v.5.2.4

• [#1360] Backport: Increase matching_token_for batch lookup size to 10 000 and make it configurable.

v5.3.0

• [#1339] Validate Resource Owner in PasswordAccessTokenRequest against nil and false values.

• [#1341] Fix refresh_token_revoked_on_use with hash_token_secrets enabled.

• [#1343] Fix ruby 2.7 kwargs warning in InvalidTokenResponse.

• [#1345] Allow to set custom classes for Doorkeeper models, extract reusable AR mixins.

• [#1346] Refactor Doorkeeper::Application#to_json into convenient #as_json (fix #1344).

• [#1349] Fix Doorkeeper::Application AR associations using an incorrect foreign key name when using a custom class.

• [#1318] Make existing token revocation for client credentials optional and disable it by default.

  [IMPORTANT] This is a change compared to the behaviour of version 5.2. If you were relying on access tokens being revoked once the same client requested a new access token, reenable it with revoke_previous_client_credentials_token in Doorkeeper initialization file.

v5.2.3

• [#1334] Remove application_secret flash helper and redirect_to keyword.
• [#1331] Move redirect_uri_validator to where it is used (Application model).
• [#1326] Move response_type check in pre_authorization to a method to be easily to override.
• [#1329] Fix find_in_batches order warning.

v5.2.2

• [#1320] Call configured authenticate_resource_owner method once per request.
• [#1315] Allow generation of new secret with Doorkeeper::Application#renew_secret.
• [#1309] Allow Doorkeeper::Application#to_json to work without arguments.

v5.2.1

• [#1308] Fix flash types for api_only mode (no flashes for ActionController::API).
• [#1306] Fix interpolation of missing_param i18n.

v5.2.0

• [#1305] Make Doorkeeper::ApplicationController to inherit from ActionController::API in cases when api_mode enabled (fixes #1302).

v5.2.0.rc3

• [#1298] Slice strong params so doesn't error with Rails forms.
• [#1300] Limiting access to attributes of pre_authorization.
• [#1296] Adding client_id to strong parameters.
• [#1293] Move ar specific redirect uri validator to ar orm directory.
• [#1288] Allow to pass attributes to the Doorkeeper::OAuth::PreAuthorization#as_json method to customize
  the PreAuthorization response.
• [#1286] Add ability to customize grant flows per application (OAuth client) (#1245 , #1207)
• [#1283] Allow to customize base class for Doorkeeper::ApplicationMetalController (new configuration
  option called base_metal_controller (fix #1273).
• [#1277] Prevent requested scope be empty on authorization request, handle and add description for invalid request.

v5.2.0.rc2

• [#1270] Find matching tokens in batches for reuse_access_token option (fix #1193).
• [#1271] Reintroduce existing token revocation for client credentials.
• [#1269] Update initializer template documentation.
• [#1266] Use strong parameters within pre-authorization.
• [#1264] Add :before_successful_authorization and :after_successful_authorization hooks in TokensController
• [#1263] Response properly when introspection fails and fix configurations's user guide.

v5.2.0.rc1

• [#1260], [#1262] Improve Token Introspection configuration option (access to tokens, client).
• [#1257] Add constraint configuration when using client authentication on introspection endpoint.
• [#1252] Returning unauthorized when the revocation of the token should not be performed due to wrong permissions.
• [#1249] Specify case sensitive uniqueness to remove Rails 6 deprecation message
• [#1248] Display the Application Secret in HTML after creating a new application even when hash_application_secrets is used.
• [#1248] Return the unhashed Application Secret in the JSON response after creating new application even when hash_application_secrets is used.
• [#1238] Better support for native app with support for custom scheme and localhost redirection.

v5.1.0

See Upgrade guides for migration to a new version.

• [#1243]: Add nil check operator in token checking at token introspection.
• [#1241] Explaining foreign key options for resource owner in a single place
• [#1237] Allow to set blank redirect URI if Doorkeeper configured to use redirect URI-less grant flows.
• [#1234] Fix StaleRecordsCleaner to properly work with big amount of records.
• [#1228] Allow to explicitly set non-expiring tokens in custom_access_token_expires_in configuration
  option using Float::INIFINITY return value.
• [#1224] Do not try to store token if not found by fallback hashing strategy.
• [#1223] Update Hound/Rubocop rules, correct Doorkeeper codebase to follow style-guides.
• [#1220] Drop Rails 4.2 & Ruby < 2.4 support.