Upgrade to Laravel 9 (#4413)

Co-authored-by: DaneEveritt <dane@daneeveritt.com>

app/Models/Subuser.php

@@ -3,6 +3,8 @@
 namespace Pterodactyl\Models;
 
 use Illuminate\Notifications\Notifiable;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 /**
  * @property int $id
@@ -26,22 +28,16 @@ class Subuser extends Model
 
     /**
      * The table associated with the model.
-     *
-     * @var string
      */
     protected $table = 'subusers';
 
     /**
      * Fields that are not mass assignable.
-     *
-     * @var array
      */
     protected $guarded = ['id', 'created_at', 'updated_at'];
 
     /**
      * Cast values to correct type.
-     *
-     * @var array
      */
     protected $casts = [
         'user_id' => 'int',
@@ -49,10 +45,7 @@ class Subuser extends Model
         'permissions' => 'array',
     ];
 
-    /**
-     * @var array
-     */
-    public static $validationRules = [
+    public static array $validationRules = [
         'user_id' => 'required|numeric|exists:users,id',
         'server_id' => 'required|numeric|exists:servers,id',
         'permissions' => 'nullable|array',
@@ -61,40 +54,32 @@ class Subuser extends Model
 
     /**
      * Return a hashid encoded string to represent the ID of the subuser.
-     *
-     * @return string
      */
-    public function getHashidAttribute()
+    public function getHashidAttribute(): string
     {
         return app()->make('hashids')->encode($this->id);
     }
 
     /**
      * Gets the server associated with a subuser.
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
      */
-    public function server()
+    public function server(): BelongsTo
     {
         return $this->belongsTo(Server::class);
     }
 
     /**
      * Gets the user associated with a subuser.
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
      */
-    public function user()
+    public function user(): BelongsTo
     {
         return $this->belongsTo(User::class);
     }
 
     /**
      * Gets the permissions associated with a subuser.
-     *
-     * @return \Illuminate\Database\Eloquent\Relations\HasMany
      */
-    public function permissions()
+    public function permissions(): HasMany
     {
         return $this->hasMany(Permission::class);
     }