> For the complete documentation index, see [llms.txt](https://logbox.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://logbox.ortusbooks.com/master/extending-logbox/creating-custom-appenders/dealing-with-custom-layouts.md).

# Dealing With Custom Layouts

In order for an appender to deal with custom layouts, you must use the layout methods when preparing to log your messages. Below is a simple example from the console appender of how to do this:

```javascript
if( hasCustomLayout() ){
  entry = getCustomLayout().format(loge);
}
else{
  entry = "#severityToString(loge.getseverity())# #loge.getCategory()# #loge.getmessage()# ExtraInfo: #loge.getextraInfoAsString()#";
}

// Log message to system.out
instance.out.println(entry);
```

As you can see, all you need to do is have an `if` statement that checks whether the appender has a custom layout or not and then assign the return of the layout as your message to log.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://logbox.ortusbooks.com/master/extending-logbox/creating-custom-appenders/dealing-with-custom-layouts.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
