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Hocus pocus: painless headers customization of REST API requests in Flutter

The vast majority of applications consume RESTful APIs, exchanging data in JSON format, and appending some configuration in headers. The vanilla solution includes a lot of repetitive code and is a perfect target for code optimization, especially in big projects.

Flutter provides an unbelievably productive development experience, it’s an undeniable fact. Still, using tools like code generation combined with the knowledge of Dart language features and packages ecosystem may take it even further.

Code Sample

It's possible to significantly minimize the amount of required code while keeping all the functionality and go from β€œbefore” to β€œafter” and beyond in just a few steps, leveraging code generation with retrofit package, using API request interceptors from dio package, and creating custom annotations thanks to Dart language features.

Learn more about this approach in my blog "Hocus pocus: painless headers customization of REST API requests in Flutter" https://link.medium.com/1PFJriUYvEb.

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