protected function create(Blueprint $table)
{
$table->create();
$table->integer('group_id')->unsigned();
$table->integer('forum_id')->unsigned();
$table->boolean('read_forum')->default(true);
$table->boolean('post_replies')->default(true);
$table->boolean('post_topics')->default(true);
$table->primary(array('group_id', 'forum_id'));
}