class views_handler_field_term_node_tid

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] : '';
        }
    }

}