Rails 4.1.0.beta1 upgrade fails
ruby, ruby-on-rails, ruby-on-rails-4
Solution
It's failing because of Ransack dependency's Polyamorous.
Here's an open issue in `activerecord-hackery/polyamorous` to keep an eye on https://github.com/activerecord-hackery/polyamorous/issues/6
UPDATE
To get it work with 4.1, put this in your `Gemfile`
gem 'formtastic', github: 'justinfrench/formtastic'
gem 'ransack', github: 'activerecord-hackery/ransack', branch: 'rails-4.1'
gem 'polyamorous', github: 'activerecord-hackery/polyamorous'
gem 'activeadmin', github: 'gregbell/active_admin'
Problem
I recently tried to install rails `4.1.0.beta1`, but `rails s` results in the following error. ``` [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/core_ext/module/aliasing.rb:32:in `alias_method': undefined method `graft' for class `ActiveRecord::Associations::JoinDependency' (NameError) [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/core_ext/module/aliasing.rb:32:in `alias_method_chain' [RVM]/gems/ruby-2.0.0-p247/gems/polyamorous-0.6.4/lib/polyamorous/join_dependency.rb:7:in `block in included' [RVM]/gems/ruby-2.0.0-p247/gems/polyamorous-0.6.4/lib/polyamorous/join_dependency.rb:5:in `class_eval' [RVM]/gems/ruby-2.0.0-p247/gems/polyamorous-0.6.4/lib/polyamorous/join_dependency.rb:5:in `included' [RVM]/gems/ruby-2.0.0-p247/gems/polyamorous-0.6.4/lib/polyamorous.rb:20:in `include' [RVM]/gems/ruby-2.0.0-p247/gems/polyamorous-0.6.4/lib/polyamorous.rb:20:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/ransack-1.1.0/lib/ransack/adapters/active_record/3.1/context.rb:3:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/ransack-1.1.0/lib/ransack/adapters/active_record/3.2/context.rb:2:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/ransack-1.1.0/lib/ransack/adapters/active_record/context.rb:2:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/ransack-1.1.0/lib/ransack/adapters/active_record.rb:12:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/ransack-1.1.0/lib/ransack.rb:22:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/bundler/gems/active_admin-85b9f8164809/lib/active_admin.rb:2:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency' [RVM]/gems/ruby-2.0.0-p247/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require' [RVM]/gems/ruby-2.0.0-p247/bundler/gems/active_admin-85b9f8164809/lib/activeadmin.rb:1:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/bundler-1.3.5/lib/bundler.rb:132:in `require' [RAILS_ROOT}/config/application.rb:8:in `<top (required)>' [RVM]/gems/ruby-2.0.0-p247/gems/railties-4.1.0.beta1/lib/rails/commands/commands_tasks.rb:79:in `require' [RVM]/gems/ruby-2.0.0-p247/gems/railties-4.1.0.beta1/lib/rails/commands/commands_tasks.rb:79:in `block in server' [RVM]/gems/ruby-2.0.0-p247/gems/railties-4.1.0.beta1/lib/rails/commands/commands_tasks.rb:76:in `tap' [RVM]/gems/ruby-2.0.0-p247/gems/railties-4.1.0.beta1/lib/rails/commands/commands_tasks.rb:76:in `server' [RVM]/gems/ruby-2.0.0-p247/gems/railties-4.1.0.beta1/lib/rails/commands/commands_tasks.rb:40:in `run_command!' [RVM]/gems/ruby-2.0.0-p247/gems/railties-4.1.0.beta1/lib/rails/commands.rb:17:in `<top (required)>' ``` This is my current system. - ruby 2.0.0 - rails 4.1.0.beta1 Why is it failing?