Habari\AdminThemesHandler::ajax_add_block PHP Method

    public function ajax_add_block($handler_vars)
    {
        Utils::check_request_method(array('POST'));
        $this->setup_admin_theme('');
        $title = $_POST['title'];
        $type = $_POST['type'];
        if (!isset($_POST['title'])) {
            $this->theme->blocks = Plugins::filter('block_list', array());
            $this->theme->block_instances = DB::get_results('SELECT b.* FROM {blocks} b ORDER BY b.title ASC', array(), 'Block');
            $this->theme->active_theme = Themes::get_active_data(true);
            $this->display('block_instances');
        } elseif ($title == '') {
            $this->theme->blocks = Plugins::filter('block_list', array());
            $this->theme->block_instances = DB::get_results('SELECT b.* FROM {blocks} b ORDER BY b.title ASC', array(), 'Block');
            $this->theme->active_theme = Themes::get_active_data(true);
            $this->display('block_instances');
            $msg = json_encode(_t('A new block must first have a name.'));
            echo '<script type="text/javascript">
				//alert(' . $msg . ');
				human_msg.display_msg(' . $msg . ');
			</script>';
        } else {
            $block = new Block(array('title' => $title, 'type' => $type));
            $block->insert();
            $this->prepare_block_list();
            $this->theme->active_theme = Themes::get_active_data(true);
            $this->display('block_instances');
            $msg = json_encode(_t('Added new block "%1s" of type "%2s".', array($title, $type)));
            echo '<script type="text/javascript">
				human_msg.display_msg(' . $msg . ');
				spinner.stop();
			</script>';
        }
    }