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Overview

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

3.0.0 (branch: master)

New Features

  • #1685 Belongs to relations now have build_ and create_ methods.

    class Comment
      include Mongoid::Document
      belongs_to :user
    end
    
    comment = Comment.new
    comment.build_user # Build a new user object
    comment.create_user # Create a new user object
    
  • #1684 Raise a Mongoid::Errors::InverseNotFound when attempting to set a child on a relation without the proper inverse_of definitions due to Mongoid not being able to determine it.

      class Lush
        include Mongoid::Document
        embeds_one :whiskey, class_name: "Drink"
      end
    
      class Drink
        include Mongoid::Document
        embedded_in :alcoholic, class_name: "Lush"
      end
    
      lush = Lush.new
      lush.whiskey = Drink.new # raises an InverseNotFound error.
    
  • #1680 Polymorphic relations now use *_type keys in lookup queries.

    class User
      include Mongoid::Document
      has_many :comments, as: :commentable
    end
    
    class Comment
      include Mongoid::Document
      belongs_to :commentable, polymorphic: true
    end
    
    user = User.find(id)
    user.comments # Uses user.id and type "User" in the query.
    
  • #1677 Support for parent separable polymorphic relations to the same parent class is now available. This only works if set from the parent side in order to know which relation the children belong to. (Douwe Maan)

      class Face
        include Mongoid::Document
        has_one :left_eye, class_name: "Eye", as: :visible
        has_one :right_eye, class_name: "Eye", as: :visible
      end
    
      class Eye
        include Mongoid::Document
        belongs_to :visible, polymorphic: true
      end
    
      face = Face.new
      right_eye = Eye.new
      left_eye = Eye.new
      face.right_eye = right_eye
      face.left_eye = left_eye
      right_eye.face = face # Will raise an error.
    
  • #1650 Objects that respond to #to_criteria can now be merged into existing criteria objects.

      class Filter
        def to_criteria
          # return a Criteria object.
        end
      end
    
      criteria = Person.where(title: "Sir")
      criteria.merge(filter)
    
  • #1635 All exceptions now provide more comprehensive errors, including the problem that occured, a detail summary of why it happened, and potential resolutions. Example:

      (Mongoid::Errors::DocumentNotFound)
      Problem:
        Document not found for class Town with
        id(s) [BSON::ObjectId('4f35781b8ad54812e1000001')].
      Summary:
        When calling Town.find with an id or array of ids,
        each parameter must match a document in the database
        or this error will be raised.
      Resolution:
        Search for an id that is in the database or set the
        Mongoid.raise_not_found_error configuration option to
        false, which will cause a nil to be returned instead
        of raising this error.
    
  • #1616 Model.find_by added which takes a hash of arugments to search for in the database. If no single document is returned a DocumentNotFound error is raised. (Piotr Jakubowski)

      Band.find_by(name: "Depeche Mode")
    
  • #1459 The identity map can be disabled now for specific code execution by passing options to the unit of work.

      Mongoid.unit_of_work(disable: :all) do
        # Disables the identity map on all threads for the block.
      end
    
      Mongoid.unit_of_work(disable: :current) do
        # Disables the identity map on the current thread for the block.
      end
    
      Mongoid.unit_of_work do
        # Business as usual.
      end
    
  • #1355 Associations now can have safety options provided to them on single document persistence operations.

      band.albums.safely.push(album)
      band.albums.safely.create(name: "Smiths")
    
      album.safely.create_producer(name: "Flood")
    
  • #1348 Eager loading is now supported on many-to-many relations.

  • #1212 Embedded documents can now be popped off a relation with persistence.

    band.albums.pop # Pop 1 document and persist the removal.
    band.albums.pop(3) # Pop 3 documents and persist the removal.
    
  • #1081 Mongoid indexes both id and type as a compound index when providing index: true to a polymorphic belongs_to.

      class Comment
        include Mongoid::Document
    
        # Indexes commentable_id and commentable_type as a compound index.
        belongs_to :commentable, polymorphic: true, index: true
      end
    
  • #1053 Raise a Mongoid::Errors::UnknownAttribute instead of no method when attempting to set a field that is not defined and allow dynamic fields is false. (Cyril Mougel)

      Mongoid.allow_dynamic_fields = false
    
      class Person
        include Mongoid::Document
        field :title, type: String
      end
    
      Person.new.age = 50 # raises the UnknownAttribute error.
    

