--- /dev/null
+<?php
+
+namespace Drupal\taxonomy;
+
+use Drupal\views\EntityViewsData;
+
+/**
+ * Provides the views data for the taxonomy entity type.
+ */
+class TermViewsData extends EntityViewsData {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getViewsData() {
+ $data = parent::getViewsData();
+
+ $data['taxonomy_term_field_data']['table']['base']['help'] = $this->t('Taxonomy terms are attached to nodes.');
+ $data['taxonomy_term_field_data']['table']['base']['access query tag'] = 'taxonomy_term_access';
+ $data['taxonomy_term_field_data']['table']['wizard_id'] = 'taxonomy_term';
+
+ $data['taxonomy_term_field_data']['table']['join'] = [
+ // This is provided for the many_to_one argument.
+ 'taxonomy_index' => [
+ 'field' => 'tid',
+ 'left_field' => 'tid',
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['tid']['help'] = $this->t('The tid of a taxonomy term.');
+
+ $data['taxonomy_term_field_data']['tid']['argument']['id'] = 'taxonomy';
+ $data['taxonomy_term_field_data']['tid']['argument']['name field'] = 'name';
+ $data['taxonomy_term_field_data']['tid']['argument']['zero is null'] = TRUE;
+
+ $data['taxonomy_term_field_data']['tid']['filter']['id'] = 'taxonomy_index_tid';
+ $data['taxonomy_term_field_data']['tid']['filter']['title'] = $this->t('Term');
+ $data['taxonomy_term_field_data']['tid']['filter']['help'] = $this->t('Taxonomy term chosen from autocomplete or select widget.');
+ $data['taxonomy_term_field_data']['tid']['filter']['hierarchy table'] = 'taxonomy_term_hierarchy';
+ $data['taxonomy_term_field_data']['tid']['filter']['numeric'] = TRUE;
+
+ $data['taxonomy_term_field_data']['tid_raw'] = [
+ 'title' => $this->t('Term ID'),
+ 'help' => $this->t('The tid of a taxonomy term.'),
+ 'real field' => 'tid',
+ 'filter' => [
+ 'id' => 'numeric',
+ 'allow empty' => TRUE,
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['tid_representative'] = [
+ 'relationship' => [
+ 'title' => $this->t('Representative node'),
+ 'label' => $this->t('Representative node'),
+ 'help' => $this->t('Obtains a single representative node for each term, according to a chosen sort criterion.'),
+ 'id' => 'groupwise_max',
+ 'relationship field' => 'tid',
+ 'outer field' => 'taxonomy_term_field_data.tid',
+ 'argument table' => 'taxonomy_term_field_data',
+ 'argument field' => 'tid',
+ 'base' => 'node_field_data',
+ 'field' => 'nid',
+ 'relationship' => 'node_field_data:term_node_tid'
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['vid']['help'] = $this->t('Filter the results of "Taxonomy: Term" to a particular vocabulary.');
+ unset($data['taxonomy_term_field_data']['vid']['field']);
+ $data['taxonomy_term_field_data']['vid']['argument']['id'] = 'vocabulary_vid';
+ unset($data['taxonomy_term_field_data']['vid']['sort']);
+
+ $data['taxonomy_term_field_data']['name']['field']['id'] = 'term_name';
+ $data['taxonomy_term_field_data']['name']['argument']['many to one'] = TRUE;
+ $data['taxonomy_term_field_data']['name']['argument']['empty field name'] = $this->t('Uncategorized');
+
+ $data['taxonomy_term_field_data']['description__value']['field']['click sortable'] = FALSE;
+
+ $data['taxonomy_term_field_data']['changed']['title'] = $this->t('Updated date');
+ $data['taxonomy_term_field_data']['changed']['help'] = $this->t('The date the term was last updated.');
+
+ $data['taxonomy_term_field_data']['changed_fulldate'] = [
+ 'title' => $this->t('Updated date'),
+ 'help' => $this->t('Date in the form of CCYYMMDD.'),
+ 'argument' => [
+ 'field' => 'changed',
+ 'id' => 'date_fulldate',
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['changed_year_month'] = [
+ 'title' => $this->t('Updated year + month'),
+ 'help' => $this->t('Date in the form of YYYYMM.'),
+ 'argument' => [
+ 'field' => 'changed',
+ 'id' => 'date_year_month',
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['changed_year'] = [
+ 'title' => $this->t('Updated year'),
+ 'help' => $this->t('Date in the form of YYYY.'),
+ 'argument' => [
+ 'field' => 'changed',
+ 'id' => 'date_year',
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['changed_month'] = [
+ 'title' => $this->t('Updated month'),
+ 'help' => $this->t('Date in the form of MM (01 - 12).'),
+ 'argument' => [
+ 'field' => 'changed',
+ 'id' => 'date_month',
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['changed_day'] = [
+ 'title' => $this->t('Updated day'),
+ 'help' => $this->t('Date in the form of DD (01 - 31).'),
+ 'argument' => [
+ 'field' => 'changed',
+ 'id' => 'date_day',
+ ],
+ ];
+
+ $data['taxonomy_term_field_data']['changed_week'] = [
+ 'title' => $this->t('Updated week'),
+ 'help' => $this->t('Date in the form of WW (01 - 53).'),
+ 'argument' => [
+ 'field' => 'changed',
+ 'id' => 'date_week',
+ ],
+ ];
+
+ $data['taxonomy_index']['table']['group'] = $this->t('Taxonomy term');
+
+ $data['taxonomy_index']['table']['join'] = [
+ 'taxonomy_term_field_data' => [
+ // links directly to taxonomy_term_field_data via tid
+ 'left_field' => 'tid',
+ 'field' => 'tid',
+ ],
+ 'node_field_data' => [
+ // links directly to node via nid
+ 'left_field' => 'nid',
+ 'field' => 'nid',
+ ],
+ 'taxonomy_term_hierarchy' => [
+ 'left_field' => 'tid',
+ 'field' => 'tid',
+ ],
+ ];
+
+ $data['taxonomy_index']['nid'] = [
+ 'title' => $this->t('Content with term'),
+ 'help' => $this->t('Relate all content tagged with a term.'),
+ 'relationship' => [
+ 'id' => 'standard',
+ 'base' => 'node',
+ 'base field' => 'nid',
+ 'label' => $this->t('node'),
+ 'skip base' => 'node',
+ ],
+ ];
+
+ // @todo This stuff needs to move to a node field since really it's all
+ // about nodes.
