stonean

In the event you have multiple versions of the Rails gem and want to generate an older version, you can do the following:
rails _2.0.2_ myapp
This will create a new myapp directory with Rails version 2.0.2.

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Nice new rake command to rollback one migration and migrate back up. If you need to go further than one step back pass the STEP=x parameter.
#Roll back 3 migrations and migrate back to current version.rake db:migrate:redo STEP=3

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Writing your own custom Rake task is very simple and almost not worthy of a blog post, but I can’t remember everything, so it’s here for reference.
In your lib/tasks directory create a file with the extension .rake. i.e. print.rake.

namespace :print do
task :one do
attention “One”
end

task [...]

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