587 lines
23 KiB
Plaintext
587 lines
23 KiB
Plaintext
<?php
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/**
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* @file
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* Enables the organization of content into categories.
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*/
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use Drupal\Component\Utility\Tags;
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use Drupal\Component\Utility\Unicode;
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use Drupal\Core\Entity\EntityInterface;
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use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
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use Drupal\Core\Render\Element;
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use Drupal\Core\Routing\RouteMatchInterface;
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use Drupal\Core\Url;
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use Drupal\taxonomy\Entity\Term;
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use Drupal\taxonomy\Entity\Vocabulary;
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use Drupal\taxonomy\TermInterface;
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use Drupal\taxonomy\VocabularyInterface;
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/**
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* Denotes that no term in the vocabulary has a parent.
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*
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* @deprecated in Drupal 8.2.x and will be removed before 9.0.0. Use
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* \Drupal\taxonomy\VocabularyInterface::HIERARCHY_DISABLED instead.
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*/
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const TAXONOMY_HIERARCHY_DISABLED = 0;
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/**
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* Denotes that one or more terms in the vocabulary has a single parent.
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*
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* @deprecated in Drupal 8.2.x and will be removed before 9.0.0. Use
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* \Drupal\taxonomy\VocabularyInterface::HIERARCHY_SINGLE instead.
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*/
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const TAXONOMY_HIERARCHY_SINGLE = 1;
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/**
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* Denotes that one or more terms in the vocabulary have multiple parents.
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*
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* @deprecated in Drupal 8.2.x and will be removed before 9.0.0. Use
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* \Drupal\taxonomy\VocabularyInterface::HIERARCHY_MULTIPLE instead.
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*/
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const TAXONOMY_HIERARCHY_MULTIPLE = 2;
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/**
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* Implements hook_help().
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*/
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function taxonomy_help($route_name, RouteMatchInterface $route_match) {
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switch ($route_name) {
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case 'help.page.taxonomy':
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$field_ui_url = \Drupal::moduleHandler()->moduleExists('field_ui') ? \Drupal::url('help.page', ['name' => 'field_ui']) : '#';
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$output = '';
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$output .= '<h3>' . t('About') . '</h3>';
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$output .= '<p>' . t('The Taxonomy module allows users who have permission to create and edit content to categorize (tag) content of that type. Users who have the <em>Administer vocabularies and terms</em> <a href=":permissions" title="Taxonomy module permissions">permission</a> can add <em>vocabularies</em> that contain a set of related <em>terms</em>. The terms in a vocabulary can either be pre-set by an administrator or built gradually as content is added and edited. Terms may be organized hierarchically if desired.', [':permissions' => \Drupal::url('user.admin_permissions', [], ['fragment' => 'module-taxonomy'])]) . '</p>';
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$output .= '<p>' . t('For more information, see the <a href=":taxonomy">online documentation for the Taxonomy module</a>.', [':taxonomy' => 'https://www.drupal.org/documentation/modules/taxonomy/']) . '</p>';
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$output .= '<h3>' . t('Uses') . '</h3>';
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$output .= '<dl>';
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$output .= '<dt>' . t('Managing vocabularies') . '</dt>';
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$output .= '<dd>' . t('Users who have the <em>Administer vocabularies and terms</em> permission can add and edit vocabularies from the <a href=":taxonomy_admin">Taxonomy administration page</a>. Vocabularies can be deleted from their <em>Edit vocabulary</em> page. Users with the <em>Taxonomy term: Administer fields</em> permission may add additional fields for terms in that vocabulary using the <a href=":field_ui">Field UI module</a>.', [':taxonomy_admin' => \Drupal::url('entity.taxonomy_vocabulary.collection'), ':field_ui' => $field_ui_url]) . '</dd>';
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$output .= '<dt>' . t('Managing terms') . '</dt>';
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$output .= '<dd>' . t('Users who have the <em>Administer vocabularies and terms</em> permission or the <em>Edit terms</em> permission for a particular vocabulary can add, edit, and organize the terms in a vocabulary from a vocabulary\'s term listing page, which can be accessed by going to the <a href=":taxonomy_admin">Taxonomy administration page</a> and clicking <em>List terms</em> in the <em>Operations</em> column. Users must have the <em>Administer vocabularies and terms</em> permission or the <em>Delete terms</em> permission for a particular vocabulary to delete terms.', [':taxonomy_admin' => \Drupal::url('entity.taxonomy_vocabulary.collection')]) . ' </dd>';
