<p>I am working on rails project and I am trying to get exceptions to be logged to the rails log files.  I know I can call <code>logger.error $!</code> to get the first line of the exception logged to the file.  But, I want to get the entire trace stack logged as well.  How do I log the entire trace back of an exception using the default rails logger?</p>

```
logger.error caller.join("\n")
```
should do the trick.