Rails4InvalidForeignKeyMigrationChecker

When there are 'users'table and 'posts' table exist and execute add_foreignkey(:posts, :user).

remove_foreign_key :users, :posts is correct migration. remove_foreign_key :users, :post is invalid migration but rails 4 not raise error and rails 5 raise error. So if you upgrade rails 4 to 5, your migration fail.

This gem check this invalid migration and raise error.

Add this line to your application's Gemfile:

gem 'rails_4_invalid_foreign_key_migration_checker'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rails_4_invalid_foreign_key_migration_checker

$  RAILS_ENV=test bundle exec rake db:drop db:create db:migrate

If any migration isn't correct, it will be failed. (This gem work only RAILS_ENV=test)

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec 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 tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/rails_4_invalid_foreign_key_migration_checker. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the Rails4InvalidForeignKeyMigrationChecker project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.