views_handler_field_node_new_comments.inc

<?php


/**
 * @file
 * Definition of views_handler_field_node_new_comments.
 */

/**
 * Field handler to display the number of new comments.
 *
 * @ingroup views_field_handlers
 */
class views_handler_field_node_new_comments extends views_handler_field_numeric {
    
    /**
     * {@inheritdoc}
     */
    public function init(&$view, &$options) {
        parent::init($view, $options);
        // Translate an older setting.
        if (!empty($options['no_empty'])) {
            $this->options['hide_empty'] = TRUE;
            unset($this->options['no_empty']);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function construct() {
        parent::construct();
        $this->additional_fields['nid'] = 'nid';
        $this->additional_fields['type'] = 'type';
        $this->additional_fields['comment_count'] = array(
            'table' => 'node_comment_statistics',
            'field' => 'comment_count',
        );
    }
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['link_to_comment'] = array(
            'default' => TRUE,
            'bool' => TRUE,
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        $form['link_to_comment'] = array(
            '#title' => t('Link this field to new comments'),
            '#description' => t("Enable to override this field's links."),
            '#type' => 'checkbox',
            '#default_value' => $this->options['link_to_comment'],
        );
        parent::options_form($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        $this->ensure_my_table();
        $this->add_additional_fields();
        $this->field_alias = $this->table . '_' . $this->field;
    }
    
    /**
     * {@inheritdoc}
     */
    public function pre_render(&$values) {
        global $user;
        if (!$user->uid || empty($values)) {
            return;
        }
        $nids = array();
        $ids = array();
        foreach ($values as $id => $result) {
            $nids[] = $result->{$this->aliases['nid']};
            $values[$id]->{$this->field_alias} = 0;
            // Create a reference so we can find this record in the values again.
            if (empty($ids[$result->{$this->aliases['nid']}])) {
                $ids[$result->{$this->aliases['nid']}] = array();
            }
            $ids[$result->{$this->aliases['nid']}][] = $id;
        }
        if ($nids) {
            $result = db_query("SELECT n.nid, COUNT(c.cid) as num_comments FROM {node} n INNER JOIN {comment} c ON n.nid = c.nid\n        LEFT JOIN {history} h ON h.nid = n.nid AND h.uid = :h_uid WHERE n.nid IN (:nids)\n        AND c.changed > GREATEST(COALESCE(h.timestamp, :timestamp), :timestamp) AND c.status = :status GROUP BY n.nid  ", array(
                ':status' => COMMENT_PUBLISHED,
                ':h_uid' => $user->uid,
                ':nids' => $nids,
                ':timestamp' => NODE_NEW_LIMIT,
            ));
            foreach ($result as $node) {
                foreach ($ids[$node->nid] as $id) {
                    $values[$id]->{$this->field_alias} = $node->num_comments;
                }
            }
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function render_link($data, $values) {
        if (!empty($this->options['link_to_comment']) && $data !== NULL && $data !== '') {
            $node = new stdClass();
            $node->nid = $this->get_value($values, 'nid');
            $node->type = $this->get_value($values, 'type');
            $this->options['alter']['make_link'] = TRUE;
            $this->options['alter']['path'] = 'node/' . $node->nid;
            $this->options['alter']['query'] = comment_new_page_count($this->get_value($values, 'comment_count'), $this->get_value($values), $node);
            $this->options['alter']['fragment'] = 'new';
        }
        return $data;
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($values) {
        $value = $this->get_value($values);
        if (!empty($value)) {
            return $this->render_link(parent::render($values), $values);
        }
        else {
            $this->options['alter']['make_link'] = FALSE;
        }
    }

}