ForkCMS\Bundle\InstallerBundle\Service\ForkInstaller::installExtras PHP Method

    protected function installExtras()
    {
        // loop default extras
        foreach ($this->defaultExtras as $extra) {
            // get pages without this extra
            $revisionIds = $this->container->get('database')->getColumn('SELECT i.revision_id
                 FROM pages AS i
                 WHERE i.revision_id NOT IN (
                     SELECT DISTINCT b.revision_id
                     FROM pages_blocks AS b
                     WHERE b.extra_id = ?
                    GROUP BY b.revision_id
                 )', array($extra['id']));
            // build insert array for this extra
            $insertExtras = array();
            foreach ($revisionIds as $revisionId) {
                $insertExtras[] = array('revision_id' => $revisionId, 'position' => $extra['position'], 'extra_id' => $extra['id'], 'created_on' => gmdate('Y-m-d H:i:s'), 'edited_on' => gmdate('Y-m-d H:i:s'), 'visible' => 'Y');
            }
            // insert block
            $this->container->get('database')->insert('pages_blocks', $insertExtras);
        }
    }