# Doorkeeper Guides

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Doorkeeper is an oAuth2 provider built in Ruby. It integrates with Ruby on Rails and Grape frameworks.

## Installation

The installation process depends on the framework you're using. The first step is to add `doorkeeper` to your `Gemfile`:

```ruby
gem 'doorkeeper'
```

And run `bundle install`. After this, make sure to follow the guide related to the framework you're using below.

### Ruby on Rails

Doorkeeper follows Rails maintenance policy and supports only supported versions of the framework. Currently we support Ruby on Rails 5 and higher. See the guide [here](https://doorkeeper.gitbook.io/guides/ruby-on-rails/getting-started).

### Grape

Guide for integration with Grape framework can be found [here](https://doorkeeper.gitbook.io/guides/grape/grape).

### ORMs

Doorkeeper supports `ActiveRecord` by default, but can be configured to work with the following ORMs:

| ORM           | Support via                                                                               |
| ------------- | ----------------------------------------------------------------------------------------- |
| Active Record | by default                                                                                |
| MongoDB       | [doorkeeper-gem/doorkeeper-mongodb](https://github.com/doorkeeper-gem/doorkeeper-mongodb) |
| Sequel        | [nbulaj/doorkeeper-sequel](https://github.com/nbulaj/doorkeeper-sequel)                   |
| Couchbase     | [acaprojects/doorkeeper-couchbase](https://github.com/acaprojects/doorkeeper-couchbase)   |

### Extensions

Extensions that are not included by default and can be installed separately.

|                           | Link                                                                                                         |
| ------------------------- | ------------------------------------------------------------------------------------------------------------ |
| OpenID Connect extension  | [doorkeeper-gem/doorkeeper-openid\_connect](https://github.com/doorkeeper-gem/doorkeeper-openid_connect)     |
| JWT Token support         | [doorkeeper-gem/doorkeeper-jwt](https://github.com/doorkeeper-gem/doorkeeper-jwt)                            |
| Assertion grant extension | [doorkeeper-gem/doorkeeper-grants\_assertion](https://github.com/doorkeeper-gem/doorkeeper-grants_assertion) |
| I18n translations         | [doorkeeper-gem/doorkeeper-i18n](https://github.com/doorkeeper-gem/doorkeeper-i18n)                          |

### Example Applications

These applications show how Doorkeeper works and how to integrate with it. Start with the oAuth2 server and use the clients to connect with the server.

| Application                              | Link                                                                                                    |
| ---------------------------------------- | ------------------------------------------------------------------------------------------------------- |
| oAuth2 Server with Doorkeeper            | [doorkeeper-gem/doorkeeper-provider-app](https://github.com/doorkeeper-gem/doorkeeper-provider-app)     |
| Sinatra Client connected to Provider App | [doorkeeper-gem/doorkeeper-sinatra-client](https://github.com/doorkeeper-gem/doorkeeper-sinatra-client) |
| Devise + Omniauth Client                 | [doorkeeper-gem/doorkeeper-devise-client](https://github.com/doorkeeper-gem/doorkeeper-devise-client)   |

### Tutorials

See [list of tutorials](https://github.com/doorkeeper-gem/doorkeeper/wiki#how-tos--tutorials) in order to learn how to use the gem or integrate it with other solutions / gems.