Patch to ActiveRecord::Relation allowing for unioned scopes and ordered union scopes.
If you have a sharded DB, beware of use on cross-shard queries.
Add this line to your application's Gemfile:
gem 'ar_union'And then execute:
$ bundle
Or install it yourself as:
$ gem install ar_union
Used to create union SQL call scope that can chained
$ User.scope_on_user.union(
:other_scope_on_user, :one_more_scope_on_user
).where(foo: "bar").pluck(:foo)
use ordered_union to maintain order:
$ User.scope_on_user.ordered_union(
:other_scope_on_user, :one_more_scope_on_user
).where(foo: "bar").pluck(:foo)
- Fork it ( https://github.com/[my-github-username]/ar_union/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request