Class: Proscenium::Middleware::Engines

Inherits:
Esbuild show all
Defined in:
lib/proscenium/middleware/engines.rb

Overview

This middleware handles requests for assets in Rails engines. An engine that wants to expose its assets via Proscenium to the application must add itself to the list of engines in the Proscenium config options ‘Proscenium.config.engines`.

For example, we have a gem that exposes a Rails engine.

module Gem1
  class Engine < ::Rails::Engine
    config.proscenium.engines['gem1'] = root
  end
end

When this gem is installed in any Rails application, its assets will be available at the URL ‘/gem1/…`. For example, if the gem has a file `lib/styles.css`, it can be requested at `/gem1/lib/styles.css`.

Instance Method Summary collapse

Methods inherited from Esbuild

#attempt

Methods inherited from Base

attempt, #initialize, #renderable!

Constructor Details

This class inherits a constructor from Proscenium::Middleware::Base

Instance Method Details

#engine ⇒ Object 



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# File 'lib/proscenium/middleware/engines.rb', line 30

def engine
  @engine ||= Proscenium.config.engines.find do |k, _|
    @request.path.start_with?("/#{k}")
  end
end

#engine_name ⇒ Object 



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# File 'lib/proscenium/middleware/engines.rb', line 36

def engine_name
  engine.first
end

#real_path ⇒ Object 



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# File 'lib/proscenium/middleware/engines.rb', line 22

def real_path
  @real_path ||= Pathname.new(@request.path.delete_prefix("/#{engine_name}")).to_s
end

#root_for_readable ⇒ Object 



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# File 'lib/proscenium/middleware/engines.rb', line 26

def root_for_readable
  engine.last
end