Common Elixir Anti-Patterns to Avoid

The article by Mateusz Tatarski delves into several prevalent anti-patterns in Elixir programming that can lead to vulnerabilities and inefficiencies in codebases. It discusses issues such as mass assignment vulnerabilities through Ecto changesets, the dangers of using Ecto schemas in database migrations, risks of dynamic atom creation, potential SQL injection flaws, and cross-site scripting (XSS) attacks. Additionally, it warns about smaller Elixir pitfalls like pattern matching with empty maps and keyword lists, and the general comparison flexibility in Elixir. The author suggests various solutions and best practices to mitigate these risks, including using multiple specialized changesets, raw SQL or defined schemas within migration files, and safe string-to-atom conversions. Implementation of the Sobelow library is recommended for detecting and preventing many of these issues.