The handling for single database applications has always set a schema.rb or structure.sql files for loading the database schema. When we first implemented multiple database support we intended to keep this for the original, default database. Afterall Rails _has_ to connect to something on boot. In development only one connection is connected on boot since we don't eager load the app. Originally we had thought that all applications should be required to add a `primary` entry in the database configurations file. However, this hasn't worked in practice and we have some code now that does not assume there's a primary. The schema dumping/loading code however, still assumed there was a "primary" in the configurations file. We want the "default" database in any application to use the original files even when converted to a multiple database application as this reduces the need to make changes when implementing this functionality on an existing application. The changes here update Rails to ensure that we treat either "primary" or the first database configuration for an environment as "default". If there is a "primary" that will be used as the default configuration. If there is no primary the configuration that is first for an environment will be used as the default. For schema dump/load this means that the default configuration (primary or first) will use `schema.rb` as the filename and other configurations will use `[CONFIGURATION_NAME]_schema.rb`. This should also help us finish the pull request to infer migrations paths since now we can say the first configuration is the default. This is a natural assumption for application developers. Followup to #39536
31 KiB
-
Ensure the default configuration is considered primary or first for an environment
If a multiple database application provides a configuration named primary, that will be treated as default. In applications that do not have a primary entry, the default database configuration will be the first configuration for an environment.
Eileen M. Uchitelle
-
Allow
where
references association names as joined table name aliases.class Comment < ActiveRecord::Base enum label: [:default, :child] has_many :children, class_name: "Comment", foreign_key: :parent_id end # ... FROM comments LEFT OUTER JOIN comments children ON ... WHERE children.label = 1 Comment.includes(:children).where("children.label": "child")
Ryuta Kamizono
-
Support storing demodulized class name for polymorphic type.
Before Rails 6.1, storing demodulized class name is supported only for STI type by
store_full_sti_class
class attribute.Now
store_full_class_name
class attribute can handle both STI and polymorphic types.Ryuta Kamizono
-
Deprecate
rails db:structure:{load, dump}
tasks and extendrails db:schema:{load, dump}
tasks to work with either:ruby
or:sql
format, depending onconfig.active_record.schema_format
configuration value.fatkodima
-
Respect the
select
values for eager loading.post = Post.select("UPPER(title) AS title").first post.title # => "WELCOME TO THE WEBLOG" post.body # => ActiveModel::MissingAttributeError # Rails 6.0 (ignore the `select` values) post = Post.select("UPPER(title) AS title").eager_load(:comments).first post.title # => "Welcome to the weblog" post.body # => "Such a lovely day" # Rails 6.1 (respect the `select` values) post = Post.select("UPPER(title) AS title").eager_load(:comments).first post.title # => "WELCOME TO THE WEBLOG" post.body # => ActiveModel::MissingAttributeError
Ryuta Kamizono
-
Allow attribute's default to be configured but keeping its own type.
class Post < ActiveRecord::Base attribute :written_at, default: -> { Time.now.utc } end # Rails 6.0 Post.type_for_attribute(:written_at) # => #<Type::Value ... precision: nil, ...> # Rails 6.1 Post.type_for_attribute(:written_at) # => #<Type::DateTime ... precision: 6, ...>
Ryuta Kamizono
-
Allow default to be configured for Enum.
class Book < ActiveRecord::Base enum status: [:proposed, :written, :published], _default: :published end Book.new.status # => "published"
Ryuta Kamizono
-
Deprecate YAML loading from legacy format older than Rails 5.0.
