Add callout about overriding image function in Plugins extension docs

docusaurus/docs/cms/features/media-library.md

@@ -108,6 +108,10 @@ When using the default upload provider, the following specific configuration opt
 The Upload request timeout is defined in the server options, not in the Upload plugin options, as it's not specific to the Upload plugin but is applied to the whole Strapi server instance (see [upload request timeout](#upload-request-timeout)).
 :::
 
+:::note
+If you wish to override the image function to generate custom file names, please refer to the [Plugins extension](/cms/plugins-development/plugins-extension#within-the-extensions-folder) documentation.
+:::
+
 #### Example custom configuration
 
 The following is an example of a custom configuration for the Upload plugin when using the default upload provider:

docusaurus/docs/cms/plugins-development/plugins-extension.md

@@ -110,6 +110,28 @@ module.exports = (plugin) => {
 ```
 </details>
 
+:::note
+The `strapi-server.js|ts` file is also where you can override the image function, by replacing the Upload plugin's `generateFileName()` function so that it generates custom image names.
+
+<details>
+<summary>Example of custom file-naming logic</summary>
+
+```js title="./src/extensions/upload/strapi-server.js|ts"
+
+module.exports = (plugin) => {
+  plugin.services.upload.image.generateFileName = (file) => {
+    // Example: prefix a timestamp before the original name
+    return `${Date.now()}_${file.hash}${file.ext}`;
+  };
+
+  return plugin;
+};
+
+```
+</details>
+
+:::
+
 ### Within the register and bootstrap functions
 
 To extend a plugin's interface within `./src/index.js|ts`, use the `bootstrap()` and `register()` [functions](/cms/configurations/functions) of the whole project, and access the interface programmatically with [getters](/cms/plugins-development/server-api#usage).

docusaurus/static/llms-full.txt

@@ -10545,6 +10545,28 @@ module.exports = (plugin) => {
 ```
 </details>
 
+:::note
+The `strapi-server.js|ts` file is also where you can override the image function, by replacing the Upload plugin's `generateFileName()` function so that it generates custom image names.
+
+<details>
+<summary>Example of custom file-naming logic</summary>
+
+```js title="./src/extensions/upload/strapi-server.js|ts"
+
+module.exports = (plugin) => {
+  plugin.services.upload.image.generateFileName = (file) => {
+    // Example: prefix a timestamp before the original name
+    return `${Date.now()}_${file.hash}${file.ext}`;
+  };
+
+  return plugin;
+};
+
+```
+</details>
+
+:::
+
 ### Within the register and bootstrap functions
 
 To extend a plugin's interface within `./src/index.js|ts`, use the `bootstrap()` and `register()` [functions](/cms/configurations/functions) of the whole project, and access the interface programmatically with [getters](/cms/plugins-development/server-api#usage).