Extending Elixir HTML DSLs with Attribute Support

Writing clean, maintainable web interfaces in Elixir often requires custom tools that go beyond standard templates. By extending a Domain Specific Language (DSL), you can generate HTML dynamically and efficiently. This text-based course guides you through the process of adding robust HTML attribute support to an Elixir-based markup generator using metaprogramming. You will start with the foundational concepts of Elixir syntax trees, learn how macros parse input, and gradually build a flexible system that handles dynamic attributes. What you will learn: Understand the core mechanics of Elixir AST and quote/unquote mechanics; Design an HTML DSL that accepts dynamic key-value attributes; Implement Elixir macros to transform custom code into optimized HTML strings; Handle edge cases in attribute formatting, escaping, and nesting; Apply modern Elixir code organization practices and write clean unit tests for macros. We begin with basic definitions and AST structure before moving into step-by-step macro construction and real-world implementation patterns. This course is designed for intermediate Elixir developers who are new to metaprogramming and want to understand how HTML DSLs work under the hood. Start reading to unlock the power of Elixir metaprogramming today.