Fix other endpoint.

app/Api/V1/Requests/Models/CurrencyExchangeRate/StoreByCurrenciesRequest.php

@@ -0,0 +1,73 @@
+<?php
+
+/*
+ * StoreRequest.php
+ * Copyright (c) 2025 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/.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Api\V1\Requests\Models\CurrencyExchangeRate;
+
+use Carbon\Carbon;
+use Carbon\Exceptions\InvalidFormatException;
+use FireflyIII\Support\Request\ChecksLogin;
+use FireflyIII\Support\Request\ConvertsDataTypes;
+use Illuminate\Contracts\Validation\Validator;
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreByCurrenciesRequest extends FormRequest
+{
+    use ChecksLogin;
+    use ConvertsDataTypes;
+
+    public function getAll(): array
+    {
+        return $this->all();
+    }
+
+    /**
+     * The rules that the incoming request must be matched against.
+     */
+    public function rules(): array
+    {
+        return [
+            '*' => 'required|numeric|min:0.0000000001',
+        ];
+    }
+
+    public function withValidator(Validator $validator): void
+    {
+        $validator->after(
+            static function (Validator $validator): void {
+                $data = $validator->getData() ?? [];
+                foreach ($data as $date => $rate) {
+                    try {
+                        $date = Carbon::createFromFormat('Y-m-d', $date);
+                    } catch (InvalidFormatException $e) {
+                        $validator->errors()->add('date', 'Invalid date info');
+                        return;
+                    }
+                    if (!is_numeric($rate)) {
+                        $validator->errors()->add('rate', 'Rate must be a number.');
+                        return;
+                    }
+                }
+            });
+    }
+}