ActiveRecord Object Instrumenter: Instrument the creation of ActiveRecord objects

ar_pg_array includes support of PostgreSQL's int[], float[], text[], timestamptz[] etc. into ActiveRecord. You could define migrations for array columns, query on array columns.

These RSpec matchers allow guarding against N+1 queries by specifying exactly how many queries you expect each of your ActiveRecord models to perform.

Associate multiple models together and make them behave as one.

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Measure and benchmark execution time of your ruby methods. Forgot about `Time.now - t` solution. Use `benchmark` to see how much time it take sto execute your method.

BindLogAnalyzer analyzes a Bind query log file and stores its data into a SQL database using ActiveRecord. It provides a fancy web interface to show some query stats and graphs.

Automatically userstamps create and update operations if the table has created_by and/or updated_by columns

Cabalist is conceived as a simple way of adding some smarts (machine learning capabilities) to your Ruby on Rails models without having to dig deep into mind-boggling AI algorithms. Using it is meant to be as straightforward as adding a few lines to your existing code and running a Rails generator or two.

Speed up ActiveRecord counting with caching

Various GraphQL caching / instrumentation tools

CanBe allows you to track the type of your ActiveRecord model in a consistent simple manner. With just a little configuration on your part, each type of record can contain different attributes that are specifc to that type of record.

Rails plugin to allow users to flag content for review

Find unnecessary selected database columns.

Context based validations for ActiveRecord models

In Service Asynchronous Job Scheduler for Rails. This gem handles ActiveRecord model as schedule definition.

csvpack - work with tabular data packages using comma-separated values (CSV) datafiles in text with datapackage.json; download, read into and query comma-separated values (CSV) datafiles with your SQL database (e.g. SQLite, PostgreSQL, ...) of choice and much more

Allows you to work with the date and time parts of DateTime attributes separately. Plays with time zones and ActiveModel as well.

Different relational databases treat text search very differently. DbTextSearch provides a unified interface on top of ActiveRecord for SQLite, MySQL, and PostgreSQL to do case-insensitive string-in-set querying and CI index creation, and basic full-text search for a list of terms, and FTS index creation.

Detectify provides a simple way to retrieve an ActiveRecord entity based on the domain/subdomain request information.