Racket self-writing code function

Let's say I have DrRacket open with a source file with some code in it and a part of the code writes code in the same file. I did this with open-output-file and I can't see the code updating in DrRacket.

Is there a function or a methodology to write code in DrRacket that writes code that is then evaluated and in the same time I can see the code in the IDE after it is written for rapid-feedback?