Ryuta Kamizono
-
Added the setting
ActiveRecord::Base.immutable_strings_by_default
, which allows you to specify that all string columns should be frozen unless otherwise specified. This will reduce memory pressure for applications which do not generally mutate string properties of Active Record objects.Sean Griffin
-
Deprecate
map!
andcollect!
onActiveRecord::Result
.Ryuta Kamizono
-
Support
relation.and
for intersection as Set theory.david_and_mary = Author.where(id: [david, mary]) mary_and_bob = Author.where(id: [mary, bob]) david_and_mary.merge(mary_and_bob) # => [mary, bob] david_and_mary.and(mary_and_bob) # => [mary] david_and_mary.or(mary_and_bob) # => [david, mary, bob]
Ryuta Kamizono
-
Merging conditions on the same column no longer maintain both conditions, and will be consistently replaced by the latter condition in Rails 6.2. To migrate to Rails 6.2's behavior, use
relation.merge(other, rewhere: true)
.# Rails 6.1 (IN clause is replaced by merger side equality condition) Author.where(id: [david.id, mary.id]).merge(Author.where(id: bob)) # => [bob] # Rails 6.1 (both conflict conditions exists, deprecated) Author.where(id: david.id..mary.id).merge(Author.where(id: bob)) # => [] # Rails 6.1 with rewhere to migrate to Rails 6.2's behavior Author.where(id: david.id..mary.id).merge(Author.where(id: bob), rewhere: true) # => [bob] # Rails 6.2 (same behavior with IN clause, mergee side condition is consistently replaced) Author.where(id: [david.id, mary.id]).merge(Author.where(id: bob)) # => [bob] Author.where(id: david.id..mary.id).merge(Author.where(id: bob)) # => [bob]
Ryuta Kamizono
-
Do not mark Postgresql MAC address and UUID attributes as changed when the assigned value only varies by case.
Peter Fry
-
Resolve issue with insert_all unique_by option when used with expression index.
When the
:unique_by
option ofActiveRecord::Persistence.insert_all
andActiveRecord::Persistence.upsert_all
was used with the name of an expression index, an error was raised. Adding a guard around the formatting behavior for the:unique_by
corrects this.Usage:
create_table :books, id: :integer, force: true do |t| t.column :name, :string t.index "lower(name)", unique: true end Book.insert_all [{ name: "MyTest" }], unique_by: :index_books_on_lower_name
Fixes #39516.
Austen Madden
-
Add basic support for CHECK constraints to database migrations.
Usage:
add_check_constraint :products, "price > 0", name: "price_check" remove_check_constraint :products, name: "price_check"
fatkodima
-
Add
ActiveRecord::Base.strict_loading_by_default
andActiveRecord::Base.strict_loading_by_default=
to enable/disable strict_loading mode by default for a model. The configuration's value is inheritable by subclasses, but they can override that value and it will not impact parent class.Usage:
class Developer < ApplicationRecord self.strict_loading_by_default = true has_many :projects end dev = Developer.first dev.projects.first # => ActiveRecord::StrictLoadingViolationError Exception: Developer is marked as strict_loading and Project cannot be lazily loaded.
bogdanvlviv
-
Deprecate passing an Active Record object to
quote
/type_cast
directly.Ryuta Kamizono
-
Default engine
ENGINE=InnoDB
is no longer dumped to make schema more agnostic.Before:
create_table "accounts", options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci", force: :cascade do |t| end
After:
create_table "accounts", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t| end
Ryuta Kamizono
-
Added delegated type as an alternative to single-table inheritance for representing class hierarchies. See ActiveRecord::DelegatedType for the full description.
DHH
-
Deprecate aggregations with group by duplicated fields.
To migrate to Rails 6.2's behavior, use
uniq!(:group)
to deduplicate group fields.accounts = Account.group(:firm_id) # duplicated group fields, deprecated. accounts.merge(accounts.where.not(credit_limit: nil)).sum(:credit_limit) # => { # [1, 1] => 50, # [2, 2] => 60 # } # use `uniq!(:group)` to deduplicate group fields. accounts.merge(accounts.where.not(credit_limit: nil)).uniq!(:group).sum(:credit_limit) # => { # 1 => 50, # 2 => 60 # }
Ryuta Kamizono
-
Deprecate duplicated query annotations.
