Data Migrater

Data Migration is like Migrate, but it will changes the data of your tables, not your schema. This gems creates a file where you can write code to make change along you schema changes.

Install

Extracts the necessary files including a migrate that create a table used to keep you data migration version.

rails g data_migrater:install

Then execute the migrations to create the table.

rake db:migrate

Usage

Now we can create a data migration with name we want.

rails g data_migrater:create name

Check your db/data_migrate folder, the data migration will be there. Next time your application run, all pending data migration will be execute.

Test

Before send pull request, check if specs is passing.

rspec spec

Code Style

And check if the code style is good.

rubocop --debug --display-cop-names