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$output .= '<dt>' . t('Classifying entity content') . '</dt>';
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$output .= '<dd>' . t('A user with the <em>Administer fields</em> permission for a certain entity type may add <em>Taxonomy term</em> reference fields to the entity type, which will allow entities to be classified using taxonomy terms. See the <a href=":entity_reference">Entity Reference help</a> for more information about reference fields. See the <a href=":field">Field module help</a> and the <a href=":field_ui">Field UI help</a> pages for general information on fields and how to create and manage them.', [':field_ui' => $field_ui_url, ':field' => \Drupal::url('help.page', ['name' => 'field']), ':entity_reference' => \Drupal::url('help.page', ['name' => 'entity_reference'])]) . '</dd>';
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$output .= '<dt>' . t('Adding new terms during content creation') . '</dt>';
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$output .= '<dd>' . t('Allowing users to add new terms gradually builds a vocabulary as content is added and edited. Users can add new terms if either of the two <em>Autocomplete</em> widgets is chosen for the Taxonomy term reference field in the <em>Manage form display</em> page for the field. You will also need to enable the <em>Create referenced entities if they don\'t already exist</em> option, and restrict the field to one vocabulary.') . '</dd>';
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$output .= '<dt>' . t('Configuring displays and form displays') . '</dt>';
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$output .= '<dd>' . t('See the <a href=":entity_reference">Entity Reference help</a> page for the field widgets and formatters that can be configured for any reference field on the <em>Manage display</em> and <em>Manage form display</em> pages. Taxonomy additionally provides an <em>RSS category</em> formatter that displays nothing when the entity item is displayed as HTML, but displays an RSS category instead of a list when the entity item is displayed in an RSS feed.', [':entity_reference' => \Drupal::url('help.page', ['name' => 'entity_reference'])]) . '</li>';
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$output .= '</ul>';
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$output .= '</dd>';
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$output .= '</dl>';
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return $output;
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case 'entity.taxonomy_vocabulary.collection':
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$output = '<p>' . t('Taxonomy is for categorizing content. Terms are grouped into vocabularies. For example, a vocabulary called "Fruit" would contain the terms "Apple" and "Banana".') . '</p>';
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return $output;
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case 'entity.taxonomy_vocabulary.overview_form':
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$vocabulary = $route_match->getParameter('taxonomy_vocabulary');
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switch ($vocabulary->getHierarchy()) {
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case VocabularyInterface::HIERARCHY_DISABLED:
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return '<p>' . t('You can reorganize the terms in %capital_name using their drag-and-drop handles, and group terms under a parent term by sliding them under and to the right of the parent.', ['%capital_name' => Unicode::ucfirst($vocabulary->label()), '%name' => $vocabulary->label()]) . '</p>';
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case VocabularyInterface::HIERARCHY_SINGLE:
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return '<p>' . t('%capital_name contains terms grouped under parent terms. You can reorganize the terms in %capital_name using their drag-and-drop handles.', ['%capital_name' => Unicode::ucfirst($vocabulary->label()), '%name' => $vocabulary->label()]) . '</p>';
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case VocabularyInterface::HIERARCHY_MULTIPLE:
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return '<p>' . t('%capital_name contains terms with multiple parents. Drag and drop of terms with multiple parents is not supported, but you can re-enable drag-and-drop support by editing each term to include only a single parent.', ['%capital_name' => Unicode::ucfirst($vocabulary->label())]) . '</p>';
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}
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}
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}
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/**
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* Entity URI callback.
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*/
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function taxonomy_term_uri($term) {
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return new Url('entity.taxonomy_term.canonical', [
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'taxonomy_term' => $term->id(),
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]);
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}
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/**
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* Implements hook_page_attachments_alter().
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*/
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function taxonomy_page_attachments_alter(array &$page) {
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$route_match = \Drupal::routeMatch();
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if ($route_match->getRouteName() == 'entity.taxonomy_term.canonical' && ($term = $route_match->getParameter('taxonomy_term')) && $term instanceof TermInterface) {
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foreach ($term->uriRelationships() as $rel) {
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// Set the URI relationships, like canonical.
