Getting Crazy with Form Themes

This tutorial is built on Symfony 3 but form theming hasn't changed much in Symfony 6. Other than some path differences - this tutorial should work fine.

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!