Club Drupal

<?php

/**

 * @file

 * Definition of views_handler_field_term_node_tid.

 */

/**

 * Field handler to display all taxonomy terms of a node.

 *

 * @ingroup views_field_handlers

 */

class views_handler_field_term_node_tid extends views_handler_field_prerender_list {

  /**

   * {@inheritdoc}

   */

  public function init(&$view, &$options) {

    parent::init($view, $options);

    // @todo Wouldn't it be possible to use $this->base_table and no if here?

    if ($view->base_table == 'node_revision') {

      $this->additional_fields['nid'] = array('table' => 'node_revision', 'field' => 'nid');

    }

    else {

      $this->additional_fields['nid'] = array('table' => 'node', 'field' => 'nid');

    }

    // Convert legacy vids option to machine name vocabularies.

    if (!empty($this->options['vids'])) {

      $vocabularies = taxonomy_get_vocabularies();

      foreach ($this->options['vids'] as $vid) {

        if (isset($vocabularies[$vid], $vocabularies[$vid]->machine_name)) {

          $this->options['vocabularies'][$vocabularies[$vid]->machine_name] = $vocabularies[$vid]->machine_name;

        }

      }

    }

  }

  /**

   * {@inheritdoc}

   */

  public function option_definition() {

    $options = parent::option_definition();

    $options['link_to_taxonomy'] = array('default' => TRUE, 'bool' => TRUE);

    $options['limit'] = array('default' => FALSE, 'bool' => TRUE);

    $options['vocabularies'] = array('default' => array());

    return $options;

  }

  /**

   * Provide "link to term" option.

   */

  public function options_form(&$form, &$form_state) {

    $form['link_to_taxonomy'] = array(

      '#title' => t('Link this field to its term page'),

      '#type' => 'checkbox',

      '#default_value' => !empty($this->options['link_to_taxonomy']),

    );

    $form['limit'] = array(

      '#type' => 'checkbox',

      '#title' => t('Limit terms by vocabulary'),

      '#default_value' => $this->options['limit'],

    );

    $options = array();

    $vocabularies = taxonomy_get_vocabularies();

    foreach ($vocabularies as $voc) {

      $options[$voc->machine_name] = check_plain($voc->name);

    }

    $form['vocabularies'] = array(

      '#prefix' => '<div><div id="edit-options-vocabularies">',

      '#suffix' => '</div></div>',

      '#type' => 'checkboxes',

      '#title' => t('Vocabularies'),

      '#options' => $options,

      '#default_value' => $this->options['vocabularies'],

      '#dependency' => array('edit-options-limit' => array(TRUE)),

    );

    parent::options_form($form, $form_state);

  }

  /**

   * Add this term to the query.

   */

  public function query() {

    $this->add_additional_fields();

  }

  /**

   * {@inheritdoc}

   */

  public function pre_render(&$values) {

    $this->field_alias = $this->aliases['nid'];

    $nids = array();

    foreach ($values as $result) {

      if (!empty($result->{$this->aliases['nid']})) {

        $nids[] = $result->{$this->aliases['nid']};

      }

    }

    if ($nids) {

      $query = db_select('taxonomy_term_data', 'td');

      $query->innerJoin('taxonomy_index', 'tn', 'td.tid = tn.tid');

      $query->innerJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

      $query->fields('td');

      $query->addField('tn', 'nid', 'node_nid');

      $query->addField('tv', 'name', 'vocabulary');

      $query->addField('tv', 'machine_name', 'vocabulary_machine_name');

      $query->orderby('td.weight');

      $query->orderby('td.name');

      $query->condition('tn.nid', $nids);

      $query->addTag('taxonomy_term_access');

      $vocabs = array_filter($this->options['vocabularies']);

      if (!empty($this->options['limit']) && !empty($vocabs)) {

        $query->condition('tv.machine_name', $vocabs);

      }

      $result = $query->execute();

      foreach ($result as $term) {

        $this->items[$term->node_nid][$term->tid]['name'] = check_plain($term->name);

        $this->items[$term->node_nid][$term->tid]['tid'] = $term->tid;

        $this->items[$term->node_nid][$term->tid]['vocabulary_machine_name'] = check_plain($term->vocabulary_machine_name);

        $this->items[$term->node_nid][$term->tid]['vocabulary'] = check_plain($term->vocabulary);

        if (!empty($this->options['link_to_taxonomy'])) {

          $this->items[$term->node_nid][$term->tid]['make_link'] = TRUE;

          $this->items[$term->node_nid][$term->tid]['path'] = 'taxonomy/term/' . $term->tid;

        }

      }

    }

  }

  /**

   * {@inheritdoc}

   */

  public function render_item($count, $item) {

    return $item['name'];

  }

  /**

   * {@inheritdoc}

   */

  public function document_self_tokens(&$tokens) {

    $tokens['[' . $this->options['id'] . '-tid' . ']'] = t('The taxonomy term ID for the term.');

    $tokens['[' . $this->options['id'] . '-name' . ']'] = t('The taxonomy term name for the term.');

    $tokens['[' . $this->options['id'] . '-vocabulary-machine-name' . ']'] = t('The machine name for the vocabulary the term belongs to.');

    $tokens['[' . $this->options['id'] . '-vocabulary' . ']'] = t('The name for the vocabulary the term belongs to.');

  }

  /**

   * {@inheritdoc}

   */

  public function add_self_tokens(&$tokens, $item) {

    foreach (array('tid', 'name', 'vocabulary_machine_name', 'vocabulary') as $token) {

      // Replace _ with - for the vocabulary machine name.

      $tokens['[' . $this->options['id'] . '-' . str_replace('_', '-', $token) . ']'] = isset($item[$token]) ? $item[$token] : '';

    }

  }

}