Rake est un outil puissant et extensible, distribué avec Rails. Il permet d’automatiser toutes sortes d’actions. En voici un rappel de quelques unes peu citées dans les tutorial commun mais pour autant très utiles :

• rake db:migrate:redo
  Rollbacks the database one migration and re migrate up. If you want to rollback more than one step, define STEP=x
• rake db:migrate:reset
  Resets your database using your migrations for the current environment
• rake db:reset
  Drops and recreates the database from db/schema.rb for the current environment.
• rake db:rollback
  Rolls the schema back to the previous version. Specify the number of steps with STEP=n
• rake db:schema:dump
  Create a db/schema.rb file that can be portably used against any DB supported by AR
• rake db:schema:load
  Load a schema.rb file into the database

• rake log:clear
  Truncates all *.log files in log/ to zero bytes

• rake tmp:cache:clear
  Clears all files and directories in tmp/cache
• rake tmp:clear
  Clear session, cache, and socket files from tmp/
• rake tmp:create
  Creates tmp directories for sessions, cache, and sockets
• rake tmp:pids:clear
  Clears all files in tmp/pids
• rake tmp:sessions:clear
  Clears all files in tmp/sessions
• rake tmp:sockets:clear
  Clears all files in tmp/sockets

• rake notes
  Enumerate all annotations
• rake notes:fixme
  Enumerate all FIXME annotations
• rake notes:optimize
  Enumerate all OPTIMIZE annotations
• rake notes:todo
  Enumerate all TODO annotations

• rake rails:freeze:edge
  Lock to latest Edge Rails or a specific revision with REVISION=X (ex: REVISION=4021) or a tag with TAG=Y (ex: TAG=rel_1-1-0)
• rake rails:freeze:gems
  Lock this application to the current gems (by unpacking them into vendor/rails)
• rake rails:unfreeze
  Unlock this application from freeze of gems or edge and return to a fluid use of system gems
• rake rails:update
  Update both configs, scripts and public/javascripts from Rails
• rake rails:update:configs
  Update config/boot.rb from your current rails install
• rake rails:update:javascripts
  Update your javascripts from your current rails install
• rake rails:update:scripts
  Add new scripts to the application script/ directory

• rake routes
  Print out all defined routes in match order, with names.