Some Error handling and acceptance tests

app/Libraries/Trips/FlightTransform.php

@@ -7,6 +7,15 @@ use League\Fractal\TransformerAbstract;
 
 class FlightTransform extends TransformerAbstract
 {
+    /**
+     * List of resources possible to include
+     *
+     * @var array
+     */
+    protected $availableIncludes = [
+        'trips'
+    ];
+    
     /**
      * Turn this item object into a generic array
      *
@@ -17,10 +26,23 @@ class FlightTransform extends TransformerAbstract
         return [
             'id'         => $flight->id,
             'name'       => $flight->destination,
+            'trips'      => $flight->trips()->get(),
             'links'      => [
                 'rel' => 'self',
                 'uri' => '/flights/'.$flight->id,
             ]
         ];
     }
+    
+    /**
+     * Include Trips
+     *
+     * @return \League\Fractal\Resource\ResourceAbstract
+     */
+    public function includeTrips(Flights $flight)
+    {
+        $flights = $flight->trips()->get();
+        
+        return $this->collection($flights, new TripTransformer());
+    }
 }