SaferMigrations

SaferMigrations provides safer methods for Active Record Migrations.

Installation

Install the gem and add to the application's Gemfile by executing:

$ bundle add safer_migrations

If bundler is not being used to manage dependencies, install the gem by executing:

$ gem install safer_migrations

Usage

This gem provides the following methods for Active Record Migrations.

safer_remove_column
safer_remove_columns
safer_rename_column
t.safer_remove
t.safer_rename

These methods check whether a column that will be removed is still used in a model. If a model uses it, these methods raise an error. In that case, you should specify a column to ignored_columns first.

Except for checking it, the behavior is same as well as the Rail's default methods.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.