belongsTo('App\Models\Airline', 'airline_id'); } public function home_airport() { return $this->belongsTo('App\Models\Airport', 'home_airport_id'); } public function current_airport() { return $this->belongsTo('App\Models\Airport', 'curr_airport_id'); } public function rank() { return $this->belongsTo('App\Models\Rank', 'rank_id'); } }