This plugin allows users to edit office documents from [Chamilo](https://chamilo.org) using ONLYOFFICE Docs packaged as Document Server - [Community or Enterprise Edition](#onlyoffice-docs-editions).
The plugin is compatible with Chamilo v1.11.16 and later, although some features might only work on the [latest stable version](https://chamilo.org/download) of Chamilo.
To install the free Community version, use [Docker](https://github.com/onlyoffice/Docker-DocumentServer) (recommended) or follow [these instructions](https://helpcenter.onlyoffice.com/installation/docs-community-install-ubuntu.aspx) for Debian, Ubuntu, or derivatives.
On the Plugins page, find ONLYOFFICE and click _Configure_. You'll see the _Settings_ page. Enable the plugin and specify the _Document Server address_.
Starting from version 7.2, JWT is enabled by default and the secret key is generated automatically to restrict the access to ONLYOFFICE Docs and for security reasons and data integrity.
Specify your own **Secret key** on the Chamilo **Settings** page. The key can be found on your OnlyOffice server, depending on the type of server. See the ONLYOFFICE Docs [config file](https://api.onlyoffice.com/editors/signature/) page for more details.
Specify the same secret key (search for a long hash string next to "secret") and save.
* The user is redirected to the file creation page where they need to enter the file name and format (text document, spreadsheet, or presentation). The browser calls `/plugin/onlyoffice/create.php` method. It adds the copy of the empty file to the course folder.
* The request is being sent to `/plugin/onlyoffice/editor.php?docId=«document identificator»`. The server processes the request, generates the editor initialization configuration with the properties:
* **url** - the URL that ONLYOFFICE Document Server uses to download the document;
* **callbackUrl** - the URL at which ONLYOFFICE Document Server informs Chamilo about the status of the document editing;
* **documentServerUrl** - the URL that the client needs to respond to ONLYOFFICE Document Server (can be set at the administrative settings page);
* **key** - the etag to instruct ONLYOFFICE Document Server whether to download the document again or not;
* The server returns a page with a script to open the editor.
* The browser opens this page and loads the editor.
* The browser makes a request to Document Server and passes the document configuration to it.
* Document Server loads the document and the user starts editing.
* Document Server sends a POST request to **callbackUrl** to inform Chamilo that the user is editing the document.
* When all users have finished editing, they close the editor window.
* After 10 seconds, Document Server makes a POST request to **callbackUrl** with the information that editing has ended and sends a link to the new document version.
* Chamilo loads a new version of the document and overwrites the file.
