---
url: https://gudhub.com/ru/docs/understanding-gudhub/application/file-list/
title: "File List\n                #"
description: "There are many different blocks that are aimed at loading files. Their data do not save in items list . There is a separated array for that called file list . I"
lang: uk
updated: 2026-09-11T20:56:08.675Z
---

# File List [#](https://gudhub.com/ru/docs/understanding-gudhub/application/file-list/#file-list)

There are many different blocks that are aimed at loading files. Their data do not save in [_items\_list_](https://gudhub.com/ru/docs/understanding-gudhub/application/items-list/). There is a separated array for that called **file\_list**. In this chapter we will see what data about files is used in the application.

For each loaded file will be saved all needed data about it.

| Name | Type | Description |
| :-- | :-- | :-- |
| app\_id | `number` | _due to this property, file is saved in the application folder_ |
| extention | `string` | _saves file extension; used in generating a new name_ |
| file\_id | `number` | _saves generated by the server identification number for file_ |
| file\_name | `string` | _initial file name saves in this property; in the future, it is not used since a new name is generated_ |
| item\_id | `number` | _shows which item this file belongs to_ |
| last\_update | `number` | _shows last time of file update in milliseconds_ |
| url | `string` | _shows path to the file on the server_ |

## Name Generation [#](https://gudhub.com/ru/docs/understanding-gudhub/application/file-list/#name-generation)

At first, server generates an identification number for file. Then server merges it with the extension and saves as a new file name.

## Saving Files On The Server [#](https://gudhub.com/ru/docs/understanding-gudhub/application/file-list/#saving-files-on-the-server)

Let’s look at url. It consists of three parts:

`https://gudhub.com/userdata/26503/872421.jpg`

Base URL: `https://gudhub.com/userdata/`

Application ID: `26503`

File name created by the server: `872421.jpg`