Add file upload function. modify paramiter FILESYSTEM_DISK=public in file .env

app/Http/Requests/FileRequest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rules\File;
+
+
+class FileRequest extends FormRequest
+{
+    public $filetoinsert;
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'filetoinsert' => ['required', 'mimes:txt']//, File::types(['csv'])]
+        ];
+    }
+
+    public function messages(): array
+    {
+        return [
+            'filetoinsert.required' => 'ERROR: csv file not selected!',
+            'filetoinsert.mimes'=> "ERRORE: select only csv format"
+        ];
+    }
+
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+}
+
+