extract controller base class

app/controllers/stopwatch_controller.rb

@@ -0,0 +1,12 @@
+# base class for stopwatch controllers
+class StopwatchController < ApplicationController
+  helper :timelog, :custom_fields
+
+  before_action :require_login
+
+  private
+
+  def authorize_edit_time
+    @time_entry.editable_by?(User.current) or deny_access
+  end
+end

app/controllers/stopwatch_timers_controller.rb

@@ -8,10 +8,8 @@
 # - same for project, unless we are in a project context
 # - focus first field that needs an action, depending on above
 #
-class StopwatchTimersController < ApplicationController
-  helper :timelog, :custom_fields
+class StopwatchTimersController < StopwatchController
 
-  before_action :require_login
   before_action :find_optional_data, only: %i(new create)
   before_action :authorize_log_time, only: %i(new create start stop current)
   before_action :find_time_entry, only: %i(edit update start stop)