Class: Roda::RodaPlugins::Middleware::Forwarder

Inherits:
Object
  • Object
show all
Defined in:
lib/roda/plugins/middleware.rb

Overview

Forward instances are what is actually used as middleware.

Instance Method Summary collapse

Constructor Details

#initialize(mid, app) ⇒ Forwarder

Store the current middleware and the next middleware to call.



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# File 'lib/roda/plugins/middleware.rb', line 52

def initialize(mid, app)
  @mid = mid
  @app = app
end

Instance Method Details

#call(env) ⇒ Object

When calling the middleware, first call the current middleware. If this returns a result, return that result directly. Otherwise, pass handling of the request to the next middleware.



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# File 'lib/roda/plugins/middleware.rb', line 60

def call(env)
  res = nil

  call_next = catch(:next) do
    env[@mid.opts[:middleware_env_var]] = true
    res = @mid.call(env)
    false
  end

  if call_next
    @app.call(env)
  else
    res
  end
end