To migrate to Rails 6.2's behavior, use
uniq!(:annotate)
to deduplicate query annotations.accounts = Account.where(id: [1, 2]).annotate("david and mary") # duplicated annotations, deprecated. accounts.merge(accounts.rewhere(id: 3)) # SELECT accounts.* FROM accounts WHERE accounts.id = 3 /* david and mary */ /* david and mary */ # use `uniq!(:annotate)` to deduplicate annotations. accounts.merge(accounts.rewhere(id: 3)).uniq!(:annotate) # SELECT accounts.* FROM accounts WHERE accounts.id = 3 /* david and mary */
Ryuta Kamizono
-
Resolve conflict between counter cache and optimistic locking.
Bump an Active Record instance's lock version after updating its counter cache. This avoids raising an unnecessary
ActiveRecord::StaleObjectError
upon subsequent transactions by maintaining parity with the corresponding database record'slock_version
column.Fixes #16449.
Aaron Lipman
-
Support merging option
:rewhere
to allow mergee side condition to be replaced exactly.david_and_mary = Author.where(id: david.id..mary.id) # both conflict conditions exists david_and_mary.merge(Author.where(id: bob)) # => [] # mergee side condition is replaced by rewhere david_and_mary.merge(Author.rewhere(id: bob)) # => [bob] # mergee side condition is replaced by rewhere option david_and_mary.merge(Author.where(id: bob), rewhere: true) # => [bob]
Ryuta Kamizono
-
Add support for finding records based on signed ids, which are tamper-proof, verified ids that can be set to expire and scoped with a purpose. This is particularly useful for things like password reset or email verification, where you want the bearer of the signed id to be able to interact with the underlying record, but usually only within a certain time period.
signed_id = User.first.signed_id expires_in: 15.minutes, purpose: :password_reset User.find_signed signed_id # => nil, since the purpose does not match travel 16.minutes User.find_signed signed_id, purpose: :password_reset # => nil, since the signed id has expired travel_back User.find_signed signed_id, purpose: :password_reset # => User.first User.find_signed! "bad data" # => ActiveSupport::MessageVerifier::InvalidSignature
DHH
-
Support
ALGORITHM = INSTANT
DDL option for index operations on MySQL.Ryuta Kamizono
-
Fix index creation to preserve index comment in bulk change table on MySQL.
Ryuta Kamizono
-
Allow
unscope
to be aware of table name qualified values.It is possible to unscope only the column in the specified table.
posts = Post.joins(:comments).group(:"posts.hidden") posts = posts.where("posts.hidden": false, "comments.hidden": false) posts.count # => { false => 10 } # unscope both hidden columns posts.unscope(where: :hidden).count # => { false => 11, true => 1 } # unscope only comments.hidden column posts.unscope(where: :"comments.hidden").count # => { false => 11 }
Ryuta Kamizono, Slava Korolev
-
Fix
rewhere
to truly overwrite collided where clause by new where clause.steve = Person.find_by(name: "Steve") david = Author.find_by(name: "David") relation = Essay.where(writer: steve) # Before relation.rewhere(writer: david).to_a # => [] # After relation.rewhere(writer: david).to_a # => [david]
Ryuta Kamizono
-
Inspect time attributes with subsec.
p Knot.create => #<Knot id: 1, created_at: "2016-05-05 01:29:47.116928000">
akinomaeni
-
Deprecate passing a column to
type_cast
.Ryuta Kamizono
-
Deprecate
in_clause_length
andallowed_index_name_length
inDatabaseLimits
.Ryuta Kamizono
-
Support bulk insert/upsert on relation to preserve scope values.
Josef Šimánek, Ryuta Kamizono
-
Preserve column comment value on changing column name on MySQL.
Islam Taha
-
Add support for
if_exists
option for removing an index.The
remove_index
method can take anif_exists
option. If this is set to true an error won't be raised if the index doesn't exist.Eileen M. Uchitelle
-
Remove ibm_db, informix, mssql, oracle, and oracle12 Arel visitors which are not used in the code base.
Ryuta Kamizono
-
Prevent
build_association
fromtouching
a parent record if the record isn't persisted forhas_one
associations.Fixes #38219.
