README.md
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# LeftJoins
Backport `left_joins` from Rails 5 for Rails 3 and 4.
## Supports
- Ruby 2.2 ~ 2.7
- Rails 3.2, 4.2, 5.0, 5.1, 5.2, 6.0
## Installation
Add this line to your application's Gemfile:
```ruby
gem 'left_joins'
```
And then execute:
$ bundle
Or install it yourself as:
$ gem install left_joins
## Usage
Same as what you can do in Rails 5:
```rb
User.left_joins(:posts)
=> SELECT "users".* FROM "users" LEFT OUTER JOIN "posts" ON "posts"."user_id" = "users"."id"
```
## 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](https://rubygems.org).
## Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/khiav223577/left_joins. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
## License
The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).