This middleware is responsible for logging exceptions and showing a debugging page in case the request is local.

Methods
C
N
Constants
RESCUES_TEMPLATE_PATH = File.join(File.dirname(__FILE__), 'templates')
 
Class Public methods
new(app)

Source: show | on GitHub 

# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 10
def initialize(app)
  @app = app
end
Instance Public methods
call(env)

Source: show | on GitHub 

# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 14
def call(env)
  begin
    response = @app.call(env)

    if response[1]['X-Cascade'] == 'pass'
      body = response[2]
      body.close if body.respond_to?(:close)
      raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"
    end
  rescue Exception => exception
    raise exception if env['action_dispatch.show_exceptions'] == false
  end

  exception ? render_exception(env, exception) : response
end