Add more airlines and fix edit bugs

app/Models/Airline.php

@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
@@ -26,9 +27,18 @@ class Airline extends Model
 
 
     public $timestamps = false;
+    protected $appends = [
+        'display_name',
+    ];
 
-    public function displayName() : string {
-        return "{$this->name} ({$this->IATA_code}/{$this->ICAO_code})";
+    protected function displayName() : Attribute{
+        return Attribute::make(
+            get: function () {
+                $codes = array_filter([$this->IATA_code, $this->ICAO_code]);
+                $codeString = count($codes) ? ' (' . implode('/', $codes) . ')' : '';
+                return "{$this->name}{$codeString}";
+            }
+        );
     }
 
     public function country(): BelongsTo