Update UserFieldValue Model (#1344)

* Add `name` attribute

* Pre-StyleFix

* Update UserFieldValue.php

* Used optional()

* Update Pirep.php

* Update Flight.php

* Update User.php

app/Models/User.php

@@ -126,7 +126,7 @@ class User extends Authenticatable
     {
         $length = setting('pilots.id_length');
 
-        return $this->airline->icao.str_pad($this->pilot_id, $length, '0', STR_PAD_LEFT);
+        return optional($this->airline)->icao.str_pad($this->pilot_id, $length, '0', STR_PAD_LEFT);
     }
 
     /**