protected function create(Blueprint $table)
{
$table->create();
$table->increments('id');
$table->string('category_slug', 100)->nullable()->index();
$table->string('title');
$table->string('poster', 200)->default('');
$table->integer('posted')->unsigned()->default(0);
$table->integer('first_post_id')->unsigned()->default(0);
$table->integer('last_post')->unsigned()->default(0);
$table->integer('last_post_id')->unsigned()->default(0);
$table->string('last_poster', 200)->nullable();
$table->integer('num_views')->unsigned()->default(0);
$table->integer('num_replies')->unsigned()->default(0);
$table->timestamps();
}