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Overview

For instructions on upgrading to newer versions, visit mongoid.org.

2.2.0

New Features

  • Mongoid now contains eager loading in the form of Criteria#includes(*args). This works on has_one, has_many, belongs_to associations and requires the identity map to be enabled in order to function. Set identity_map_enabled: true in your mongoid.yml. Ex: Person.where(title: "Sir").includes(:posts, :game)

  • Relations can now take a module as a value to the :extend option. (Roman Shterenzon)

  • Capped collections can be created by passing the options to the #store_in macro: Person.store_in :people, capped: true, max: 1000000

  • Mongoid::Collection now supports collection.find_and_modify

  • Document#has_attribute? now aliases to Document#attribute_present?

  • #930 You can now turn off the Mongoid logger via the mongoid.yml by doing logger: false

  • #909 We now raise a Mongoid::Errors::Callback exception if persisting with a bang method and a callback returns false, instead of the uninformative validations error from before.

Major Changes

  • #1173 has_many relations no longer delete all documents on a set of the relation (= [ doc_one, doc_two ]) but look to the dependent option to determine what behaviour should occur. :delete and :destroy will behave as before, :nullify and no option specified will both nullify the old documents without deleting.

  • #1142, #767 Embedded relations no longer immediately persist atomically when accessed via a parent attributes set. This includes nested attributes setting and attributes= or write_attributes. The child changes then remain dirty and atomically update when save is called on them or the parent document.

Resolved Issues

  • #1190 Fixed the gemspec errors due to changing README and CHANGELOG to markdown.

  • #1180, #1084, #955 Mongoid now checks the field types rather than if the name contains /id/ when trying to convert to object ids on criteria.

  • #1176 Enumerable targets should always return the in memory documents first, when calling #first

  • #1175 Make sure both sides of many to many relations are in sync during a create.

  • #1172 Referenced enumerable relations now properly handle #to_json (Daniel Doubrovkine)

  • #1040 Increased performance of class load times by removing all delegate calls to self.class.

2.1.9

Resolved Issues

  • #1159 Fixed build blocks not to cancel out each other when nested.

  • #1154 Don't delete many-to-many documents on empty array set.

  • #1153 Retain parent document reference in after callbacks.

  • #1151 Fix associated validation infinite loop on self referencing documents.

  • #1150 Validates associated on belongs_to is false by default.

  • #1149 Fixed metadata setting on belongs_to relations.

  • #1145 Metadata inverse should return nil if inverse_of was set as nil.

  • #1139 Enumerable targets now quack like arrays.

  • #1136 Setting belongs_to parent to nil no longer deletes the parent.

  • #1120 Don't call in_memory on relations if they don't respond to it.

  • #1075 Set self in default procs to the document instance.

  • #1072 Writing attributes for nested documents can take a hash or array of hashes.

  • #990 Embedded documents can use a single embedded_in with multiple parent definitions.

2.1.8

Resolved Issues

  • #1148 Fixed respond_to? on all relations to return properly.

  • #1146 Added back the Mongoid destructive fields check when defining fields.

  • #1141 Fixed conversions of nil values in criteria.

  • #1131 Verified Mongoid/Kaminari paginating correctly.

  • #1105 Fixed atomic update consumer to be scoped to class.

  • #1075 self in default lambdas and procs now references the document instance.

  • #740 Removed embedded_object_id configuration parameter.

  • #661 Fixed metadata caching on embedded documents.

  • #595 Fixed relation reload flagging.

  • #410 Moving documents from one relation to another now works as expected.

2.1.7

This was a specific release to fix MRI 1.8.7 breakages introduced by 2.1.6.

2.1.6

Resolved Issues

  • #1126 Fix setting of relations with other relation proxies.

  • #1122 Hash and array fields now properly flag as dirty on access and change.

  • #656 Fixed reload breaking relations on unsetting of already loaded associations.

  • #647 Prefer #unset to #remove_attribute for removing values.

  • #290 Verify pushes into deeply embedded documents.

2.1.5

Resolved Issues

  • #1116 Embedded children retain reference to parent in destroy callbacks.

  • #1110, #1115 Don't memoize metadata related helpers on documents.

  • #1112 db:create_indexes no longer indexes subclasses multiple times.

  • #1111, #1098 Don't set _id in $set operations.

  • #1007 Update attribute properly tracks array changes.

2.1.4

This was a specific release to get a Psych generated gemspec so no more parse errors would occur on those rubies that were using the new YAML parser.

2.1.3

Resolved Issues

  • #1109 Fixed validations not loading one to ones into memory.

