Question

简单易懂的口才查询不使用where条件。

Players :: where（'id_player'，“ =”，3113）-> first（）-> toSql（）;

返回：

“从players中选择*”

我的控制器：

namespace App\Http\Controllers\Office;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;

use App\Players;

class OfficeController extends Controller{
   public function playerLineup(Request $request){
      $e = Players::where('id_player',"=" ,3113)->first()->toSql(); 
      dd($e);
   }
}

我的模态：

namespace App;

use Illuminate\Support\Facades\DB;
use Illuminate\Database\Eloquent\Model;

class Players extends Model{
    protected $primaryKey = 'idp';
}

Answer 1

运行->first()后，结果将是Player模型的新实例。那么在新模型上的->toSql()就像Player::query()->toSql()。

在此之前，您需要致电->toSql()：

Players::where('id_player',"=" ,3113)->toSql();

或

Players::where('id_player',"=" ,3113)->limit(1)->toSql();

Answer 2

/ 尝试执行此操作 /

namespace App\Http\Controllers\Office;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\Players;

use DB;

class OfficeController extends Controller{
   public function playerLineup(Request $request){
      $e = DB::table('Players')->where('id_player',"=" ,3113)->get()->first(); 
      dd($e);
   }
}

雄辩的查询不使用where / first条件。为什么？

2 个答案: