7.2.0.rc1

This is a preview of the next feature release of Mongoid.

Mongoid 7.2 includes the following principal changes:

• Embedded matchers have been largely rewritten. In several cases the behavior of Mongoid matchers was changed to match MongoDB server. Please see the upgrading guide section for detailed changes.
• Model#count is now implemented using the aggregation pipeline $count stage. Model#estimated_count method was added to provide the estimated count that Model#count used to provide. This change should be transparent to most applications but may increase runtime for applications that call #count, especially with complex conditions (with the benefit being of #count producing accurate results). See this upgrading guide section for further details.
• Discriminator key and value can now be overridden for models using inheritance.
• Shard key is now used when reloading models for improved performance in sharded deployments.
• The query cache was moved to the driver. Mongoid 7.2 will transparently use the query cache implementation in driver versions 2.14 and higher, with a fallback on the legacy query cache implementation that will continue to be provided for when Mongoid is used with older driver versions. The driver's query cache implementation provides new features such as caching the aggregation pipelines and more fine grained cache expiration. Both the driver's query cache implementation and Mongoid's legacy query cache implementation also contain fixes to known issues like inability to cache results when they are returned in multiple batches from the server.

The following additional improvements were made:

• MONGOID-4914 Unmask Enumerable#find on one to many associations
• MONGOID-4948 Add Mongoid to driver's wrapping libraries
• MONGOID-4522 Make #any? not retrieve entire result set, like #exists?
• MONGOID-4703 Add geo_spatial as an alias for geo_spacial

The following bugs have been fixed:

• MONGOID-4977 Use new send_initial_query signature in Mongoid QueryCache
• MONGOID-4890 Destroying model instances with dependent associations in transactions raises OperationFailure due to use of (deprecated) count
• MONGOID-4947 #any? method with block given does not behave as per Enumerable
• MONGOID-4980 Atomic push incorrectly determines whether there is a conflict

Support for Ruby MRI versions 2.3 and 2.4 has been deprecated as of this release. See this ticket for more details. We intend to stop supporting these Ruby versions as of Mongoid 7.3.

Please read the upgrading guide for the detailed list of changes, major new features and upgrading guidance.

7.1.4

This patch release in the Mongoid 7.1 series adds the following improvements:

• MONGOID-4988 BSON symbol type is deprecated should warn only once

The following bugs have also been fixed:

• MONGOID-4944 Ensure that cached queries with limits return the correct number of results
• MONGOID-4978 Do not raise an error when performing multi-batch queries with query cache enabled
• MONGOID-4853 Querying Date fields using a TimeWithZone instance queries by the date in local time zone
• MONGOID-4873 Do not break Regexp::Raw when Mongoid is loaded
• MONGOID-4952 Access embedded fields in projected query results

This patch replaces the 7.1.3 release, which was unsigned.

7.0.10

This patch release in the Mongoid 7.0 series fixes the following bugs:

• MONGOID-4944 Ensure that cached queries with limits return the correct number of results
• MONGOID-4978 Do not raise an error when performing multi-batch queries with query cache enabled
• MONGOID-4853 Querying Date fields using a TimeWithZone instance queries by the date in local time zone

This patch replaces the 7.0.9 release, which was unsigned.

6.4.7

This is a patch release in the Mongoid 6.4 series which introduces the following bug fixes in the query cache:

• MONGOID-4944 Ensure that cached queries with limits return the correct number of results
• MONGOID-4978 Do not raise an error when performing multi-batch queries with query cache enabled

This release replaces the 6.4.6 patch release, which was unsigned.

7.1.2

This patch release in the 7.1 series primarily addresses several query issues reported since the 7.1.1 release.

The following minor behavior change was made:

• MONGOID-4885 Use belongs_to instead of embedded_in in model generator

The following notable bugs were fixed:

• MONGOID-4880 Criteria for a field clobbered instead of combined when using symbol operators
• MONGOID-4882 Embedded documents not setting parent association if declared with a class_name having "::" prefix
• MONGOID-4884 not creates incorrect queries when symbol operators are given
• MONGOID-4887 Queryable Selector with .or and DateTime fails (NotImplementedError)
• MONGOID-4772 Model.client_name not usable due to private visibility unlike collection_name/database_name

7.0.8

This patch release in the 7.0 series makes the following minor change:

• MONGOID-4885 Use belongs_to instead of embedded_in in model generator

The following issues have been fixed:

• MONGOID-4882 Embedded documents not setting parent association if declared with a class_name having "::" prefix
• MONGOID-4772 Model.client_name not usable due to private visibility unlike collection_name/database_name

6.4.5

This patch release in the 6.4 series provides improved compatibility with Ruby 2.7/3.0 by eliminating some of the deprecation warnings produced by Ruby 2.7.

7.1.1

This patch release in the 7.1 series improves usability of and ease of migration to Mongoid 7.1.

Breaking change: Based on user feedback, the behavior of any_of was reverted to what it was in Mongoid 7.0, and also matches the behavior of or in Mongoid 7.0. or behaves the same in Mongoid 7.1.0 and 7.1.1. More details here.

Mongoid 7.1.1 also fixes the conflict with ActiveSupport delegation.

As of this release, Mongoid documentation includes a section listing major changes in 7.1 together with upgrading guidance. This should assist users looking to upgrade to Mongoid 7.1.

The following additional improvements were made:

• MONGOID-4841 Add eager loading for polymorphic belongs_to associations
• MONGOID-4804 Support argument-less where

The following notable bugs were additionally fixed:

• MONGOID-4870 $or condition is mishandled by Criteria#where
• MONGOID-4865 include_root_in_json setting retrieval does not respect hierarchy
• MONGOID-4874 Values seem to be lost when using add_to_set on a non-existent attribute on a loaded instance

7.0.7

This patch release in the 7.0 series fixes one issue:

• MONGOID-4874 Values seem to be lost when using add_to_set on a non-existent attribute on a loaded instance

7.1.0

Breaking change: the principal improvement in Mongoid 7.1 is the unified treatment of logical operations when building queries (i.e., operating on Criteria objects). This makes Mongoid's behavior match that of ActiveRecord, and results in consistent queries being constructed regardless of the mechanism used to construct them. Please carefully review the documentation here, specifically the section on operator combinations, and audit your application for uses of logical operations that changed behavior.

The following improvements have been made since 7.1.0.rc0:

• MONGOID-4826 Support hashed shard key declarations, add rake task to shard collections

The following changes have been made since 7.1.0.rc0:

• MONGOID-4830 Remove #one method from has_many associations (the #one method was added in 7.1.0.rc0, there should be no impact to applications using Mongoid 7.0 or previous versions)

The following bugs have been fixed:

• MONGOID-4832 Storing false values in fields of Array and Hash types fails but not in an expected way

As of version 7.1, Mongoid supports Ruby 2.3+ and JRuby 9.2. Support for Ruby 2.2 and JRuby 9.1 has been dropped.