Josh Brody
-
Add support for
if_not_exists
option for adding index.The
add_index
method respectsif_not_exists
option. If it is set to true index won't be added.Usage:
add_index :users, :account_id, if_not_exists: true
The
if_not_exists
option passed tocreate_table
also gets propagated to indexes created within that migration so that if table and its indexes exist then there is no attempt to create them again.Prathamesh Sonpatki
-
Add
ActiveRecord::Base#previously_new_record?
to show if a record was new before the last save.Tom Ward
-
Support descending order for
find_each
,find_in_batches
, andin_batches
.Batch processing methods allow you to work with the records in batches, greatly reducing memory consumption, but records are always batched from oldest id to newest.
This change allows reversing the order, batching from newest to oldest. This is useful when you need to process newer batches of records first.
Pass
order: :desc
to yield batches in descending order. The default remainsorder: :asc
.Person.find_each(order: :desc) do |person| person.party_all_night! end
Alexey Vasiliev
-
Fix
insert_all
with enum values.Fixes #38716.
Joel Blum
-
Add support for
db:rollback:name
for multiple database applications.Multiple database applications will now raise if
db:rollback
is call and recommend using thedb:rollback:[NAME]
to rollback migrations.Eileen M. Uchitelle
-
Relation#pick
now uses already loaded results instead of making another query.Eugene Kenny
-
Deprecate using
return
,break
orthrow
to exit a transaction block after writes.Dylan Thacker-Smith
-
Dump the schema or structure of a database when calling
db:migrate:name
.In previous versions of Rails,
rails db:migrate
would dump the schema of the database. In Rails 6, that holds true (rails db:migrate
dumps all databases' schemas), butrails db:migrate:name
does not share that behavior.Going forward, calls to
rails db:migrate:name
will dump the schema (or structure) of the database being migrated.Kyle Thompson
-
Reset the
ActiveRecord::Base
connection afterrails db:migrate:name
.When
rails db:migrate
has finished, it ensures theActiveRecord::Base
connection is reset to its original configuration. Going forward,rails db:migrate:name
will have the same behavior.Kyle Thompson
-
Disallow calling
connected_to
on subclasses ofActiveRecord::Base
.Behavior has not changed here but the previous API could be misleading to people who thought it would switch connections for only that class.
connected_to
switches the context from which we are getting connections, not the connections themselves.Eileen M. Uchitelle, John Crepezzi
-
Add support for horizontal sharding to
connects_to
andconnected_to
.Applications can now connect to multiple shards and switch between their shards in an application. Note that the shard swapping is still a manual process as this change does not include an API for automatic shard swapping.
Usage:
Given the following configuration:
# config/database.yml production: primary: database: my_database primary_shard_one: database: my_database_shard_one
Connect to multiple shards:
class ApplicationRecord < ActiveRecord::Base self.abstract_class = true connects_to shards: { default: { writing: :primary }, shard_one: { writing: :primary_shard_one } }
Swap between shards in your controller / model code:
ActiveRecord::Base.connected_to(shard: :shard_one) do # Read from shard one end
The horizontal sharding API also supports read replicas. See guides for more details.
Eileen M. Uchitelle, John Crepezzi
-
Deprecate
spec_name
in favor ofname
on database configurations.The accessors for
spec_name
onconfigs_for
andDatabaseConfig
are deprecated. Please usename
instead.Deprecated behavior:
db_config = ActiveRecord::Base.configs_for(env_name: "development", spec_name: "primary") db_config.spec_name
New behavior:
db_config = ActiveRecord::Base.configs_for(env_name: "development", name: "primary") db_config.name
Eileen M. Uchitelle
-
Add additional database-specific rake tasks for multi-database users.
