Hands-On RESTful API Design Patterns and Best Practices

Interceptors

There are cases, such as request logging, error handling, or authentication handling, where we need an action invoked by the framework BEFORE or AFTER a specific event, and those sorts of invocations will happen through a Revel function called interceptors. In other words, interceptors are a function that gets invoked by the framework. Revel supports three forms of interceptors—function interceptor, method interceptor, and controller interceptor.