undefined variable When loading the view in laravel

I am getting this error of undefined variable in the View even though i have retrieved the data from table in the doctorAppointment model and then passed it to Controller and then controller passed it further to view. This is the model

<?php

   namespace App;

   use Illuminate\Database\Eloquent\Model;

   class doctorAppointment extends Model
   {
      public function user()
      {
          return $this->belongsTo('App\User');
      }
   }

this is my controller

class AppointmentController extends Controller

{
   public function GetAppointment()
  {
    $doctorAppointment= doctorAppointment::all();
    return view('dashboard',array('appointments'=>$doctorAppointment));
  }

}

this is my view

@foreach($appointments as $appointment)
  <p>{$appointment->patientEmail}</p>
@endforeach

this is my route

Route::get('/dashboard',  'AppointmentController@GetAppointment');

via Chebli Mohamed