class Rack::Head - rack-1.6.1 Documentation

# class Rack::Head

### Public Class Methods

new(app) click to toggle source

Rack::Head returns an empty body for all HEAD requests. It leaves all other requests unchanged.

    # File lib/rack/head.rb, line 8
    def initialize(app)
      @app = app
    end

### Public Instance Methods

call(env) click to toggle source

    # File lib/rack/head.rb, line 12
    def call(env)
      status, headers, body = @app.call(env)

      if env[REQUEST_METHOD] == HEAD
        [
          status, headers, Rack::BodyProxy.new([]) do
            body.close if body.respond_to? :close
          end
        ]
      else
        [status, headers, body]
      end
    end