Previously,
rails db:create
,rails db:drop
, andrails db:migrate
were the only rails tasks that could operate on a single database. For example:rails db:create rails db:create:primary rails db:create:animals rails db:drop rails db:drop:primary rails db:drop:animals rails db:migrate rails db:migrate:primary rails db:migrate:animals
With these changes,
rails db:schema:dump
,rails db:schema:load
,rails db:structure:dump
,rails db:structure:load
andrails db:test:prepare
can additionally operate on a single database. For example:rails db:schema:dump rails db:schema:dump:primary rails db:schema:dump:animals rails db:schema:load rails db:schema:load:primary rails db:schema:load:animals rails db:structure:dump rails db:structure:dump:primary rails db:structure:dump:animals rails db:structure:load rails db:structure:load:primary rails db:structure:load:animals rails db:test:prepare rails db:test:prepare:primary rails db:test:prepare:animals
Kyle Thompson
-
Add support for
strict_loading
mode on association declarations.Raise an error if attempting to load a record from an association that has been marked as
strict_loading
unless it was explicitly eager loaded.Usage:
class Developer < ApplicationRecord has_many :projects, strict_loading: true end dev = Developer.first dev.projects.first # => ActiveRecord::StrictLoadingViolationError: The projects association is marked as strict_loading and cannot be lazily loaded.
Kevin Deisz
-
Add support for
strict_loading
mode to prevent lazy loading of records.Raise an error if a parent record is marked as
strict_loading
and attempts to lazily load its associations. This is useful for finding places you may want to preload an association and avoid additional queries.Usage:
dev = Developer.strict_loading.first dev.audit_logs.to_a # => ActiveRecord::StrictLoadingViolationError: Developer is marked as strict_loading and AuditLog cannot be lazily loaded.
Eileen M. Uchitelle, Aaron Patterson
-
Add support for PostgreSQL 11+ partitioned indexes when using
upsert_all
.Sebastián Palma
-
Adds support for
if_not_exists
toadd_column
andif_exists
toremove_column
.Applications can set their migrations to ignore exceptions raised when adding a column that already exists or when removing a column that does not exist.
Example Usage:
class AddColumnTitle < ActiveRecord::Migration[6.1] def change add_column :posts, :title, :string, if_not_exists: true end end
class RemoveColumnTitle < ActiveRecord::Migration[6.1] def change remove_column :posts, :title, if_exists: true end end
Eileen M. Uchitelle
-
Regexp-escape table name for MS SQL Server.
Add
Regexp.escape
to one method in ActiveRecord, so that table names with regular expression characters in them work as expected. Since MS SQL Server uses "[" and "]" to quote table and column names, and those characters are regular expression characters, methods likepluck
andselect
fail in certain cases when used with the MS SQL Server adapter.Larry Reid
-
Store advisory locks on their own named connection.
Previously advisory locks were taken out against a connection when a migration started. This works fine in single database applications but doesn't work well when migrations need to open new connections which results in the lock getting dropped.
In order to fix this we are storing the advisory lock on a new connection with the connection specification name
AdvisoryLockBase
. The caveat is that we need to maintain at least 2 connections to a database while migrations are running in order to do this.Eileen M. Uchitelle, John Crepezzi
-
Allow schema cache path to be defined in the database configuration file.
For example:
development: adapter: postgresql database: blog_development pool: 5 schema_cache_path: tmp/schema/main.yml
Katrina Owen
-
Deprecate
#remove_connection
in favor of#remove_connection_pool
when called on the handler.#remove_connection
is deprecated in order to support returning aDatabaseConfig
object instead of aHash
. Use#remove_connection_pool
,#remove_connection
will be removed in 6.2.Eileen M. Uchitelle, John Crepezzi
-
Deprecate
#default_hash
and it's alias#[]
on database configurations.Applications should use
configs_for
.#default_hash
and#[]
will be removed in 6.2.Eileen M. Uchitelle, John Crepezzi
-
Add scale support to
ActiveRecord::Validations::NumericalityValidator
.Gannon McGibbon
-
Find orphans by looking for missing relations through chaining
where.missing
:Before:
Post.left_joins(:author).where(authors: { id: nil })
After:
Post.where.missing(:author)
Tom Rossi
-
Ensure
:reading
connections always raise if a write is attempted.Now Rails will raise an
ActiveRecord::ReadOnlyError
if any connection on the reading handler attempts to make a write. If your reading role needs to write you should name the role something other than:reading
.Eileen M. Uchitelle
-
Deprecate
"primary"
as theconnection_specification_name
forActiveRecord::Base
."primary"
has been deprecated as theconnection_specification_name
forActiveRecord::Base
in favor of using"ActiveRecord::Base"
. This change affects calls toActiveRecord::Base.connection_handler.retrieve_connection
andActiveRecord::Base.connection_handler.remove_connection
. If you're calling these methods with"primary"
, please switch to"ActiveRecord::Base"
.Eileen M. Uchitelle, John Crepezzi
-
Add
ActiveRecord::Validations::NumericalityValidator
with support for casting floats using a database columns' precision value.Gannon McGibbon
-
Enforce fresh ETag header after a collection's contents change by adding ActiveRecord::Relation#cache_key_with_version. This method will be used by ActionController::ConditionalGet to ensure that when collection cache versioning is enabled, requests using ConditionalGet don't return the same ETag header after a collection is modified.
