RailsOr

rails_or is a Ruby Gem for you to write cleaner OR query.

Supports Rails 3.2, 4.2, 5.0, 5.1, 5.2, 6.0.

It will use built-in or method, which was added in Rails 5, when possible, so that you don't need to worry about that it will polulate active_model. Otherwise, it implements or method for Rails 3 and Rails 4.

Installation

Add this line to your application's Gemfile:

gem 'rails_or'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rails_or

Usage

Same as Rails 5's #or method

Person.where(name: 'Pearl').or(Person.where(age: 24))

# is the same as
Person.where("name = ? OR age = ?", 'Pearl', 24)

Clearer Syntax

# Before
user = User.where(account: account).or(User.where(email: account)).take

# After
user = User.where(account: account).or(email: account).take

# Before
class Post < ActiveRecord::Base
  scope :not_expired, ->{ where(end_time: nil).or(Post.where('end_time > ?', Time.now)) }
end

# After
class Post < ActiveRecord::Base
  scope :not_expired, ->{ where(end_time: nil).or('end_time > ?', Time.now) }
end

No need to repeat writing Model.joins(XXX).where(...)

# Before
User.joins(:posts).where(id: 2)
                  .or(User.joins(:posts).where('posts.title = ?',"title"))
                  .or(User.joins(:posts).where('posts.created_at > ?', 1.day.ago))
# After
User.joins(:posts).where(id: 2)
                  .or('posts.title': "title")
                  .or('posts.created_at > ?', 1.day.ago)

Support passing Hash / Array / String as parameters

Person.where(name: 'Pearl').or(age: 24)
Person.where(name: 'Pearl').or(['age = ?', 24])
Person.where(name: 'Pearl').or('age = ?', 24)
Person.where(name: 'Pearl').or('age = 24')

Other convenient methods

or_not

(Only supports in Rails 4+)

Company.where.not(logo_image1: nil)
       .or_not(logo_image2: nil)
       .or_not(logo_image3: nil)
       .or_not(logo_image4: nil)

or_having

Order.group('user_id')
     .having('SUM(price) > 1000')
     .or_having('COUNT(*) > 10')

Examples

Let A = {id: 1}, B = {account: 'a'}, and C = {email: 'b'}

A && (B || C)

u = User.where(A)
u.where(B).or(u.where(C))
# =>
# SELECT `users`.* FROM `users`
# WHERE `users`.`id` = 1 AND (`users`.`account` = 'a' OR `users`.`email` = 'b')

(B || C) && A

User.where(B).or(C).where(A)
# =>
# SELECT `users`.* FROM `users`
# WHERE (`users`.`account` = 'a' OR `users`.`email` = 'b') AND `users`.`id` = 1

A && B || A && C

User.where(A).where(B).or(User.where(A).where(C))
# =>
# SELECT `users`.* FROM `users`
# WHERE (`users`.`id` = 1 AND `users`.`account` = 'a' OR `users`.`id` = 1 AND `users`.`email` = 'b')

A && B || C

User.where(A).where(B).or(C)
# =>
# SELECT `users`.* FROM `users`
# WHERE (`users`.`id` = 1 AND `users`.`account` = 'a' OR `users`.`email` = 'b')

Development

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 rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/khiav223577/rails_or. 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.

License

The gem is available as open source under the terms of the MIT License.