如何获得 laravel 中的关系

How to get the relation in laravel

我有三个型号:ManagerVendorBanquet 关系是:

如何在 laravel orm 中获取具有所有关系的所有经理?

$manager = Manager::where('active',1)->get();
$vendor = $manager->vendor()->get();// -- dose not work! 
$banquet =  $vendor->banquet()->get();// -- dose not work! 

经理模型:

class Manager extends Model{
     protected $table = 'manager';
     protected $primaryKey = 'id';

     public function vendor(){
     return $this->hasOne('ACME\Entities\Vendor','managerId','id');
   }
}

这是模型

供应商型号:

class Vendor extends Model{
    protected $table = 'vendor';
    protected $primaryKey = 'id';

    public function manager(){
      return $this->belongsTo('ACME\Entities\Manager_V','id','managerId');
    }

    public function banquet(){
        return $this->hasMany('ACME\Entities\V_Banquet' ,'vendorId' ,'id');
    }
}

宴会模式:

class Banquet extends Model{
    protected $table = 'banquet';
    protected $primaryKey ='id';

    public function vendor()
    {
        return $this->belongsTo('ACME\Entities\Vendor' ,'vendorId' ,'id');
    }
}

使用方法

$manager =  Manager::with(['vendor','vendor.banquet'])->where('active',1)->get();

您将能够以

的形式获取数据
$banquet = $manager->vendor->banquet;
// $banquet will be array of banquet model objects

记住 hasMany return 数组,hasOne return 对象和 belongsTo return 对象。

这没有用,因为 get() 给出了经理的集合。供应商有很多宴会,因此供应商模型中的 banquets() 将是一个很好的约定。你应该这样做:

    $managers = Manager::where('active',1)->with('vendor','vendor.banquets')->get(); 
    foreach($managers as $manager)
    {
          $vendor=$manager->vendor;
          print_r($vendor);
          foreach($vendor->banquets as $banquet)
          {
                  print_r($banquet);
          }
    }