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$page['#attached']['html_head_link'][] = [
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[
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'rel' => $rel,
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'href' => $term->url($rel),
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],
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TRUE,
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];
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// Set the term path as the canonical URL to prevent duplicate content.
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if ($rel == 'canonical') {
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// Set the non-aliased canonical path as a default shortlink.
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$page['#attached']['html_head_link'][] = [
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[
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'rel' => 'shortlink',
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'href' => $term->url($rel, ['alias' => TRUE]),
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],
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TRUE,
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];
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}
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}
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}
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}
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/**
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* Implements hook_theme().
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*/
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function taxonomy_theme() {
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return [
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'taxonomy_term' => [
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'render element' => 'elements',
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],
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];
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}
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/**
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* Checks and updates the hierarchy flag of a vocabulary.
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*
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* Checks the current parents of all terms in a vocabulary and updates the
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* vocabulary's hierarchy setting to the lowest possible level. If no term
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* has parent terms then the vocabulary will be given a hierarchy of
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* VocabularyInterface::HIERARCHY_DISABLED. If any term has a single parent then
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* the vocabulary will be given a hierarchy of
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* VocabularyInterface::HIERARCHY_SINGLE. If any term has multiple parents then
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* the vocabulary will be given a hierarchy of
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* VocabularyInterface::HIERARCHY_MULTIPLE.
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*
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* @param \Drupal\taxonomy\VocabularyInterface $vocabulary
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* A taxonomy vocabulary entity.
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* @param $changed_term
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* An array of the term structure that was updated.
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*
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* @return
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* An integer that represents the level of the vocabulary's hierarchy.
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*/
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function taxonomy_check_vocabulary_hierarchy(VocabularyInterface $vocabulary, $changed_term) {
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$tree = \Drupal::entityManager()->getStorage('taxonomy_term')->loadTree($vocabulary->id());
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$hierarchy = VocabularyInterface::HIERARCHY_DISABLED;
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foreach ($tree as $term) {
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// Update the changed term with the new parent value before comparison.
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if ($term->tid == $changed_term['tid']) {
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$term = (object) $changed_term;
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$term->parents = $term->parent;
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}
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// Check this term's parent count.
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if (count($term->parents) > 1) {
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$hierarchy = VocabularyInterface::HIERARCHY_MULTIPLE;
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break;
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}
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elseif (count($term->parents) == 1 && !isset($term->parents[0])) {
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$hierarchy = VocabularyInterface::HIERARCHY_SINGLE;
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}
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}
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if ($hierarchy != $vocabulary->getHierarchy()) {
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$vocabulary->setHierarchy($hierarchy);
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$vocabulary->save();
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}
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return $hierarchy;
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}
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/**
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* Generates an array which displays a term detail page.
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*
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* @param \Drupal\taxonomy\Entity\Term $term
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* A taxonomy term object.
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* @param string $view_mode
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* View mode; e.g., 'full', 'teaser', etc.
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* @param string $langcode
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* (optional) A language code to use for rendering. Defaults to the global
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* content language of the current request.
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*
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* @return array
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* A $page element suitable for use by drupal_render().
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*/
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function taxonomy_term_view(Term $term, $view_mode = 'full', $langcode = NULL) {
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return entity_view($term, $view_mode, $langcode);
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}
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/**
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* Constructs a drupal_render() style array from an array of loaded terms.
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*
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* @param array $terms
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* An array of taxonomy terms as returned by Term::loadMultiple().
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* @param string $view_mode
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* View mode; e.g., 'full', 'teaser', etc.
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* @param string $langcode
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* (optional) A language code to use for rendering. Defaults to the global
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* content language of the current request.
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*
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* @return array
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* An array in the format expected by drupal_render().
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*/
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function taxonomy_term_view_multiple(array $terms, $view_mode = 'full', $langcode = NULL) {
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return entity_view_multiple($terms, $view_mode, $langcode);
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}
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/**
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* Implements hook_theme_suggestions_HOOK().
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*/
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function taxonomy_theme_suggestions_taxonomy_term(array $variables) {
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$suggestions = [];
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/** @var \Drupal\taxonomy\TermInterface $term */
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$term = $variables['elements']['#taxonomy_term'];
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$suggestions[] = 'taxonomy_term__' . $term->bundle();
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$suggestions[] = 'taxonomy_term__' . $term->id();
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return $suggestions;
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}
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/**
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* Prepares variables for taxonomy term templates.
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*
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* Default template: taxonomy-term.html.twig.
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*
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* @param array $variables
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* An associative array containing:
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* - elements: An associative array containing the taxonomy term and any
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* fields attached to the term. Properties used:
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* - #taxonomy_term: A \Drupal\taxonomy\TermInterface object.
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* - #view_mode: The current view mode for this taxonomy term, e.g.
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* 'full' or 'teaser'.
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* - attributes: HTML attributes for the containing element.
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*/
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function template_preprocess_taxonomy_term(&$variables) {
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$variables['view_mode'] = $variables['elements']['#view_mode'];
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$variables['term'] = $variables['elements']['#taxonomy_term'];
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/** @var \Drupal\taxonomy\TermInterface $term */
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$term = $variables['term'];
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$variables['url'] = $term->url();
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// We use name here because that is what appears in the UI.
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$variables['name'] = $variables['elements']['name'];
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unset($variables['elements']['name']);
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$variables['page'] = $variables['view_mode'] == 'full' && taxonomy_term_is_page($term);
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// Helpful $content variable for templates.
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$variables['content'] = [];
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foreach (Element::children($variables['elements']) as $key) {
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$variables['content'][$key] = $variables['elements'][$key];
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}
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}
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/**
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* Returns whether the current page is the page of the passed-in term.
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*
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* @param \Drupal\taxonomy\Entity\Term $term
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* A taxonomy term entity.
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*/
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function taxonomy_term_is_page(Term $term) {
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if (\Drupal::routeMatch()->getRouteName() == 'entity.taxonomy_term.canonical' && $page_term_id = \Drupal::routeMatch()->getRawParameter('taxonomy_term')) {
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return $page_term_id == $term->id();
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}
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return FALSE;
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}
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/**
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* Clear all static cache variables for terms.
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*/
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function taxonomy_terms_static_reset() {
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\Drupal::entityManager()->getStorage('taxonomy_term')->resetCache();
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}
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/**
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* Clear all static cache variables for vocabularies.
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*
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* @param $ids
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* An array of ids to reset in the entity cache.
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*/
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function taxonomy_vocabulary_static_reset(array $ids = NULL) {
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\Drupal::entityManager()->getStorage('taxonomy_vocabulary')->resetCache($ids);
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}
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/**
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* Get names for all taxonomy vocabularies.
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*
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* @return array
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* A list of existing vocabulary IDs.
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*/
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function taxonomy_vocabulary_get_names() {
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$names = &drupal_static(__FUNCTION__);
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if (!isset($names)) {
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$names = [];
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$config_names = \Drupal::configFactory()->listAll('taxonomy.vocabulary.');
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foreach ($config_names as $config_name) {
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$id = substr($config_name, strlen('taxonomy.vocabulary.'));
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$names[$id] = $id;
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}
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}
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return $names;
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}
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/**
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* Try to map a string to an existing term, as for glossary use.
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*
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* Provides a case-insensitive and trimmed mapping, to maximize the
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* likelihood of a successful match.
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*
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* @param $name
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* Name of the term to search for.
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* @param $vocabulary
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* (optional) Vocabulary machine name to limit the search. Defaults to NULL.
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*
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* @return
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* An array of matching term objects.
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*/
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function taxonomy_term_load_multiple_by_name($name, $vocabulary = NULL) {
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$values = ['name' => trim($name)];
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if (isset($vocabulary)) {
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$vocabularies = taxonomy_vocabulary_get_names();
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if (isset($vocabularies[$vocabulary])) {
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$values['vid'] = $vocabulary;
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}
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else {
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// Return an empty array when filtering by a non-existing vocabulary.
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return [];
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}
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}
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return entity_load_multiple_by_properties('taxonomy_term', $values);
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}
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/**
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* Load multiple taxonomy terms based on certain conditions.
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*
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* This function should be used whenever you need to load more than one term
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* from the database. Terms are loaded into memory and will not require
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* database access if loaded again during the same page request.
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*
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* @see entity_load_multiple()
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* @see \Drupal\Core\Entity\Query\EntityQueryInterface
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*
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* @deprecated in Drupal 8.x, will be removed before Drupal 9.0.
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* Use \Drupal\taxonomy\Entity\Term::loadMultiple().