Major Changes

  • Model.defaults no longer exists. You may get all defaults with a combination of Model.pre_processed_defaults and Model.post_processed_defaults

  • Model.identity and Model.key have been removed. For custom ids, users must now override the _id field.

    When the default value is a proc, the default is applied after all other attributes are set.

      class Band
        include Mongoid::Document
        field :_id, type: String, default: ->{ name }
      end
    

    To have the default applied before other attributes, set :pre_processed to true.

      class Band
        include Mongoid::Document
        field :_id,
          type: String,
          pre_processed: true,
          default: ->{ BSON::ObjectId.new.to_s }
      end
    
  • Custom application exceptions in various languages has been removed, along with the Mongoid.add_language feature.

  • Mongoid no longer supports 1.8 syntax. 1.9.x or other vms running in 1.9 mode is now only supported.

  • #1484 Model#has_attribute? now behaves the same as Active Record.

  • #1471 Mongoid no longer strips any level of precision off of times.

  • #1475 Active support's time zone is now used by default in time serialization if it is defined.

  • #1342 Model.find and model.relation.find now only take a single or multiple ids. The first/last/all with a conditions hash has been removed.

  • #1270 Relation macros have been changed to match their AR counterparts: only :has_one, :has_many, :has_and_belongs_to_many, and :belongs_to exist now.

  • #1268 Model#new? has been removed, developers must now always use Model#new_record?.

  • #933 :field.size has been renamed to :field.count in criteria for $size not to conflict with Symbol's size method.

Resolved Issues

  • #1692/#1376 Model#updateattributes and Model#update_attributes! now accept assignment options. (Hans Hasselberg)

  • #1688/#1207 Don't require namespacing when providing class name on relation macros inside the namespace. (Hans Hasselberg)

  • #1665/#1672 Expand complex criteria in nested criteria selectors, like #matches. (Hans Hasselberg)

  • #1335 Don't add id sorting criteria to first/last is there is already sorting options on the criteria.

  • #1135 DateTimes now properly get time zones on derserialization.

2.4.4 (branch: 2.4.0-stable)

Resolved Issues

  • #1703 Updated at is now versioned again. (Lucas Souza)

  • #1686 Set the base metadata on unbind as well as bind for belongs to relations.

  • #1681 Attempt to create indexes for models without namespacing if the namespace does not exist for the subdirectory.

  • #1676 Allow eager loading to work as a default scope.

  • #1665/#1672 Expand complex criteria in nested criteria selectors, like #matches. (Hans Hasselberg)

  • #1668 Ensure Mongoid logger exists before calling warn. (Rémy Coutable)

  • #1661 Ensure uniqueness validation works on cloned documents.

  • #1659 Clear delayed atomic sets when resetting the same embedded relation.

  • #1656/#1657 Don't hit database for uniqueness validation if BOTH scope and attribute hasn't changed. (priyaaank)

  • #1205/#1642 When limiting fields returned from the database via Criteria#only and Criteria#without and then subsequently saving the document. Default values no longer override excluded fields.

2.4.3

Resolved Issues

  • #1647 DateTime serialization when already in UTC does not convert to local time.

  • #1641/#1639 Mongoid.observer.disable :all now behaves as AR does.

  • #1640 Update consumers should be tied to the name of the collection they persist to, not the name of the class.

  • #1637/#1636 Scopes no longer modify parent class scopes when subclassing. (Hans Hasselberg)

  • #1629 $all and $in criteria on embedded many relations now properly handles regex searches and elements of varying length. (Douwe Maan)

  • #1623/#1634 Default scopes no longer break Mongoid::Versioning. (Hans Hasselberg)

  • #1605 Fix regression of rescue responses, Rails 3.2

2.4.2

Resolved Issues

  • #1628 _type field can once again be included in serialization to json or xml as a global option with include_type_for_serialization. (Roman Shterenzon)

  • #1627 Validating format now works properly with localized fields. (Douwe Maan)

  • #1617 Relation proxy methods now show up in Mongoid's list of prohibited fields.

  • #1615 Allow a single configuration of host and port for all spec runs, overridden by setting MONGOID_SPEC_HOST and MONGOID_SPEC_PORT env vars.

  • #1610 When versioning paranoid documents and max version is set, hard delete old versions from the embedded relation.

  • #1609 Allow connection retry during cursor iteration as well as all other operations.

  • #1608 Guard against no method errors when passing ids in nested attributes and the documents do not exist.

  • #1605 Remove deprecation warning on rescue responses, Rails 3.2

  • #1602 Preserve structure of $and and $or queries when typecasting.

