activestorage

Attach cloud and local files in Rails applications.

$gem install activestorage

Official docs outline

Extra Credit builds an outline of activestorage's docs the first time your work uses it. Until then, start at the official documentation.

thread_safe A collection of data structures and utilities to make thread-safe programming in Ruby easier
websocket-extensions Generic extension manager for WebSocket connections
rubocop-ast RuboCop's Node and NodePattern classes.
sprockets-rails Sprockets Rails integration
netrc This library can read and update netrc files, preserving formatting including comments and whitespace.
dotenv Loads environment variables from `.env`.
base64 Support for encoding and decoding binary data using a Base64 representation.
httpclient gives something like the functionality of libwww-perl (LWP) in Ruby
unf_ext Unicode Normalization Form support library for CRuby
bigdecimal This library provides arbitrary-precision decimal floating-point number class.
msgpack MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like
rack-protection Protect against typical web attacks, works with all Rack apps, including Rails