Laravel中创建Model

2015_06_02_071328_create_user_addresses_table.php中的代码：<?phpuse Illuminate\Database\Schema\Blueprint;use Illuminate\Database\Migrations\Migration;class CreateUserAddressesTable extends Migration {    /** * Run the migrations. * * @return void */    public function up()    {        Schema::create('user_addresses', function(Blueprint $table)        {                       $table->increments('address_id')                ->comment("主键");            $table->mediumInteger('user_id')                ->comment('用户id');            $table->string('consignee', 60)                ->comment('收货人');            $table->string('country', 60)                ->comment('国家');            $table->string('province', 60)                ->comment('省份');            $table->string('city', 60)                ->comment('市');            $table->string('district', 120)                ->comment('街道');            $table->string('address', 120)                ->comment('详细地址');            $table->string('zip_code', 60)                ->comment('政编码邮');            $table->string('tel', 60)                ->comment('固定电话');            $table->string('mobile', 60)                ->comment('手机');            $table->tinyInteger('is_default')                ->comment('是否是默认地址');        });    }    /** * Reverse the migrations. * * @return void */    public function down()    {        Schema::drop('addresses');    }}