  • #1600 Uniqueness validation no longer errors when provided a relation.

  • #1599 Make sure enumerable targets yield to what is in memory first when performing #each, not always the unloaded first.

  • #1597 Fix the ability to change the order of array fields with the same elements.

  • #1590 Allow proper serialization of boolean values in criteria where the field is nested inside an array.

2.4.1

Resolved Issues

  • #1593 Arrays on embedded documents now properly atomically update when modified from original version.

  • #1592 Don't swallow exceptions from index generation in the create_indexes rake task.

  • #1589 Allow assignment of empty array to HABTM when no documents are yet loaded into memory.

  • #1587 When a previous value for an array field was an explicit nil, it can now be reset atomically with new values.

  • #1585 Model#respond_to? returns true now for the setter when allowing dynamic fields.

  • #1582 Allow nil values to be set in arrays.

  • #1580 Allow arrays to be set to nil post save, and not just empty.

  • #1579 Don't call #to_a on individual set field elements in criterion.

  • #1576 Don't hit database on uniqueness validation if the field getting validated has not changed.

  • #1571 Aliased fields get all the dirty attribute methods and all getters and setters for both the original name and the alias. (Hans Hasselberg)

  • #1568 Fallback to development environment with warning when no env configured.

  • #1565 For fields and foreign keys with non-standard Ruby or database names, use define_method instead of class_eval for creating the accessors and dirty methods.

  • #1557 Internal strategy class no longer conflicts with models.

  • #1551 Parent documents now return true for Model#changed? if only child (embedded) documents have changed.

  • #1547 Resetting persisted children from a parent save when new waits until post callbacks, mirroring update functionality.

  • #1536 Eager loading now happens when calling first or last on a criteria if inclusions are specified.

2.4.0

New Features

  • Ranges can now be passed to #where criteria to create a $gte/$lte query under the covers. Person.where(dob: start_date...end_date)

  • Custom serializable fields can now override #selection to provide customized serialization for criteria queries.

  • #1544 Internals use Array.wrap instead of to_a now where possible.

  • #1511 Presence validation now supports localized fields. (Tiago Rafael Godinho)

  • #1506 Model.set will now accept false and nil values. (Marten Veldthuis)

  • #1505 Model.delete_all/destroy_all now take either a :conditions hash or the attributes directly.

  • #1504 Model.recursively_embeds_many now accepts a :cascade_callbacks option. (Pavel Pravosud)

  • #1496 Mongoid now casts strings back to symbols for symbol fields that get saved as strings by another application.

  • #1454, #900 Associations now have an after_build callback that gets executed after .build or build_ methods are called. (Jeffrey Jones, Ryan Townsend)

  • #1451 Ranges can now be any range value, not just numbers. (aupajo)

  • #1448 Localization is now used when sorting. (Hans Hasselberg)

  • #1422 Mongoid raises an error at yaml load if no environment is found. (Tom Stuart)

  • #1413 $not support added to criteria symbol methods. (Marc Weil)

  • #1403 Added configuration option scope_overwrite_exception which defaults to false for raising an error when defining a named scope with the same name of an existing method. (Christoph Grabo)

  • #1388 model.add_to_set now supports adding multiple values and performs an $addToSet with $each under the covers. (Christian Felder)

  • #1387 Added Model#cache_key for use in Rails caching. (Seivan Heidari)

  • #1380 Calling Model.find(id) will now properly convert to and from any type based on the type of the _id field.

  • #1363 Added fallbacks and default support to localized fields, and added ability to get and set all translations at once.

  • #1362 Aliased fields now properly typecast in criteria.

  • #1337 Array fields, including HABTM many foreign keys now have smarter dirty checking and no longer perform a simple $set if the array has changed. If items have only been added to the array, it performs a $pushAll. If items have only been removed, it performs a $pullAll. If both additions and removals have occurred it performs a $set to avoid conflicting mods.

Resolved Issues

  • Calling Document#as_document on a frozen document on Rubinius returns the attributes instead of nil.

  • #1554 Split application of default values into proc/non-procs, where non-procs get executed immediately during instantiation, and procs get executed after all other values are set.

  • #1553 Combinations of adding and removing values from an array use a $set on the current contents of the array, not the new values.

  • #1546 Dirty changes should be returned in a hash with indifferent access.

  • #1542 Eager loading now respects the options (ie skip, limit) provided to the criteria when fetch the associations.

  • #1530 Don't duplicate added values to arrays via dirty tracking if the array is a foreign key field.