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*
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* @param array $tids
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* (optional) An array of entity IDs. If omitted, all entities are loaded.
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*
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* @return array
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* An array of taxonomy term entities, indexed by tid. When no results are
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* found, an empty array is returned.
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*/
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function taxonomy_term_load_multiple(array $tids = NULL) {
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return Term::loadMultiple($tids);
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}
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/**
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* Loads multiple taxonomy vocabularies based on certain conditions.
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*
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* This function should be used whenever you need to load more than one
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* vocabulary from the database. Terms are loaded into memory and will not
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* require database access if loaded again during the same page request.
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*
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* @see entity_load_multiple()
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*
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* @deprecated in Drupal 8.x, will be removed before Drupal 9.0.
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* Use \Drupal\taxonomy\Entity\Vocabulary::loadMultiple().
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*
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* @param array $vids
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* (optional) An array of entity IDs. If omitted, all entities are loaded.
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*
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* @return array
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* An array of vocabulary objects, indexed by vid.
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*/
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function taxonomy_vocabulary_load_multiple(array $vids = NULL) {
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return Vocabulary::loadMultiple($vids);
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}
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/**
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* Return the taxonomy vocabulary entity matching a vocabulary ID.
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*
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* @deprecated in Drupal 8.x, will be removed before Drupal 9.0.
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* Use \Drupal\taxonomy\Entity\Vocabulary::load().
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*
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* @param int $vid
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* The vocabulary's ID.
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*
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* @return \Drupal\taxonomy\Entity\Vocabulary|null
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* The taxonomy vocabulary entity, if exists, NULL otherwise. Results are
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* statically cached.
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*/
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function taxonomy_vocabulary_load($vid) {
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return Vocabulary::load($vid);
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}
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/**
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* Return the taxonomy term entity matching a term ID.
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*
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* @deprecated in Drupal 8.x, will be removed before Drupal 9.0.
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* Use \Drupal\taxonomy\Entity\Term::load().
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*
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* @param $tid
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* A term's ID
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*
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* @return \Drupal\taxonomy\Entity\Term|null
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* A taxonomy term entity, or NULL if the term was not found. Results are
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* statically cached.
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*/
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function taxonomy_term_load($tid) {
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if (!is_numeric($tid)) {
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|
return NULL;
|
|
}
|
|
return Term::load($tid);
|
|
}
|
|
|
|
/**
|
|
* Implodes a list of tags of a certain vocabulary into a string.
|
|
*
|
|
* @see \Drupal\Component\Utility\Tags::explode()
|
|
*/
|
|
function taxonomy_implode_tags($tags, $vid = NULL) {
|
|
$typed_tags = [];
|
|
foreach ($tags as $tag) {
|
|
// Extract terms belonging to the vocabulary in question.
|
|
if (!isset($vid) || $tag->bundle() == $vid) {
|
|
// Make sure we have a completed loaded taxonomy term.
|
|
if ($tag instanceof EntityInterface && $label = $tag->label()) {
|
|
// Commas and quotes in tag names are special cases, so encode 'em.
|
|
$typed_tags[] = Tags::encode($label);
|
|
}
|
|
}
|
|
}
|
|
return implode(', ', $typed_tags);
|
|
}
|
|
|
|
/**
|
|
* Title callback for term pages.
|
|
*
|
|
* @param \Drupal\taxonomy\Entity\Term $term
|
|
* A taxonomy term entity.
|
|
*
|
|
* @return
|
|
* The term name to be used as the page title.
|
|
*/
|
|
function taxonomy_term_title(Term $term) {
|
|
return $term->getName();
|
|
}
|
|
|
|
/**
|
|
* @defgroup taxonomy_index Taxonomy indexing
|
|
* @{
|
|
* Functions to maintain taxonomy indexing.
|
|
*
|
|
* Taxonomy uses default field storage to store canonical relationships
|
|
* between terms and fieldable entities. However its most common use case
|
|
* requires listing all content associated with a term or group of terms
|
|
* sorted by creation date. To avoid slow queries due to joining across
|
|
* multiple node and field tables with various conditions and order by criteria,
|
|
* we maintain a denormalized table with all relationships between terms,
|
|
* published nodes and common sort criteria such as status, sticky and created.
|
|
* When using other field storage engines or alternative methods of
|
|
* denormalizing this data you should set the
|
|
* taxonomy.settings:maintain_index_table to '0' to avoid unnecessary writes in
|
|
* SQL.
