laravel 模型(2)

//模型文件app/models/Archives.php
class Archives extends Eloquent{    
    protected $table = 'archives';
    public $timestamps = false;    
}
//路由文件
Route::get('/test',array('as'=>'routetest',function(){    
    //DB类位于  vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php
    //$arr = DB::select('select * from archives where id=?',[1]);//查
    //$arr = DB::insert('insert into archives (title,body)values(?,?)',array('title2','body2'));//增
    //$arr = DB::update('update archives set title=?,body=? where id=?',array('new1','newbody1',4));//改
    //$arr = DB::delete('delete from archives where id=?',array(4));//删
    //$arr = DB::table('archives')->where('id','>',1)->orderBy('id','desc')->get();//获取多条数据
    //$arr = DB::table('archives')->orderBy('id','desc')->first();//获取第一条数据
    //$arr = DB::table('archives')->where('id',2)->pluck('title');//获取一条数据的指定字段
    //$arr = DB::table('archives')->where('id','>',1)->lists('title');//获取一张表的一列字段
    //$arr = DB::table('archives')->join('arctype','arctype.id','=','archives.typeid')->select('archives.*','arctype.typename')->get();//JOIN试例
    //$arr = DB::table('archives')->where('id','>',1)->toSql();//获取查询的SQL语句，公用于条件，不能用于get()之类的有结果之中
    //模型查询，模型类的父类Eloquent 位于/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php
     $arr = Archives::find(3);//查询id为3的一条数据
     $arr = Archives::all(array('id','title'));//查询全部数据
     $arr = Archives::where('typeid','=',1)->orderBy('id','desc')->get();
}));