  • #1529 Calling unscoped on relational associations now works properly.

  • #1524 Allow access to relations in overridden field setters by pre-setting foreign key default values.

  • #1523 Allow disabling of observers via disable. (Jonas Schneider)

  • #1522 Fixed create indexes rake task for Rails 3.2. (Gray Manley)

  • #1517 Fix Mongoid documents to properly work with RSpec's stub_model. (Tiago Rafael Godinho)

  • #1516 Don't duplicate relational many documents on bind.

  • #1515 Mongoid no longer attempts to serialize custom fields on complex criteria by default.

  • #1503 Has many relation substitution now handles any kind of mix of existing and new docs.

  • #1502 Nested attributes on embedded documents respects if the child is paranoid.

  • #1497 Use provided message on failing uniqueness validation. (Justin Etheredge)

  • #1491 Return nil when no default set on localized fields. (Tiago Rafael Godinho)

  • #1483 Sending module includes at runtime which add new fields to a parent document, also have the fields added to subclasses.

  • #1482 Applying new sorting options does not merge into previously chained criteria. (Gerad Suyderhoud)

  • #1481 Fix invalid query when accessing many-to-many relations before defaults are set.

  • #1480 Mongoid's internal serialized field types renamespaced to Internal in order to not conflict with ruby core classes in custom serializable types.

  • #1479 Don't duplicate ids on many-to-many when using create or create!

  • #1469 When extract_id returns nil, get the document out of the identity map by the criteria selector.

  • #1467 Defining a field named metadata now properly raises an invalid field error.

  • #1463 Batch insert consumers are now scoped to collection to avoid persistence of documents to other collections in callbacks going to the wrong place.

  • #1462 Assigning has many relations via nested attribtues *_attributes= does not autosave the relation.

  • #1461 Fixed serialization of foreign key fields in complex criteria not to escape the entire hash.

  • #1458 Versioning no longer skips fields that have been protected from mass assignment.

  • #1455, #1456 Calling destroy on any document now temporarily marks it as flagged for destroy until the operation is complete. (Nader Akhnoukh)

  • #1453 Model#to_key should return a value when the document is destroyed.

  • #1449 New documents no longer get persisted when replaced on a has one as a side effect. (jasonsydes)

  • #1439 embedded? should return true when relation defined as cyclic.

  • #1433 Polymorphic nested attributes for embedded and relational 1-1 now update properly.

  • #1426 Frozen documents can now be cloned. (aagrawal2001)

  • #1382 Raise proper error when creating indexes via rake task if index definition is incorrect. (Mathieu Ravaux)

  • #1381, #1371 The identity map now functions properly with inherited documents. (Paul Canavese)

  • #1370 Split concat on embedded arrays into its own method to handle the batch processing due to after callback run execution issues.

  • #1366 Array and hash values now get deep copied for dirty tracking.

  • #1359 Provide ability to not have default scope applied to all named scopes via using lambdas.

  • #1333 Fixed errors with custom types that exist in namespaces. (Peter Gumeson)

  • #1259 Default values are treated as dirty if they differ from the database state.

  • #1255 Ensure embedded documents respect the defined default scope.

2.3.4

  • #1445 Prevent duplicate documents in the loaded array on the target enumerable for relational associations.

  • #1442 When using create_ methods for has one relations, the appropriate destructive methods now get called when replacing an existing document.

  • #1431 Enumerable context should add to the loaded array post yield, so that methods like #any? that short circuit based on the value of the block dont falsely have extra documents.

  • #1418 Documents being loaded from the database for revision purposes no longer get placed in the identity map.

  • #1399 Allow conversion of strings to integers in foreign keys where the id is defined as an int.

  • #1397 Don't add default sorting criteria on first if they sort criteria already exists.

  • #1394 Fix exists? to work when count is greater than 1. (Nick Hoffman)

  • #1392 Return 0 on aggregation functions where field is nonexistant.

  • #1391 Uniqueness validation now works properly on embedded documents that are using primary key definitions.

  • #1390 When _type field is lower case class camelize before constantizing.

  • #1383 Fix cast on read for serializable fields that are subclassed.

  • #1357 Delayed atomic sets from update_attributes on embedded documents multiple levels deep now properly persist.

  • #1326 Ensure base document on HABTM gets its keys saved after saving a newly build child document.

  • #1301 Don't overwrite base metadata on embedded in relations if already set.

  • #1221 HABTM with inverse nil is allowed again on embedded documents.

  • #1208 Don't auto-persist child documents via the setter when setting from an embedded_in.

