Redirect all SELECT queries to a separate connection within a block

This gem adds custom block expectation matchers for RSpec, such as `expect { ... }.to create_a_new(User)`

ActiveRecord::Commentator adds execute location (filename, line-number and method-name) as SQL comment that invokes SQL statement.

cursor pagination for ActiveRecord

This gem automatically logs SQL EXPLAIN of every queries. You can check naturally every SQL EXPLAIN from development log, without manually executions.

In ActiveRecord, allows you to query the association of the records that your current query would return. If you need the comments of some posts: `Post.where(...).follow_assoc(:comments)`. You can then chain `where` on the comments.

Efficient Rails group count if you need the summed up count instead of the hash. Can be used with Kaminari to speed up total_pages and total_count.

Include ActiveRecord::Immutable in your ActiveRecord models to make your tables append-only.

Implements the Null Object Pattern for nil values in ActiveRecord associations.

Allows polymorphic loading of has_many through objects

A simple ActiveRecord extension to support where with comparison operators (`>`, `>=`, `<`, and `<=`).

Get raw data from ActiveRecord

Database sharding library for ActiveRecord

Shorten index name

This gem changes ActiveRecord's query logs to be compatible with the sqlcommenter format.

A data structure for adding survey capabilities using activerecord

ActiveRecord Tablefree Models provides a simple mixin for creating models that are not bound to the database. This approach is useful for taking advantage of the features of ActiveRecord such as validation, relationships, nested_attributes, etc.

Define attributes in arel

Performs a Sanity Check of your database by logging all invalid Active Records

Adds customer-supplied encryption keys to storage services.