabel(t('Publishing status'))
      ->setDescription(t('A boolean indicating whether the node is published.'))
      ->setRevisionable(TRUE)
      ->setTranslatable(TRUE)
      ->setDefaultValue(TRUE);

    $fields['created'] = BaseFieldDefinition::create('created')
      ->setLabel(t('Authored on'))
      ->setDescription(t('The time that the node was created.'))
      ->setRevisionable(TRUE)
      ->setTranslatable(TRUE)
      ->setDisplayOptions('view', array(
        'label' => 'hidden',
        'type' => 'timestamp',
        'weight' => 0,
      ))
      ->setDisplayOptions('form', array(
        'type' => 'datetime_timestamp',
        'weight' => 10,
      ))
      ->setDisplayConfigurable('form', TRUE);

    $fields['changed'] = BaseFieldDefinition::create('changed')
      ->setLabel(t('Changed'))
      ->setDescription(t('The time that the node was last edited.'))
      ->setRevisionable(TRUE)
      ->setTranslatable(TRUE);

    $fields['promote'] = BaseFieldDefinition::create('boolean')
      ->setLabel(t('Promote'))
      ->setDescription(t('A boolean indicating whether the node should be displayed on the front page.'))
      ->setRevisionable(TRUE)
      ->setTranslatable(TRUE)
      ->setDefaultValue(TRUE)
      ->setDisplayOptions('form', array(
        'type' => 'boolean_checkbox',
        'settings' => array(
          'display_label' => TRUE,
        ),
        'weight' => 15,
      ))
      ->setDisplayConfigurable('form', TRUE);

    $fields['sticky'] = BaseFieldDefinition::create('boolean')
      ->setLabel(t('Sticky'))
      ->setDescription(t('A boolean indicating whether the node should be displayed at the top of lists in which it appears.'))
      ->setRevisionable(TRUE)
      ->setTranslatable(TRUE)
      ->setDisplayOptions('form', array(
        'type' => 'boolean_checkbox',
        'settings' => array(
          'display_label' => TRUE,
        ),
        'weight' => 16,
      ))
      ->setDisplayConfigurable('form', TRUE);

    $fields['revision_timestamp'] = BaseFieldDefinition::create('created')
      ->setLabel(t('Revision timestamp'))
      ->setDescription(t('The time that the current revision was created.'))
      ->setQueryable(FALSE)
      ->setRevisionable(TRUE);

    $fields['revision_uid'] = BaseFieldDefinition::create('entity_reference')
      ->setLabel(t('Revision user ID'))
      ->setDescription(t('The user ID of the author of the current revision.'))
      ->setSetting('target_type', 'user')
      ->setQueryable(FALSE)
      ->setRevisionable(TRUE);

    $fields['revision_log'] = BaseFieldDefinition::create('string_long')
      ->setLabel(t('Revision log message'))
      ->setDescription(t('Briefly describe the changes you have made.'))
      ->setRevisionable(TRUE)
      ->setTranslatable(TRUE)
      ->setDisplayOptions('form', array(
        'type' => 'string_textarea',
        'weight' => 25,
        'settings' => array(
          'rows' => 4,
        ),
      ));

    return $fields;
  }

  /**
   * Default value callback for 'uid' base field definition.
   *
   * @see ::baseFieldDefinitions()
   *
   * @return array
   *   An array of default values.
   */
  public static function getCurrentUserId() {
    return array(\Drupal::currentUser()->id());
  }

}