How do I access the Rack environment from within Rails?

How do I access the Rack environment from within Rails?

ruby-on-rails ruby rack middleware

ruby

Get ordered list of middleware in a generic rack application?

ruby rake rack middleware

ruby

How do I use a Rack middleware only for certain paths?

ruby rack middleware

ruby

How to use Middleware from an Engine in an Engine

ruby-on-rails ruby middleware rails-engines rack-middleware

ruby

Looking for Example of Faraday Middleware with Error checking

ruby-on-rails ruby middleware faraday

ruby

How to set in a middleware a variable accessible in all my application?

ruby-on-rails ruby ruby-on-rails-3 variables middleware

ruby

Rails 5 Upgrade: No such middleware to insert after: ActionDispatch::ParamsParser (RuntimeError)

ruby rack middleware ruby-on-rails-5

ruby