omniauth-dropbox2 provides a Dropbox OAuth2 strategy for OmniAuth.

Add this line to your application's Gemfile:

gem 'omniauth-dropbox2'

Then run:

bundle install

Configure OmniAuth in your Rack/Rails app:

use OmniAuth::Builder do
  provider :dropbox, ENV.fetch('DROPBOX_APP_KEY'), ENV.fetch('DROPBOX_APP_SECRET')
end

• Dropbox app console: https://www.dropbox.com/developers/apps
• Register callback URL (example): https://your-app.example.com/auth/dropbox/callback

• Request-phase query options can be passed directly to /auth/dropbox when supported by Dropbox OAuth endpoints.

Example payload from request.env['omniauth.auth'] (real flow shape, anonymized):

{
  "uid": "dbid:sample-account-id",
  "info": {
    "name": "Sample User"
  },
  "credentials": {
    "token": "sample-access-token",
    "refresh_token": "sample-refresh-token",
    "expires": false,
    "scope": "files.metadata.read"
  },
  "extra": {
    "raw_info": {
      "account_id": "dbid:sample-account-id",
      "name": {
        "given_name": "Sample",
        "surname": "User",
        "familiar_name": "Sample",
        "display_name": "Sample User",
        "abbreviated_name": "SU"
      },
      "email": "sample@example.test",
      "email_verified": true,
      "disabled": false,
      "country": "IT",
      "locale": "en",
      "referral_link": "https://www.dropbox.com/referrals/AABsample",
      "is_paired": false,
      "account_type": {
        ".tag": "basic"
      },
      "root_info": {
        ".tag": "user",
        "root_namespace_id": "123456",
        "home_namespace_id": "123456"
      }
    }
  }
}

Notes:

• uid is mapped from raw_info.account_id
• info.name is mapped from raw_info.name.display_name
• credentials includes token, plus refresh_token when provided by Dropbox
• extra.raw_info is the full users/get_current_account response

bundle install
bundle exec rake

The default Rake task runs:

• rake lint (RuboCop)
• rake test_unit (strategy/unit Minitest suite)

Run Rails integration tests with an explicit Rails version:

RAILS_VERSION='~> 8.1.0' bundle install
RAILS_VERSION='~> 8.1.0' bundle exec rake test_rails_integration

• test/omniauth_dropbox2_test.rb: strategy/unit behavior
• test/rails_integration_test.rb: full Rack/Rails request+callback flow
• test/test_helper.rb: shared test bootstrap

• Ruby: >= 3.2 (tested on 3.2, 3.3, 3.4, 4.0)
• omniauth-oauth2: >= 1.8, < 2.0
• Rails integration lanes: ~> 7.1.0, ~> 7.2.0, ~> 8.0.0, ~> 8.1.0

Tag releases as vX.Y.Z; GitHub Actions publishes the gem to RubyGems.

MIT