You can use for STI, polymorphic and custom preload

PreloadQuery allows you preload queries and have them available as would a relations and `preload` of ActiveRecord.

See where each database call is coming from in your code, and get query profiling to see which queries are taking up the most time in the database.

Use the propertybase_id as the primary key in all your rails models

The DSL provides a nice and clean way to write ActiveRecord queries better than model scopes.

Display an overview of the quantity of queries being made and their origins in a block of code in Rails applications.

Rack middleware managing ActiveRecord connections in standalone (non-Rails) applications

Add hook on activerecord records loaded

Quickly make a cache column in ActiveRecord, non painful

Adding clean and powerful query syntax on AR using refinements

you can `AwesomeModel.all.exec2hash => [{id: 1, key: value}, ...]`

Annotate ActiveRecord relations objects with custom data, allowing metadata on relations that can be used to customize code

ActiveRecord::Resource implements a method for treating Models as Resources by creating Create, Update and Delete hooks in all models

Retry your Active Record transactions.

Expose REST routes for ActiveRecordModels.

Safely initialize an ActiveRecord attribute with respect to missing columns

Sample a instance from ActiveRecord directory.

Rails gem to sanitize attributes in write & read methods.

Merge scoping to associations

a lightweight search-engine using ActiveRecord