Use your database to store previous responses and guarantee safe retries.

Restrict ActiveRecord fields to one assignment only.

OneSignal API wrapper simplifying user targeted cross platform notifications.

Simple authentication endpoint for the Opener Web Services.

Database storing for the web services output when using callbacks.

Component for calculating scores of KAF documents

Same as acts_as_state_machine but on multiple columns and with more strict validation, allow creation of complex events with parameters, used successfully on critical financial applications for quite a long time

OpenID ActiveRecord Store.

Retries database transaction on deadlock and transaction serialization errors. Supports MySQL, PostgreSQL and SQLite (as long as you are using new drivers mysql2, pg, sqlite3).

A full ruby implementation of the OpenVAS OMP (version 2.0) protocol.

Perform addition, subtraction, multiplication and division on your models.

Create service objects with Operate.

A ruby widget toolkit for everyone and every computer

Generates memory-optimal immutable ActiveRecord dupes that are easily serializable and behaves much like ARs. Define required attributes before-hand and use them just as you would on an AR, for better memory optimization. Ideally, suitable in place of caching AR objects with cache stores like Memcached, where serialization and de-serialization are memory-hungry. Optars can save upto 90% of your memory(object allocations), while being upto 20x faster, when fetching huge AR results.

Micro gem to validate updatability enforcing optimistic locking using +lock_version+

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Graph engine interface for active record.

Oracle "enhanced" ActiveRecord adapter contains useful additional methods for working with new and legacy Oracle databases. This adapter is superset of original ActiveRecord Oracle adapter.

This is a Ruby library for interfacing with an Oracle Database using pooled OCI8 raw connections (http://ruby-oci8.rubyforge.org/en/). Connection pooling is achieved by utilizing ActiveRecord Oracle Enhanced adapter (https://github.com/rsim/oracle-enhanced).