Unschema - rebase your schema.rb

Build Status Gem Version Code Climate

Splits your schema.rb into separate migrations per table.

Every table migration contains a create_table and additional add_index calls.

We use it to cleanup older projects, that gets reused as codebase for new projects.


Add this line to your application's Gemfile:

gem 'unschema'

And then execute:

$ bundle

Or install it yourself as:

$ gem install unschema


usage: unschema [SCHEMA_FILE] [MIGRATIONS_DIR]


  • Auto-detect Rails directory and use correct defaults.
  • Generate prettier migrations (ident, options hashes, newlines)


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request