add user group validation

app/JsonApi/V2/Accounts/AccountCollectionQuery.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace FireflyIII\JsonApi\V2\Accounts;
+
+use FireflyIII\Models\Account;
+use FireflyIII\Rules\IsAllowedGroupAction;
+use Illuminate\Support\Facades\Log;
+use LaravelJsonApi\Laravel\Http\Requests\ResourceQuery;
+use LaravelJsonApi\Validation\Rule as JsonApiRule;
+
+class AccountCollectionQuery extends ResourceQuery
+{
+
+    /**
+     * Get the validation rules that apply to the request query parameters.
+     *
+     * @return array
+     */
+    public function rules(): array
+    {
+        Log::debug(__METHOD__);
+        return [
+            'fields' => [
+                'nullable',
+                'array',
+                JsonApiRule::fieldSets(),
+            ],
+            'user_group_id' => [
+                'nullable',
+                'integer',
+                new IsAllowedGroupAction(Account::class, request()->method()),
+            ],
+            'filter' => [
+                'nullable',
+                'array',
+                JsonApiRule::filter(),
+            ],
+            'include' => [
+                'nullable',
+                'string',
+                JsonApiRule::includePaths(),
+            ],
+            'page' => [
+                'nullable',
+                'array',
+                JsonApiRule::page(),
+            ],
+            'sort' => [
+                'nullable',
+                'string',
+                JsonApiRule::sort(),
+            ],
+            'withCount' => [
+                'nullable',
+                'string',
+                JsonApiRule::countable(),
+            ],
+        ];
+    }
+}