Rails 5.2.0.rc2 (March 20, 2018)

Allow full use of the AWS S3 SDK options for authentication. If an explicit AWS key pair and/or region is not provided in storage.yml, attempt to use environment variables, shared credentials, or IAM (instance or task) role credentials. Order of precedence is determined by the AWS SDK.

Brian Knight
Remove path config option from Azure service.

The Active Storage service for Azure Storage has an option called path that is ambiguous in meaning. It needs to be set to the primary blob storage endpoint but that can be determined from the blobs client anyway.

To simplify the configuration, we've removed the path option and now get the endpoint from the blobs client instead.

Closes #32225.

Andrew White
Generate root-relative paths in disk service URL methods.

Obviate the disk service's :host configuration option.

George Claghorn
Add source code to published npm package.

This allows activestorage users to depend on the javascript source code rather than the compiled code, which can produce smaller javascript bundles.

Richard Macklin

Rails 5.2.0.rc1 (January 30, 2018)

Preserve display aspect ratio when extracting width and height from videos with rectangular samples in ActiveStorage::Analyzer::VideoAnalyzer.

When a video contains a display aspect ratio, emit it in metadata as :display_aspect_ratio rather than the ambiguous :aspect_ratio. Compute its height by scaling its encoded frame width according to the DAR.

George Claghorn
Use after_destroy_commit instead of before_destroy for purging attachments when a record is destroyed.

Hiroki Zenigami
Force :attachment disposition for specific, configurable content types. This mitigates possible security issues such as XSS or phishing when serving them inline. A list of such content types is included by default, and can be configured via content_types_to_serve_as_binary.

Rosa Gutierrez