Add code for budgets

app/Api/V2/Controllers/Controller.php

@@ -0,0 +1,56 @@
+<?php
+/*
+ * Controller.php
+ * Copyright (c) 2022 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace FireflyIII\Api\V2\Controllers;
+
+use FireflyIII\Transformers\AbstractTransformer;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Routing\Controller as BaseController;
+use League\Fractal\Manager;
+use League\Fractal\Resource\Item;
+use League\Fractal\Serializer\JsonApiSerializer;
+
+/**
+ * Class Controller
+ */
+class Controller extends BaseController
+{
+    protected const CONTENT_TYPE = 'application/vnd.api+json';
+    /**
+     * Returns a JSON API object and returns it.
+     *
+     * @param string              $key
+     * @param Model               $object
+     * @param AbstractTransformer $transformer
+     * @return array
+     */
+    final protected function jsonApiObject(string $key, Model $object, AbstractTransformer $transformer): array
+    {
+        // create some objects:
+        $manager = new Manager;
+        $baseUrl = request()->getSchemeAndHttpHost() . '/api/v2';
+        $manager->setSerializer(new JsonApiSerializer($baseUrl));
+
+        $resource = new Item($object, $transformer, $key);
+        return $manager->createData($resource)->toArray();
+    }
+
+}