  • #791 Root document updates its timestamps when only embedded documents have changed.

2.3.3

Resolved Issues

  • #1386 Lowered mongo/bson dependency to 1.3

  • #1377 Fix aggregation functions to properly handle nil or indefined values. (Maxime Garcia)

  • #1373 Warn if a scope overrides another scope.

  • #1372 Never persist when binding inside of a read attribute for validation.

  • #1364 Fixed reloading of documents with non bson object id ids.

  • #1360 Fixed performance of Mongoid's observer instantiation by hooking into Active Support's load hooks, a la AR.

  • #1358 Fixed type error on many to many synchronization when inverse_of is set to nil.

  • #1356 $in criteria can now be chained to non-complex criteria on the same key without error.

  • #1350, #1351 Fixed errors in the string conversions of double quotes and tilde when paramterizing keys.

  • #1349 Mongoid documents should not blow up when including Enumerable. (Jonas Nicklas)

2.3.2

Resolved Issues

  • #1347 Fix embedded matchers when provided a hash value that does not have a modifier as a key.

  • #1346 Dup default sorting criteria when calling first/last on a criteria.

  • #1343 When passing no arguments to Criteria#all_of return all documents. (Chris Leishman)

  • #1339 Ensure destroy callbacks are run on cascadable children when deleting via nested attributes.

  • #1324 Setting inverse_of: nil on a many-to-many referencing the same class returns nil for the inverse foreign key.

  • #1323 Allow both strings and symbols as ids in the attributes array for nested attributes. (Michael Wood)

  • #1312 Setting a logger on the config now accepts anything that quacks like a logger.

  • #1297 Don't hit the database when accessing relations if the base is new.

  • #1239 Allow appending of referenced relations in create blocks, post default set.

  • #1236 Ensure all models are loaded in rake tasks, so even in threadsafe mode all indexes can be created.

  • #736 Calling #reload on embedded documents now works properly.

2.3.1

Resolved Issues

  • #1338 Calling #find on a scope or relation checks that the document in the identity map actually matches other scope parameters.

  • #1321 HABTM no longer allows duplicate entries or keys, instead of the previous inconsistencies.

  • #1320 Fixed errors in perf benchmark.

  • #1316 Added a separate Rake task "db:mongoid:drop" so Mongoid and AR can coexist. (Daniel Vartanov)

  • #1311 Fix issue with custom field serialization inheriting from hash.

  • #1310 The referenced many enumerable target no longer duplicates loaded and added documents when the identity map is enabled.

  • #1295 Fixed having multiple includes only execute the eager loading of the first.

  • #1287 Fixed max versions limitation with versioning.

  • #1277 attribute_will_change! properly flags the attribute even if no change occured.

  • #1063 Paranoid documents properly run destroy callbacks on soft destroy.

  • #1061 Raise Mongoid::Errors::InvalidTime when time serialization fails.

  • #1002 Check for legal bson ids when attempting conversion.

  • #920 Allow relations to be named target.

  • #905 Return normalized class name in metadata if string was defined with a prefixed ::.

  • #861 accepts_nested_attributes_for is no longer needed to set embedded documents via a hash or array of hashes directly.

  • #857 Fixed cascading of dependent relations when base document is paranoid.

  • #768 Fixed class_attribute definitions module wide.

  • #408 Embedded documents can now be soft deleted via Mongoid::Paranoia.

2.3.0

New Features

  • Mongoid now supports basic localized fields, storing them under the covers as a hash of locale => value pairs. field :name, localize: true

  • #1275 For applications that default safe mode to true, you can now tell a single operation to persist without safe mode via #unsafely: person.unsafely.save, Person.unsafely.create. (Matt Sanders)

  • #1256 Mongoid now can create indexes for models in Rails engines. (Caio Filipini)

  • #1228 Allow pre formatting of compsoite keys by passing a block to #key. (Ben Hundley)

  • #1222 Scoped mass assignment is now supported. (Andrew Shaydurov)

  • #1196 Timestamps can now be turned off on a call-by-call basis via the use of #timeless: person.timeless.save, Person.timeless.create(:title => "Sir").

  • #1103 Allow developers to create their own custom complex criteria. (Ryan Ong)

  • Mongoid now includes all defined fields in serializable_hash and to_json results even if the fields have no values to make serialized documents easier to use by ActiveResource clients.

  • Support for MongoDB's $and operator is now available in the form of: Criteria#all_of(*args) where args is multiple hash expressions.

