Improving Data Validation and Sanitization in Elixir with GuardedStruct

The article highlights the challenges developers face in managing data validation and sanitization within Elixir applications, especially with various business logic requirements. It presents the GuardedStruct library as a solution that offers features for building, validating, and sanitizing data structures consistently. This library aims to make data handling more straightforward even for those with limited Elixir experience, enhancing the security and integrity of the application data. The article delves into the library's functionalities, including how it handles nested data structures, custom validations, and the use of macros to simplify complex operations. It illustrates the library's capabilities with examples, showcasing how developers can define validation rules, manage nested fields, and combine various forms of data while maintaining a clean and flexible architecture. Overall, GuardedStruct is positioned as a powerful tool for developers looking to ensure their applications adhere to strict data handling protocols.