Hanami guides logo

V2.0: Cookies

Actions can set cookies on outgoing requests via the response object.

module Bookshelf
  module Actions
    module Books
      class Index < Bookshelf::Action
        def handle(request, response)
          response.cookies["tasty_cookie"] = "strawberry"
        end
      end
    end
  end
end

Cookies subsequently sent by the browser can be read from the request.

module Bookshelf
  module Actions
    module Books
      class Index < Bookshelf::Action
        def handle(request, response)
          request.cookies["tasty_cookie"] # => "strawberry"
        end
      end
    end
  end
end

You can set one or more of the following options for cookies issued by actions using the action cookies config on your app.

  • :domain - String (nil by default), the domain
  • :path - String (nil by default), a relative URL
  • :max_age - Integer (nil by default), cookie duration expressed in seconds
  • :secure - Boolean (true by default if using SSL), restrict cookies to secure connections
  • :httponly - Boolean (true by default), restrict JavaScript access to cookies
# config/app.rb

module Bookshelf
  class App < Hanami::App
    config.actions.cookies = {
      domain: "hanami.example.com",
      secure: true,
      httponly: true,
      path: "/foo",
      max_age: 300
    }
  end
end

This configuration can be overridden within an action passing a hash, which has a value key representing the value of the cookie, and any properties to override.

module Bookshelf
  module Actions
    module Books
      class Index < Bookshelf::Action
        def handle(request, response)
          response.cookies["tasty_cookie"] = "strawberry"

          response.cookies["longer_lived_cookie"] = {
            value: "anzac_biscuit",
            max_age: 604800
          }
        end
      end
    end
  end
end

Removing cookies

To remove a cookie, assign it the value nil.

response.cookies["tasty_cookie"] = nil

Disabling cookies

To prevent cookies from being set in your actions, provide the following config to your app:

# config/app.rb

module Bookshelf
  class App < Hanami::App
    config.actions.cookies = nil
  end
end