  • #1107 Mongoid no longer wants required mongoid/railtie in application.rb.

  • #1102 Fixed nested attributes deletion.

  • #1097 Reload now runs after_initialize callbacks.

  • #1079 Embeds many no longer duplicates documents.

  • #1078 Fixed array criteria matching on embedded documents.

  • #1028 Implement scoped on one-to-many and many-to-many relations.

  • #988 Many-to-many clear no longer deletes the child documents.

  • #977 Autosaving relations works also through nested attributes.

  • #972 Recursive embedding now handles namespacing on generated names.

  • #943 Don't override Document#attributes.

  • #893 Verify count is not caching on many to many relations.

  • #815 Verify after_initialize is run in the correct place.

  • #793 Verify any_of scopes chain properly with any other scope.

  • #776 Fixed mongoid case quality when dealing with subclasses.

  • #747 Fixed complex criteria using its keys to render its string value.

  • #721 #safely now properly raises validation errors when they occur.

2.1.2

Resolved Issues

  • #1082 Alias size and length to count on criteria. (Adam Greene)

  • #1044 When multiple relations are defined for the same class, always return the default inverse first if inverse_of is not defined.

  • #710 Nested attributes accept both id and _id in hashes or arrays.

  • #1047 Ignore nil values passed to embeds_man pushes and substitution. (Derick Bailey)

2.1.1

Resolved Issues

  • #1021, #719 Many to many relations dont trigger extra database queries when pushing new documents.

  • #607 Calling create on large associations does not load the entire relation.

  • #1064 Mongoid::Paranoia should respect unscoped and scoped.

  • #1026 model#update_attribute now can update booleans to false.

  • #618 Crack XML library breaks Mongoid by adding #attributes method to the String class. (Stephen McGinty)

2.1.0

Major Changes

  • Mongoid now requires MongoDB 1.8.x in order to properly support the #bit and #rename atomic operations.

  • Traditional slave support has been removed from Mongoid. Replica sets should be used in place of traditional master and slave setups.

  • Custom field serialization has changed. Please see serializable for changes.

  • The dirty attribute tracking has been switched to use ActiveModel, this brings many bug fixes and changes:

    • #756 After callbacks and observers see what was changed instead of changes just made being in previous_changes

    • #434 Documents now are flagged as dirty when brand new or the state on instantiation differs from the database state. This is consistent with ActiveRecord.

    • #323 Mongoid now supports [field]_will_change! from ActiveModel::Dirty

  • Mongoid model preloading in development mode now defaults to false.

  • :autosave => true on relational associations now saves on update as well as create.

  • Mongoid now has an identity map for simple find_by_id queries. See the website for documentation.

New Features

  • #1067 Fields now accept a :versioned attribute to be able to disable what fields are versioned with Mongoid::Versioning. (Jim Benton)

  • #587 Added order preference to many and many to many associations. (Gregory Man)

  • Added ability to chain order_by statements. (Gregory Man)

  • #961 Allow arbitrary Mongo::Connection options to pass through Mongoid::Config::Database object. (Morgan Nelson)

  • Enable autosave for many to many references. (Dave Krupinski)

  • The following explicit atomic operations have been added: Model#bit, Model#pop, Model#pull, Model#push_all, Model#rename, Model#unset.

  • Added exception translations for Hindi. (Sukeerthi Adiga)

Resolved Issues

  • #974 Fix attribute_present? to work correctly then attribute value is false, thanks to @nickhoffman. (Gregory Man)

  • #960 create indexes rake task is not recognizing a lot of mongoid models because it has problems guessing their model names from filenames. (Tobias Schlottke)

  • #874 Deleting from a M-M reference is one-sided. (nickhoffman, davekrupinski)

  • Replace deprecated class_inheritable_hash dropped in Rails 3.1+. (Konstantin Shabanov)

  • Fix inconsistent state when replacing an entire many to many relation.

  • Don't clobber inheritable attributes when adding subclass field inheritance. (Dave Krupinski)

  • #914 Querying embedded documents with $or selector. (Max Golovnia)

  • #514 Fix marshaling of documents with relation extensions. (Chris Griego)

  • Metadata#extension now returns a Module, instead of a Proc, when an extension is defined.

  • #837 When allow_dynamic_fields is set to false and loading an embedded document with an unrecognized field, an exception is raised.

  • #963 Initializing array of embedded documents via hash regressed (Chris Griego, Morgan Nelson)

  • Mongoid::Config.reset resets the options to their default values.

  • Mongoid::Fields.defaults is memoized for faster instantiation of models.