freshen :expires option with duration support and add expiry metadata to cookies

actionpack/lib/action_dispatch/middleware/cookies.rb

@@ -361,6 +361,10 @@ module ActionDispatch
       end
 
       def handle_options(options) # :nodoc:
+        if options[:expires].respond_to?(:from_now)
+          options[:expires] = options[:expires].from_now
+        end
+
         options[:path] ||= "/"
 
         if options[:domain] == :all || options[:domain] == "all"
@@ -488,6 +492,14 @@ module ActionDispatch
         def request; @parent_jar.request; end
 
       private
+        def expiry_options(options)
+          if options[:expires].respond_to?(:from_now)
+            { expires_in: options[:expires] }
+          else
+            { expires_at: options[:expires] }
+          end
+        end
+
         def parse(name, data); data; end
         def commit(options); end
     end
@@ -569,7 +581,7 @@ module ActionDispatch
         end
 
         def commit(options)
-          options[:value] = @verifier.generate(serialize(options[:value]))
+          options[:value] = @verifier.generate(serialize(options[:value]), expiry_options(options))
 
           raise CookieOverflow if options[:value].bytesize > MAX_COOKIE_SIZE
         end
@@ -609,7 +621,7 @@ module ActionDispatch
         end
 
         def commit(options)
-          options[:value] = @encryptor.encrypt_and_sign(serialize(options[:value]))
+          options[:value] = @encryptor.encrypt_and_sign(serialize(options[:value]), expiry_options(options))
 
           raise CookieOverflow if options[:value].bytesize > MAX_COOKIE_SIZE
         end

actionpack/test/dispatch/cookies_test.rb

@@ -278,6 +278,11 @@ class CookiesTest < ActionController::TestCase
     def encrypted_cookie
       cookies.encrypted["foo"]
     end
+
+    def cookie_expires_in_two_hours
+      cookies[:user_name] = { value: "assain", expires: 2.hours }
+      head :ok
+    end
   end
 
   tests TestController
@@ -1235,6 +1240,33 @@ class CookiesTest < ActionController::TestCase
     assert_equal "bar", @controller.encrypted_cookie
   end
 
+  def test_signed_cookie_with_expires_set_relatively
+    cookies.signed[:user_name] = { value: "assain", expires: 2.hours }
+
+    travel 1.hour
+    assert_equal "assain", cookies.signed[:user_name]
+
+    travel 2.hours
+    assert_nil cookies.signed[:user_name]
+  end
+
+  def test_encrypted_cookie_with_expires_set_relatively
+    cookies.encrypted[:user_name] = { value: "assain", expires: 2.hours }
+
+    travel 1.hour
+    assert_equal "assain", cookies.encrypted[:user_name]
+
+    travel 2.hours
+    assert_nil cookies.encrypted[:user_name]
+  end
+
+  def test_vanilla_cookie_with_expires_set_relatively
+    travel_to Time.utc(2017, 8, 15) do
+      get :cookie_expires_in_two_hours
+      assert_cookie_header "user_name=assain; path=/; expires=Tue, 15 Aug 2017 02:00:00 -0000"
+    end
+  end
+
   private
     def assert_cookie_header(expected)
       header = @response.headers["Set-Cookie"]

actionpack/test/dispatch/session/cookie_store_test.rb

@@ -26,6 +26,11 @@ class CookieStoreTest < ActionDispatch::IntegrationTest
       render plain: Rack::Utils.escape(Verifier.generate(session.to_hash))
     end
 
+    def set_session_value_expires_in_five_hours
+      session[:foo] = "bar"
+      render plain: Rack::Utils.escape(Verifier.generate(session.to_hash, expires_in: 5.hours))
+    end
+
     def get_session_value
       render plain: "foo: #{session[:foo].inspect}"
     end
@@ -283,7 +288,7 @@ class CookieStoreTest < ActionDispatch::IntegrationTest
 
         cookies[SessionKey] = SignedBar
 
-        get "/set_session_value"
+        get "/set_session_value_expires_in_five_hours"
         assert_response :success
 
         cookie_body = response.body
@@ -299,7 +304,7 @@ class CookieStoreTest < ActionDispatch::IntegrationTest
         get "/no_session_access"
         assert_response :success
 
-        assert_equal "_myapp_session=#{cookie_body}; path=/; expires=#{expected_expiry}; HttpOnly",
+        assert_equal "_myapp_session=#{cookies[SessionKey]}; path=/; expires=#{expected_expiry}; HttpOnly",
           headers["Set-Cookie"]
       end
     end