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https://github.com/nettofarah/graphql-query-resolver
Minimize N+1 queries generated by GraphQL and ActiveRecord
https://github.com/nettofarah/graphql-query-resolver
activerecord graphql graphql-ruby rails
Last synced: 9 days ago
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Minimize N+1 queries generated by GraphQL and ActiveRecord
- Host: GitHub
- URL: https://github.com/nettofarah/graphql-query-resolver
- Owner: nettofarah
- License: mit
- Created: 2017-03-13T23:23:24.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2018-04-26T06:04:20.000Z (over 6 years ago)
- Last Synced: 2024-10-23T04:52:19.807Z (18 days ago)
- Topics: activerecord, graphql, graphql-ruby, rails
- Language: Ruby
- Homepage:
- Size: 27.3 KB
- Stars: 146
- Watchers: 7
- Forks: 12
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.txt
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
README
# GraphQL::QueryResolver
[](https://travis-ci.org/nettofarah/graphql-query-resolver)
GraphQL::QueryResolver is an add-on to [graphql-ruby](https://github.com/rmosolgo/graphql-ruby)
that allows your field resolvers to minimize N+1 SELECTS issued by ActiveRecord.
GraphQL::QueryResolver will analyze the AST from incoming GraphQL queries and
try to match query selections to `ActiveRecord::Reflections` present in your
`ActiveRecord` models.
Every matched selection will be then passed on to
`ActiveRecord::Associations::Preloader.new` so your queries now only issue
one `SELECT` statement for every level of the GraphQL AST.
## Installation
Add this line to your application's Gemfile:
```ruby
gem 'graphql-query-resolver'
```
And then execute:
```bash
$ bundle
```
Or install it yourself as:
```bash
$ gem install graphql-query-resolver
```
## Usage
```ruby
require 'graphql/query_resolver'
# In your field resolver
# Assuming `Project < ActiveRecord::Base` and a `ProjectType` GraphQL type:
#
field :projects do
type types[ProjectType]
resolve -> (obj, args, ctx) {
# Wrap your field resolve operation with `GraphQL::QueryResolver`
GraphQL::QueryResolver.run(Project, ctx, ProjectType) do
Project.all
end
}
end
# QueryResolver works the same way for single objects
field :comment do
type CommentType
argument :id, !types.ID
resolve -> (obj, args, ctx) {
GraphQL::QueryResolver.run(Comment, ctx, CommentType) do
Comment.find(args['id'])
end
}
end
```
## Development
After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` 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`.
## Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/nettofarah/graphql-query-resolver. 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.
To run the specs across all supported versions of ActiveRecord, check out the repo and follow these steps:
```bash
$ bundle install
$ bundle exec appraisal install
$ bundle exec appraisal rake
```
## License
The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).