grape

https://github.com/intridea/grape

Ruby

An opinionated framework for creating REST-like APIs in Ruby.

Gitlab::Database::MigrationHelpers#rename_column_concurrently

Renames a column without requiring downtime.

Concurrent renames work by using database triggers to ensure both the
old and new column are in sync. However, this method will _not_ remove
the triggers or the old column automatically; this needs to be done
manually in a post-deployment migration. This can be done using the
method `cleanup_concurrent_column_rename`.

table - The name of the database table containing the column.
old - The old column name.
new - The new column name.
type - The type of the new column. If no type is given the old column's
       type is used.

Source | Google | Stack overflow

Edit

git clone [email protected]:intridea/grape.git
cd grape
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Gitlab--Database--MigrationHelpers-rename_column_concurrently-for-pr

# Commit to git

git add git commit -m "better docs for Gitlab::Database::MigrationHelpers#rename_column_concurrently"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Gitlab--Database--MigrationHelpers-rename_column_concurrently-for-pr

hub pull-request

# Celebrate!