first upload all files

Modules/Brand/Http/Requests/SaveBrandRequest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Modules\Brand\Http\Requests;
+
+use Illuminate\Validation\Rule;
+use Modules\Brand\Entities\Brand;
+use Modules\Core\Http\Requests\Request;
+
+class SaveBrandRequest extends Request
+{
+    /**
+     * Available attributes.
+     *
+     * @var string
+     */
+    protected $availableAttributes = 'brand::attributes';
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'name' => ['required'],
+            'slug' => $this->getSlugRules(),
+        ];
+    }
+
+    private function getSlugRules()
+    {
+        $rules = $this->route()->getName() === 'admin.brands.update'
+            ? ['required']
+            : ['sometimes'];
+
+        $slug = Brand::withoutGlobalScope('active')->where('id', $this->id)->value('slug');
+
+        $rules[] = Rule::unique('brands', 'slug')->ignore($slug, 'slug');
+
+        return $rules;
+    }
+}