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Pluck multiple columns/attributes in Rails 3, 4, 5, and can return data as hash instead of only array.

This Gem standing on the shoulders of this article. And modify it to support not only Rail 3.

If you have a Rails 3 project, and want to pluck not only one column, feel free to use this gem and no need to worry about upgrading to Rails 4, 5 in the future will break this.


Add this line to your application's Gemfile:

gem 'pluck_all'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pluck_all


pluck to array

Behaves the same as the Rails 4 pluck, but you can use it in Rails 3

User.where('id < 3').pluck_array(:id, :account)
# => [[1, 'account1'], [2, 'account2']]

pluck to hash

Similar to pluck_array, but return hash instead.

User.where('id < 3').pluck_all(:id, :account)
# => [{"id"=>1, "account"=>"account1"}, {"id"=>2, "account"=>"account2"}] 

User.where('id < 3').pluck_all('id, account AS name')
# => [{"id"=>1, "name"=>"account1"}, {"id"=>2, "name"=>"account2"}] 


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 tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at 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.