migration review

  • rake db:migrate VERSION=20080906120000 ( if it is run already,  won’t be run again)
  • rake db:migrate:up VERSION=20080906120000
  • rake db:migrate:redo STEP=3
  • rake db:migrate:redo VERSION=20080906120000
  • rake db:rollback This will run the down method from the latest migration ( check out scheme_migrations to see which one is the latest; if many people are working at the same time, you will be surprised about the result. If the latest migration file is not on your desktop, it won’t run anything.)
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