Laravel5.1查詢關系（口才ORM）

Question

我的模型是Patient-> Sample-> Ready_Sample，關系都是oneToMany，我的問題是我查詢Ready_Sample需要知道Patient.name

Patient_Model

class Patient_Model extends Base_Model {

    protected $table = 'patients';

    public function samples(){
        return $this->hasMany('App\Models\Sample_Model','patient_id','code');
    }   
}

Sample_Model

class Sample_Model extends Base_Model{

    protected $table = 'samples';

    public function patient(){
        return $this->belongsTo('App\Models\Patient_Model','patient_id','code');
    }

    public function ready_samples(){
        return $this->hasMany('App\Models\Ready_Sample_Model','sample_id','code');
    }
}

Ready_Sample_Model

class Ready_Sample_Model extends Model{

    protected $table = 'ready_samples';

    public function sample(){
        return $this->belongsTo('App\Models\Sample_Model','sample_id','code');
    }
}

在Sample_Controller中

class Sample_Controller extends Controller{

    public function query(Request $request){

    $result = Sample_Model::with(['patient']);
        ->orderBy("updated_at","desc")
        ->Paginate(15)
        ->toJson();
   return $result;
}

在Sample中，我知道要獲取Patient.name，但是Ready_Sample如何獲取Patien.name？

Answer 1

您可以使用以下代碼獲取patient.name ：

$readySample = Ready_Sample_Model::first(); // fetch the first record

echo $readySample->sample->patient->name;

希望能幫助到你！