cssd-back/app/Http/Requests/UploadFileRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class UploadFileRequest extends FormRequest
{

    public function authorize()
    {
        return true;
    }

    public function rules()
    {
        return [
            "file" => "required|mimes:pdf,jpeg,png,jpg,doc,docx|max:2048",
            "batch_id" => "required",
            "model_type" => "required|string",
        ];
    }

}