Once upon a time, somewhere back in mid 2015 I dived into a big adventure that came to an end (for the time being) - the core extension
When you create a new content element by using the record wizard, you'll get a tab-based list of possible content elements to choose from. In the old days, those were PHP classes known as "wizicons" and automatically created by the kickstarter extension. You may guessed it already, it's about
Migrating an old extension can be a tough job, especially when the extension was developed before TYPO3 CMS 6.2 times and thus doesn't follow the current best practises. In this article I'll show you how to migrate the TCA placed in an
ext_tables.php file of a real extension that was originally developed for TYPO3 4.5.
As stated in the previous article, you may also use PSR-7 for AJAX requests. However, the implementation in the backend and the frontend is different. This article explains how you setup so-called "routes" for backend AJAX requests and how eIDs look like for the frontend.
Ah, you have a non-extbase extension whose content is cleanly structured into Classes, Configuration, Resources, etc. But then there are these pesky
modX/index.php files for your backend modules. That's not nice, but there is help: PSR-7. This tutorial shows how to setup your backend modules according to PSR-7.