first upload all files

Modules/Attribute/Http/Requests/SaveProductAttributesRequest.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Modules\Attribute\Http\Requests;
+
+use Illuminate\Validation\Rule;
+use Modules\Core\Http\Requests\Request;
+
+class SaveProductAttributesRequest extends Request
+{
+    /**
+     * Available attributes.
+     *
+     * @var string
+     */
+    protected $availableAttributes = 'attribute::attributes.product_attributes';
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'attributes.*.attribute_id' => ['required_with:attributes.*.values', Rule::exists('attributes', 'id')],
+            'attributes.*.values' => ['required_with:attributes.*.attribute_id', Rule::exists('attribute_values', 'id')],
+        ];
+    }
+
+    /**
+     * Get data to be validated from the request.
+     *
+     * @return array
+     */
+    public function validationData()
+    {
+        if (empty($this->except('attributes'))) {
+            return request()->all();
+        }
+
+        return request()->merge([
+            'attributes' => $this->filter($this->get('attributes', [])),
+        ])->all();
+    }
+
+    /**
+     * Filter product attributes.
+     *
+     * @param array $attributes
+     * @return array
+     */
+    private function filter($attributes = [])
+    {
+        return array_filter($attributes, function ($attribute) {
+            return ! is_null($attribute['attribute_id']);
+        });
+    }
+}