CreateLabOrderRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use App\Models\Patient;
use App\Models\Practice;
use App\Models\Lab;

class CreateLabOrderRequest extends FormRequest
{
  public function authorize()
  {
    return true;
  }
  
  public function rules()
  {
    return [
      'patient_id' => 'integer|required',
      'practice_id' => 'integer|required',
      'lab_id' => 'integer|required',
      'lens' => 'string|required',
      'reference' => 'string|required',
      'date_sent' => 'date|required',
      'date_required' => 'date|required',
    ];
  }
  
  public function getPatient()
  {
    $patientId = $this->input('patient_id');
    
    return Patient::find($patientId);
  }
  
  public function getPractice()
  {
    $practiceId = $this->input('practice_id');
    
    return Practice::find($practiceId);
  }
  
  public function getLab()
  {
    $labId = $this->input('lab_id');
    
    return Lab::find($labId);
  }
  
  public function getLabOrderData()
  {
    return $this->only('lens', 'reference', 'date_sent', 'date_required'); 
  }
}

LabOrdersController.php

<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Requests\CreateLabOrderRequest;
use App\Http\Resources\LabOrder as LabOrderResource;
use App\Http\Models\LabOrder;

class LabOrdersController extends Controller
{
  // ...
 
  public function store(CreateLabOrderRequest $request)
  {
    $patient = $request->getPatient();
    $practice = $request->getPractice();
    $lab = $request->getLab();
    
    $labOrderData = $request->getLabOrderData();
    
    $labOrder = new LabOrder($labOrderData);
    $labOrder->patient()->associate($patient);
    $labOrder->practice()->associate($practice);
    $labOrder->lab()->associate($lab);
    $labOrder->save();
    
    /*
    Lines 22-26 could be changed to this:
    
    $labOrder = tap(new LabOrder($labOrderData), function ($instance) use ($patient, $practice, $lab) {
      $instance->patient()->associate($patient);
      $instance->practice()->associate($practice);
      $instance->lab()->associate($lab);
    })->save();
    
    */
    
    return LabOrderResource::make($labOrder);
  }
  
  // ...
}