Getting Crazy with Form Themes

We already learned all the form basics. But, controlling how you render your forms? That's a huge and super-fun topic all on its own. Themes! Form variables! Rainbows! Let's go! Creating your own form theme Controller form variables Using form variables in your theme Rendering a field 100% by hand Controller variables in your form type Adding a "help" text system that renders for all fields Leveraging a FormTypeExtension to tweak any field in your system Customizing how a single field renders This stuff is black magic: learn these fundamentals, and you'll be unstoppable!