views_handler_field_node_revision_link_revert.inc

<?php


/**
 * Field handler to present a link to revert a node to a revision.
 *
 * @ingroup views_field_handlers
 */
class views_handler_field_node_revision_link_revert extends views_handler_field_node_link {
    function construct() {
        parent::construct();
        $this->additional_fields['uid'] = array(
            'table' => 'node',
            'field' => 'uid',
        );
        $this->additional_fields['node_vid'] = array(
            'table' => 'node',
            'field' => 'vid',
        );
        $this->additional_fields['vid'] = 'vid';
        $this->additional_fields['format'] = 'format';
    }
    function access() {
        return user_access('revert revisions') || user_access('administer nodes');
    }
    function render_link($data, $values) {
        // ensure user has access to edit this node.
        $node = new stdClass();
        $node->nid = $this->get_value($values, 'nid');
        $node->vid = $this->get_value($values, 'vid');
        $node->uid = $this->get_value($values, 'uid');
        $node->format = $this->get_value($values, 'format');
        $node->status = 1;
        // unpublished nodes ignore access control
        if (!node_access('update', $node)) {
            return;
        }
        // Current revision cannot be reverted.
        if ($node->vid == $this->get_value($values, 'node_vid')) {
            return;
        }
        $text = !empty($this->options['text']) ? $this->options['text'] : t('revert');
        $this->options['alter']['make_link'] = TRUE;
        $this->options['alter']['path'] = "node/{$node->nid}/revisions/{$node->vid}/revert";
        $this->options['alter']['query'] = drupal_get_destination();
        return $text;
    }

}