Cannot generate migrations on rails 2.3.4

Question

I used to work with rails 2.3.2 before and then I decided to upgrade to version 2.3.4.

Today I tried to generate a migration(I could do this fine with version 2.3.2) and I got the following error message:

C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb:812:in `const_missing': uninitialized constant ActiveSupport (NameError) from D:/Proyectos/Cursometro/www/config/environment.rb:33 from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb:111:in `run' from D:/Proyectos/Cursometro/www/config/environment.rb:15 from D:/Proyectos/Cursometro/www/config/environment.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/commands/generate.rb:1 from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/commands/generate.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from script\generate:3

I don't know why this is happening. Everything worked fine in 2.3.2 and now it doesn't.

I have always had problems migrating from one version of rails using Netbeans. Btw, are you working on the Ruby or Jruby? — Snehal
– Snehal, Commented May 26, 2010 at 21:03

Snehal · Accepted Answer · 2010-05-26 19:35:41Z

1

Activesupport gem is not installed on your machine. Try running this command:

gem install activesupport

Incase it doesn't work, try this

gem update --system gem update --source http://gems.rubyonrails.org

answered May 26, 2010 at 19:35

Snehal

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Brian Roisentul Over a year ago

Snehal: neither of those options worked. I'm getting the same error. I'll give you a vote for the try.

Brian Roisentul · Accepted Answer · 2010-05-27 13:07:26Z

Well I could solve this by placing the following line(written below) once the Rails::Initializer.run do |config| block ends(it was inside this block before).

ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS.merge!(:standard => "%B %d, %Y")

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