pg_search

https://github.com/casecommons/pg_search

Ruby

pg_search builds ActiveRecord named scopes that take advantage of PostgreSQL’s full text search

User.search_with_secondary_emails

searches user by given pattern
it compares name, email, username fields and user's secondary emails with given pattern
This method uses ILIKE on PostgreSQL and LIKE on MySQL.

Source | Google | Stack overflow

Edit

git clone [email protected]:casecommons/pg_search.git
cd pg_search
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-User-search_with_secondary_emails-for-pr

# Commit to git

git add git commit -m "better docs for User.search_with_secondary_emails"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-User-search_with_secondary_emails-for-pr

hub pull-request

# Celebrate!