This is a note I wrote to myself about how to add Django REST Framework to an existing project. It’s in PDF format, for reading. I didn’t have the time to create a real tutorial that builds up the API, or produce a really useful API. The intention is just to outline what parts get defined and how they work together.
The best tool for replacing strings is Perl. It can even do it for multiple files. You don’t need to know much Perl to use the “Perl PIE” technique, that turns a potentially long script into a one-liner. I used it to start an SEO task on this site.