+ $data['taxonomy_index']['tid'] = [
+ 'group' => $this->t('Content'),
+ 'title' => $this->t('Has taxonomy term ID'),
+ 'help' => $this->t('Display content if it has the selected taxonomy terms.'),
+ 'argument' => [
+ 'id' => 'taxonomy_index_tid',
+ 'name table' => 'taxonomy_term_field_data',
+ 'name field' => 'name',
+ 'empty field name' => $this->t('Uncategorized'),
+ 'numeric' => TRUE,
+ 'skip base' => 'taxonomy_term_field_data',
+ ],
+ 'filter' => [
+ 'title' => $this->t('Has taxonomy term'),
+ 'id' => 'taxonomy_index_tid',
+ 'hierarchy table' => 'taxonomy_term_hierarchy',
+ 'numeric' => TRUE,
+ 'skip base' => 'taxonomy_term_field_data',
+ 'allow empty' => TRUE,
+ ],
+ ];
+
+ $data['taxonomy_index']['status'] = [
+ 'title' => $this->t('Publish status'),
+ 'help' => $this->t('Whether or not the content related to a term is published.'),
+ 'filter' => [
+ 'id' => 'boolean',
+ 'label' => $this->t('Published status'),
+ 'type' => 'yes-no',
+ ],
+ ];
+
+ $data['taxonomy_index']['sticky'] = [
+ 'title' => $this->t('Sticky status'),
+ 'help' => $this->t('Whether or not the content related to a term is sticky.'),
+ 'filter' => [
+ 'id' => 'boolean',
+ 'label' => $this->t('Sticky status'),
+ 'type' => 'yes-no',
+ ],
+ 'sort' => [
+ 'id' => 'standard',
+ 'help' => $this->t('Whether or not the content related to a term is sticky. To list sticky content first, set this to descending.'),
+ ],
+ ];
+
+ $data['taxonomy_index']['created'] = [
+ 'title' => $this->t('Post date'),
+ 'help' => $this->t('The date the content related to a term was posted.'),
+ 'sort' => [
+ 'id' => 'date'
+ ],
+ 'filter' => [
+ 'id' => 'date',
+ ],
+ ];
+
+ $data['taxonomy_term_hierarchy']['table']['group'] = $this->t('Taxonomy term');
+ $data['taxonomy_term_hierarchy']['table']['provider'] = 'taxonomy';
+
+ $data['taxonomy_term_hierarchy']['table']['join'] = [
+ 'taxonomy_term_hierarchy' => [
+ // Link to self through left.parent = right.tid (going down in depth).
+ 'left_field' => 'tid',
+ 'field' => 'parent',
+ ],
+ 'taxonomy_term_field_data' => [
+ // Link directly to taxonomy_term_field_data via tid.
+ 'left_field' => 'tid',
+ 'field' => 'tid',
+ ],
+ ];
+
+ $data['taxonomy_term_hierarchy']['parent'] = [
+ 'title' => $this->t('Parent term'),
+ 'help' => $this->t('The parent term of the term. This can produce duplicate entries if you are using a vocabulary that allows multiple parents.'),
+ 'relationship' => [
+ 'base' => 'taxonomy_term_field_data',
+ 'field' => 'parent',
+ 'label' => $this->t('Parent'),
+ 'id' => 'standard',
+ ],
+ 'filter' => [
+ 'help' => $this->t('Filter the results of "Taxonomy: Term" by the parent pid.'),
+ 'id' => 'numeric',
+ ],
+ 'argument' => [
+ 'help' => $this->t('The parent term of the term.'),
+ 'id' => 'taxonomy',
+ ],
+ ];
+
+ return $data;
+ }
+
+}