  • #1250, #1058 Embedded documents now can have their callbacks fired on a parent save by setting :cascade_callbacks => true on the relation. (pyromanic, Paul Rosania, Jak Charlton)

Major Changes

  • Mongoid now depends on Active Model 3.1 and higher.

  • Mongoid now depends on the Mongo Ruby Driver 1.4 and higher.

  • Mongoid requires MongoDB 2.0.0 and higher.

Resolved Issues

  • #1308 Fixed scoping of HABTM finds.

  • #1300 Namespaced models should handle recursive embedding properly.

  • #1299 Self referenced documents with versioning no longer fail when inverse_of is not defined on all relations.

  • #1296 Renamed internal building method to _building.

  • #1288, #1289 _id and updated_at should not be part of versioned attributes.

  • #1273 Mongoid.preload_models now checks if preload configuration option is set, where Mongoid.load_models always loads everything. (Ryan McGeary)

  • #1244 Has one relations now adhere to default dependant behaviour.

  • #1225 Fixed delayed persistence of embedded documents via $set.

  • #1166 Don't load config in Railtie if no env variables defined. (Terence Lee)

  • #1052 alias_attribute now works again as expected.

  • #939 Apply default attributes when upcasting via #becomes. (Christos Pappas)

  • #932 Fixed casting of integer fields with leading zeros.

  • #948 Reset version number on clone if versions existed.

  • #763 Don't merge $in criteria arrays when chaining named scopes.

  • #730 Existing models that have relations added post persistence of originals can now have new relations added with no migrations.

  • #726 Embedded documents with compound keys not validate uniqueness correctly.

  • #582 Cyclic non embedded relations now validate uniqueness correctly.

  • #484 Validates uniqueness with multiple scopes of all types now work properly.

  • Deleting versions created with Mongoid::Versioning no longer fires off dependent cascading on relations.

2.2.5

  • This was a small patch release to address 2.2.x Heroku errors during asset compilation.

2.2.4

  • #1377 Fix aggregation functions to properly handle nil or indefined values. (Maxime Garcia)

  • #1373 Warn if a scope overrides another scope.

  • #1372 Never persist when binding inside of a read attribute for validation.

  • #1358 Fixed type error on many to many synchronization when inverse_of is set to nil.

  • #1356 $in criteria can now be chained to non-complex criteria on the same key without error.

  • #1350, #1351 Fixed errors in the string conversions of double quotes and tilde when paramterizing keys.

  • #1349 Mongoid documents should not blow up when including Enumerable. (Jonas Nicklas)

2.2.3

  • #1295 Fixed having multiple includes only execute the eager loading of the first.

  • #1225 Fixed delayed persistence of embedded documents via $set.

  • #1002 Fix BSON object id conversion to check if legal first.

2.2.2

  • This release removes the restriction of a dependency on 1.3.x of the mongo ruby driver. Users may now use 1.3.x through 1.4.x.

2.2.1

Resolved Issues

  • #1210, #517 Allow embedded document relation queries to use dot notation. (Scott Ellard)

  • #1198 Enumerable target should use criteria count if loaded has no docs.

  • #1164 Get rid of remaining no method in_memory errors.

  • #1070 Allow custom field serializers to have their own constructors.

  • #1176 Allow access to parent documents from embedded docs in after_destroy callbacks.

  • #1191 Context group methods (min, max, sum) no longer return NaN but instead return nil if field doesn't exist or have values.

  • #1193, #1271 Always return Integers for integer fields with .000 precisions, not floats.

  • #1199 Fixed performance issues of hash and array field access when reading multiple times.

  • #1218 Fixed issues with relations referencing models with integer foreign keys.

  • #1219 Fixed various conflicting modifications issues when pushing and pulling from the same embedded document in a single call.

  • #1220 Metadata should not get overwritten by nil on binding.

  • #1231 Renamed Mongoid's atomic set class to Sets to avoid conflicts with Ruby's native Set after document inclusion.

  • #1232 Fix access to related models during before_destroy callbacks when cascading.

  • #1234 Fixed HABTM foreign key synchronization issues when destroying documents.

  • #1243 Polymorphic relations dont convert to object ids when querying if the ids are defined as strings.

  • #1247 Force Model.first to sort by ascending id to guarantee first document.

  • #1248 Added #unscoped to embedded many relations.

  • #1249 Destroy flags in nested attributes now actually destroy the document for has_many instead of just breaking the relation.

  • #1272 Don't modify configuration options in place when creating replica set connections.

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.

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