Compatibility for Redmine v4.x

[withanhdammit]

Have tested installing on Redmine 4.x

Environment:
  Redmine version                4.2.9.stable
  Ruby version                   2.7.4-p191 (2021-07-07) [x86_64-linux-gnu]
  Rails version                  5.2.8.1
  Environment                    production
  Database adapter               Mysql2
  Mailer queue                   ActiveJob::QueueAdapters::AsyncAdapter
  Mailer delivery                smtp
SCM:
  Git                            2.30.2
  Filesystem                     
Redmine plugins:
  redcase                        1.0
  redmine_agile                  1.4.12
  redmine_auto_assign_group      0.1.2

'bundle exec rake redmine:plugins:migrate RAILS_ENV=production' results in:

(in /opt/redmine)
rake aborted!
NoMethodError: undefined method `to_prepare' for ActionDispatch::Callbacks:Class
Did you mean?  to_param
/opt/redmine/plugins/redmine_my_page/init.rb:7:in `<top (required)>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `block in require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:257:in `load_dependency'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `require'
/opt/redmine/lib/redmine/plugin.rb:187:in `block in load'
/opt/redmine/lib/redmine/plugin.rb:178:in `each'
/opt/redmine/lib/redmine/plugin.rb:178:in `load'
/opt/redmine/config/initializers/30-redmine.rb:20:in `<top (required)>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:285:in `load'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:285:in `block in load'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:257:in `load_dependency'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:285:in `load'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/engine.rb:663:in `block in load_config_initializer'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/notifications.rb:170:in `instrument'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/engine.rb:662:in `load_config_initializer'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/engine.rb:620:in `block (2 levels) in <class:Engine>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/engine.rb:619:in `each'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/engine.rb:619:in `block in <class:Engine>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:32:in `instance_exec'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:32:in `run'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:61:in `block in run_initializers'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:50:in `each'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:50:in `tsort_each_child'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:60:in `run_initializers'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application.rb:361:in `initialize!'
/opt/redmine/config/environment.rb:16:in `<top (required)>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `block in require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:257:in `load_dependency'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application.rb:337:in `require_environment!'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application.rb:520:in `block in run_tasks_blocks'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/rake-13.0.6/exe/rake:27:in `<top (required)>'
Tasks: TOP => redmine:plugins:migrate => environment

This led me to https://www.redmine.org/boards/2/topics/60045, where I tried the fix described in https://www.redmine.org/boards/2/topics/60045?r=60157#message-60157

Which resulted in:

(in /opt/redmine)
rake aborted!
NoMethodError: undefined method `alias_method_chain' for ActivitiesController:Class
Did you mean?  alias_method
/opt/redmine/plugins/redmine_my_page/lib/my_page_patches/activities_controller_patch.rb:11:in `block in included'
/opt/redmine/plugins/redmine_my_page/lib/my_page_patches/activities_controller_patch.rb:7:in `class_eval'
/opt/redmine/plugins/redmine_my_page/lib/my_page_patches/activities_controller_patch.rb:7:in `included'
/opt/redmine/plugins/redmine_my_page/init.rb:22:in `include'
/opt/redmine/plugins/redmine_my_page/init.rb:22:in `block (2 levels) in <top (required)>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:426:in `instance_exec'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:426:in `block in make_lambda'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:198:in `block (2 levels) in halting'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:606:in `block (2 levels) in default_terminator'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:605:in `catch'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:605:in `block in default_terminator'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:199:in `block in halting'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:513:in `block in invoke_before'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:513:in `each'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:513:in `invoke_before'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/callbacks.rb:131:in `run_callbacks'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/reloader.rb:89:in `prepare!'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application/finisher.rb:63:in `block in <module:Finisher>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:32:in `instance_exec'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:32:in `run'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:61:in `block in run_initializers'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/initializable.rb:60:in `run_initializers'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application.rb:361:in `initialize!'
/opt/redmine/config/environment.rb:16:in `<top (required)>'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `block in require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:257:in `load_dependency'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.8.1/lib/active_support/dependencies.rb:291:in `require'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application.rb:337:in `require_environment!'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8.1/lib/rails/application.rb:520:in `block in run_tasks_blocks'
/opt/redmine/vendor/bundle/ruby/2.7.0/gems/rake-13.0.6/exe/rake:27:in `<top (required)>'
Tasks: TOP => redmine:plugins:migrate => environment

Which led me to https://www.justinweiss.com/articles/rails-5-module-number-prepend-and-the-end-of-alias-method-chain/, but that's way over my head.

Hoping this plugin can be updated to work with Redmine 4.x+

[withanhdammit]

Apparently, I am an idiot. I must have had an old version cached locally because I just downloaded a fresh copy from here and it installed and worked great.

Issue resolved.