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ar-backup

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资源说明：Active Record backup is a Rails plugin which lets you backup your database schema and content in a schema.rb file and fixtures.

=ActiveRecord-backup

Using rake tasks, dump your schema and data into yml files. One folder gets created per SVN revision. You can then simply load any previous data using rake.

prerequisite: Your project must be under SVN.

==Usage:

rake backup:db:dump               # create a backup folder containing your db schema and content data (see backup/{env}/build_{build number})
rake backup:db:extract_content    # Create YAML fixtures from your DB content
rake backup:db:extract_schema     # Dump the db schema
rake backup:db:load               # load your backed up data from a previous build. rake backup:db:load BUILD=1182 or rake backup:db:load BUILD=1182 DUMP_ENV=production


==Example

    rake backup:db:dump

    rake backup:db:load BUILD=2547

==Capistrano 2 usage example   

(you first need to create a backup folder) 

    set :backup_dir, "#{deploy_to}/backup"

    before :deploy do
      db.backup
      db.move_backup
    end

    namespace :db do
      desc 'create the production database'
      task :create do
        run "cd #{current_release} && rake db:create RAILS_ENV=production"
      end

      desc 'dump the database schema and content'
      task :backup do
        run "cd #{current_release} && rake backup:db:dump RAILS_ENV=production"
      end

      desc 'timestamp the backup file'
      task :move_backup do
        run "cd #{current_release} && mv backup/production #{backup_dir}/production_#{Time.now.strftime("%Y-%m-%d_%H-%M")}"
      end
    end

==Contributors
 Cyril Mougel : cyril.mougel@gmail.com (ar_backup windows compatible and the revision number is parsed in a more efficient way)

Copyright (c) 2007 Matt Aimonetti, released under the MIT license

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