|
|
*/
|
|
|
|
/**
|
|
* Implements hook_ENTITY_TYPE_insert() for node entities.
|
|
*/
|
|
function taxonomy_node_insert(EntityInterface $node) {
|
|
// Add taxonomy index entries for the node.
|
|
taxonomy_build_node_index($node);
|
|
}
|
|
|
|
/**
|
|
* Builds and inserts taxonomy index entries for a given node.
|
|
*
|
|
* The index lists all terms that are related to a given node entity, and is
|
|
* therefore maintained at the entity level.
|
|
*
|
|
* @param \Drupal\node\Entity\Node $node
|
|
* The node entity.
|
|
*/
|
|
function taxonomy_build_node_index($node) {
|
|
// We maintain a denormalized table of term/node relationships, containing
|
|
// only data for current, published nodes.
|
|
if (!\Drupal::config('taxonomy.settings')->get('maintain_index_table') || !(\Drupal::entityManager()->getStorage('node') instanceof SqlContentEntityStorage)) {
|
|
return;
|
|
}
|
|
|
|
$status = $node->isPublished();
|
|
$sticky = (int) $node->isSticky();
|
|
// We only maintain the taxonomy index for published nodes.
|
|
if ($status && $node->isDefaultRevision()) {
|
|
// Collect a unique list of all the term IDs from all node fields.
|
|
$tid_all = [];
|
|
$entity_reference_class = 'Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem';
|
|
foreach ($node->getFieldDefinitions() as $field) {
|
|
$field_name = $field->getName();
|
|
$class = $field->getItemDefinition()->getClass();
|
|
$is_entity_reference_class = ($class === $entity_reference_class) || is_subclass_of($class, $entity_reference_class);
|
|
if ($is_entity_reference_class && $field->getSetting('target_type') == 'taxonomy_term') {
|
|
foreach ($node->getTranslationLanguages() as $language) {
|
|
foreach ($node->getTranslation($language->getId())->$field_name as $item) {
|
|
if (!$item->isEmpty()) {
|
|
$tid_all[$item->target_id] = $item->target_id;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Insert index entries for all the node's terms.
|
|
if (!empty($tid_all)) {
|
|
foreach ($tid_all as $tid) {
|
|
db_merge('taxonomy_index')
|
|
->key(['nid' => $node->id(), 'tid' => $tid, 'status' => $node->isPublished()])
|
|
->fields(['sticky' => $sticky, 'created' => $node->getCreatedTime()])
|
|
->execute();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Implements hook_ENTITY_TYPE_update() for node entities.
|
|
*/
|
|
function taxonomy_node_update(EntityInterface $node) {
|
|
// If we're not dealing with the default revision of the node, do not make any
|
|
// change to the taxonomy index.
|
|
if (!$node->isDefaultRevision()) {
|
|
return;
|
|
}
|
|
taxonomy_delete_node_index($node);
|
|
taxonomy_build_node_index($node);
|
|
}
|
|
|
|
/**
|
|
* Implements hook_ENTITY_TYPE_predelete() for node entities.
|
|
*/
|
|
function taxonomy_node_predelete(EntityInterface $node) {
|
|
// Clean up the {taxonomy_index} table when nodes are deleted.
|
|
taxonomy_delete_node_index($node);
|
|
}
|
|
|
|
/**
|
|
* Deletes taxonomy index entries for a given node.
|
|
*
|
|
* @param \Drupal\Core\Entity\EntityInterface $node
|
|
* The node entity.
|
|
*/
|
|
function taxonomy_delete_node_index(EntityInterface $node) {
|
|
if (\Drupal::config('taxonomy.settings')->get('maintain_index_table')) {
|
|
db_delete('taxonomy_index')->condition('nid', $node->id())->execute();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Implements hook_ENTITY_TYPE_delete() for taxonomy_term entities.
|
|
*/
|
|
function taxonomy_taxonomy_term_delete(Term $term) {
|
|
if (\Drupal::config('taxonomy.settings')->get('maintain_index_table')) {
|
|
// Clean up the {taxonomy_index} table when terms are deleted.
|
|
db_delete('taxonomy_index')->condition('tid', $term->id())->execute();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @} End of "defgroup taxonomy_index".
|
|
*/
|