The RouteSet contains a collection of Route instances, representing the routes typically defined in config/routes.rb.

Namespace

Module

Class

Methods

Instance Public methods

from_requirements(requirements)

Returns a Route matching the given requirements, or nil if none are found.

This is intended for use by tools such as Language Servers.

Given the routes are defined as:

resources :posts

Then the following will return the Route for the show action:

Rails.application.routes.from_requirements(controller: “posts”, action: “show”)

📝 Source code 
# File actionpack/lib/action_dispatch/routing/route_set.rb, line 29
      def from_requirements(requirements)
        routes.find { |route| route.requirements == requirements }
      end
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