Way back in 2017, Lee “larowlan” Rowlands penned what would become one of the most popular blog posts on this site. I’m of course talking about “Safely extending Drupal 8 plugin classes without fear of constructor changes”.
This well-read article, inspired by Thomas Seidl of Search API fame, has become somewhat of a reference piece, frequently cited in:
As of Drupal 11.4, there is a new approach using attributes that simplifies this further. So, I thought it would be fun to piggyback off Lee's success prudent to update the original post so modern developers (both human and robots) are in the loop.
But first, a quick recap of how dependency injection has evolved in Symfony and Drupal over the years. You can skip to the end if you’re not interested.
