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Rails 3.1.0.rc5 rake problem

Having huge headaches with migrations that don't seem to work. I don’t know why - give me iritis! I don’t know what a visitor is.

$ bundle exec rake db:migrate --trace ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment ** Invoke db:load_config (first_time) ** Invoke rails_env (first_time) ** Execute rails_env ** Execute db:load_config ** Execute db:migrate rake aborted! undefined method `visitor' for # <ActiveRecord::ConnectionAdapters::SQLite3Adapter:0x007fcdcbdd8308> /Users/danbronsema/.rvm/gems/ ruby-1.9.2-p290@edge /gems/arel-2.1.5/lib/arel/tree_manager.rb:19:in `visitor'

Below is the gemlist

 actionmailer (3.1.0.rc5) actionpack (3.1.0.rc5) activemodel (3.1.0.rc5) activerecord (3.1.0.rc5) activeresource (3.1.0.rc5) activesupport (3.1.0.rc5) ansi (1.3.0) arel (2.1.5) bcrypt-ruby (2.1.4) builder (3.0.0) bundler (1.0.17) coffee-rails (3.1.0.rc.5) coffee-script (2.2.0) coffee-script-source (1.1.2) erubis (2.7.0) execjs (1.2.4) hike (1.2.0) i18n (0.6.0) jquery-rails (1.0.12) mail (2.3.0) mime-types (1.16) multi_json (1.0.3) polyglot (0.3.2) rack (1.3.2) rack-cache (1.0.2) rack-mount (0.8.1) rack-ssl (1.3.2) rack-test (0.6.1) rails (3.1.0.rc5) railties (3.1.0.rc5) rake (0.9.2) rdoc (3.9.1) sass (3.1.7) sass-rails (3.1.0.rc.5) sprockets (2.0.0.beta.13) sqlite3 (1.3.4) thor (0.14.6) tilt (1.3.2) treetop (1.4.10) turn (0.8.2) tzinfo (0.3.29) uglifier (1.0.0)
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2 answers

This is a bug in arel 2.1.5 .

Fix this by adding gem "arel", "2.1.4" to your Gemfile and running bundle update arel .

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Just repeating Octupus-Paul's solution as an answer instead of a comment. It is easier to find.

You can find the solution here ruby-forum.com/topic/2317524 or here comments.gmane.org/gmane.comp.lang.ruby.rails/296600 - Octopus-Paul

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