protected function _setDescription()
    {
        if (empty($this->viewVars['description_for_layout'])) {
            $description = option('site_description');
            $this->assign('description', $description);
            $this->set('description_for_layout', $description);
            $this->append('meta', $this->Html->meta('description', $description));
        } else {
            $this->assign('description', $this->viewVars['description_for_layout']);
        }
    }
protected function _setDescription()
    {
        if (empty($this->viewVars['description_for_layout'])) {
            $description = option('site_description');
            $this->assign('description', $description);
            $this->set('description_for_layout', $description);
            $this->append('meta', $this->Html->meta('description', $description));
        } else {
            $this->assign('description', $this->viewVars['description_for_layout']);
        }
    }
protected function _setDescription ( ) { if ( empty ( $ this -> viewVars [ 'description_for_layout' ] ) ) { $ description = option ( 'site_description' ) ; $ this -> assign ( 'description' , $ description ) ; $ this -> set ( 'description_for_layout' , $ description ) ; $ this -> append ( 'meta' , $ this -> Html -> meta ( 'description' , $ description ) ) ; } else { $ this -> assign ( 'description' , $ this -> viewVars [ 'description_for_layout' ] ) ; } }
Sets meta-description for layout.

It sets `description_for_layout` view-variable, and appends meta-description
tag to `meta` block. Site's description will be used if not found.

@return void
Sets meta - description for layout .