refactor: update models relations

app/Models/Airport.php

@@ -12,37 +12,47 @@ use Illuminate\Database\Eloquent\Model;
 
 /**
  * Class Airport
- * 
+ *
  * @property int $id
  * @property string $name
- * @property string $city
- * @property string $country
+ * @property int $city_id
  * @property int $status
  * @property Carbon $created_at
  * @property Carbon $updated_at
- * 
+ *
+ * @property City $city
  * @property Collection|Flight[] $flights
  *
  * @package App\Models
  */
 class Airport extends Model
 {
-	protected $table = 'airports';
-	public static $snakeAttributes = false;
+    protected $table = 'airports';
+    public static $snakeAttributes = false;
 
-	protected $casts = [
-		'status' => 'int'
-	];
+    protected $casts = [
+        'city_id' => 'int',
+        'status' => 'int'
+    ];
 
-	protected $fillable = [
-		'name',
-		'city',
-		'country',
-		'status'
-	];
+    protected $fillable = [
+        'name',
+        'city_id',
+        'status'
+    ];
 
-	public function flights()
-	{
-		return $this->hasMany(Flight::class, 'destination_airport_id');
-	}
+    public function city()
+    {
+        return $this->belongsTo(City::class);
+    }
+
+    public function originFlights()
+    {
+        return $this->hasMany(Flight::class, 'origin_airport_id');
+    }
+
+    public function destinationFlights()
+    {
+        return $this->hasMany(Flight::class, 'destination_airport_id');
+    }
 }