Massively simplify API binding logic

Changes the API internals to use normal Laravel binding which automatically supports nested-models and can determine their relationships. This removes a lot of confusingly complex internal logic and replaces it with standard Laravel code.

This also removes a deprecated "getModel" method and fully replaces it with a "parameter" method that does stricter type-checking.

app/Http/Controllers/Api/Application/Servers/DatabaseController.php

@@ -105,12 +105,10 @@ class DatabaseController extends ApplicationApiController
 
     /**
      * Handle a request to delete a specific server database from the Panel.
-     *
-     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
      */
-    public function delete(ServerDatabaseWriteRequest $request): Response
+    public function delete(ServerDatabaseWriteRequest $request, Server $server, Database $database): Response
     {
-        $this->databaseManagementService->delete($request->getModel(Database::class));
+        $this->databaseManagementService->delete($database);
 
         return response('', 204);
     }

app/Http/Controllers/Api/Application/Servers/ExternalServerController.php

@@ -2,6 +2,7 @@
 
 namespace Pterodactyl\Http\Controllers\Api\Application\Servers;
 
+use Pterodactyl\Models\Server;
 use Pterodactyl\Transformers\Api\Application\ServerTransformer;
 use Pterodactyl\Http\Controllers\Api\Application\ApplicationApiController;
 use Pterodactyl\Http\Requests\Api\Application\Servers\GetExternalServerRequest;
@@ -11,9 +12,11 @@ class ExternalServerController extends ApplicationApiController
     /**
      * Retrieve a specific server from the database using its external ID.
      */
-    public function index(GetExternalServerRequest $request): array
+    public function index(GetExternalServerRequest $request, string $external_id): array
     {
-        return $this->fractal->item($request->getServerModel())
+        $server = Server::query()->where('external_id', $external_id)->firstOrFail();
+
+        return $this->fractal->item($server)
             ->transformWith($this->getTransformer(ServerTransformer::class))
             ->toArray();
     }

app/Http/Controllers/Api/Application/Servers/ServerController.php

@@ -86,9 +86,9 @@ class ServerController extends ApplicationApiController
     /**
      * Show a single server transformed for the application API.
      */
-    public function view(GetServerRequest $request): array
+    public function view(GetServerRequest $request, Server $server): array
     {
-        return $this->fractal->item($request->getModel(Server::class))
+        return $this->fractal->item($server)
             ->transformWith($this->getTransformer(ServerTransformer::class))
             ->toArray();
     }

app/Http/Controllers/Api/Application/Servers/ServerDetailsController.php

@@ -42,14 +42,14 @@ class ServerDetailsController extends ApplicationApiController
      * @throws \Pterodactyl\Exceptions\Model\DataValidationException
      * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
      */
-    public function details(UpdateServerDetailsRequest $request): array
+    public function details(UpdateServerDetailsRequest $request, Server $server): array
     {
-        $server = $this->detailsModificationService->returnUpdatedModel()->handle(
-            $request->getModel(Server::class),
+        $updated = $this->detailsModificationService->returnUpdatedModel()->handle(
+            $server,
             $request->validated()
         );
 
-        return $this->fractal->item($server)
+        return $this->fractal->item($updated)
             ->transformWith($this->getTransformer(ServerTransformer::class))
             ->toArray();
     }

app/Http/Controllers/Api/Application/Servers/StartupController.php

@@ -34,11 +34,11 @@ class StartupController extends ApplicationApiController
      * @throws \Pterodactyl\Exceptions\Model\DataValidationException
      * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
      */
-    public function index(UpdateServerStartupRequest $request): array
+    public function index(UpdateServerStartupRequest $request, Server $server): array
     {
         $server = $this->modificationService
             ->setUserLevel(User::USER_LEVEL_ADMIN)
-            ->handle($request->getModel(Server::class), $request->validated());
+            ->handle($server, $request->validated());
 
         return $this->fractal->item($server)
             ->transformWith($this->getTransformer(ServerTransformer::class))