How can I create custom middleware in Rails?

How can I create custom middleware in Rails?

To create custom middleware in Rails, you need to define a class that responds to the call method.

Can you show me a simple example of a middleware class?

Sure! Here's a basic example:

class MyCustomMiddleware
  def initialize(app)
    @app = app
  end

  def call(env)
    # Your custom logic here
    @app.call(env)
  end
end

How do I add this middleware to my Rails application?

You can add it in your application configuration file, typically in config/application.rb:

config.middleware.use MyCustomMiddleware

What are some common use cases for custom middleware?

Common use cases include logging, authentication, and modifying request/response objects.