Fixes #38078.
Aaron Lipman
-
Skip test database when running
db:create
ordb:drop
in development withDATABASE_URL
set.Brian Buchalter
-
Don't allow mutations on the database configurations hash.
Freeze the configurations hash to disallow directly changing it. If applications need to change the hash, for example to create databases for parallelization, they should use the
DatabaseConfig
object directly.Before:
@db_config = ActiveRecord::Base.configurations.configs_for(env_name: "test", spec_name: "primary") @db_config.configuration_hash.merge!(idle_timeout: "0.02")
After:
@db_config = ActiveRecord::Base.configurations.configs_for(env_name: "test", spec_name: "primary") config = @db_config.configuration_hash.merge(idle_timeout: "0.02") db_config = ActiveRecord::DatabaseConfigurations::HashConfig.new(@db_config.env_name, @db_config.spec_name, config)
Eileen M. Uchitelle, John Crepezzi
-
Remove
:connection_id
from thesql.active_record
notification.Aaron Patterson, Rafael Mendonça França
-
The
:name
key will no longer be returned as part ofDatabaseConfig#configuration_hash
. Please useDatabaseConfig#owner_name
instead.Eileen M. Uchitelle, John Crepezzi
-
ActiveRecord's
belongs_to_required_by_default
flag can now be set per model.You can now opt-out/opt-in specific models from having their associations required by default.
This change is meant to ease the process of migrating all your models to have their association required.
Edouard Chin
-
The
connection_config
method has been deprecated, please useconnection_db_config
instead which will return aDatabaseConfigurations::DatabaseConfig
instead of aHash
.Eileen M. Uchitelle, John Crepezzi
-
Retain explicit selections on the base model after applying
includes
andjoins
.Resolves #34889.
Patrick Rebsch
-
The
database
kwarg is deprecated without replacement because it can't be used for sharding and creates an issue if it's used during a request. Applications that need to create new connections should useconnects_to
instead.Eileen M. Uchitelle, John Crepezzi
-
Allow attributes to be fetched from Arel node groupings.
Jeff Emminger, Gannon McGibbon
-
A database URL can now contain a querystring value that contains an equal sign. This is needed to support passing PostgreSQL
options
.Joshua Flanagan
-
Calling methods like
establish_connection
with aHash
which is invalid (eg: noadapter
) will now raise an error the same way as connections defined inconfig/database.yml
.John Crepezzi
-
Specifying
implicit_order_column
now subsorts the records by primary key if available to ensure deterministic results.Paweł Urbanek
-
where(attr => [])
now loads an empty result without making a query.John Hawthorn
-
Fixed the performance regression for
primary_keys
introduced MySQL 8.0.Hiroyuki Ishii
-
Add support for
belongs_to
tohas_many
inversing.Gannon McGibbon
-
Allow length configuration for
has_secure_token
method. The minimum length is set at 24 characters.Before:
has_secure_token :auth_token
After:
has_secure_token :default_token # 24 characters has_secure_token :auth_token, length: 36 # 36 characters has_secure_token :invalid_token, length: 12 # => ActiveRecord::SecureToken::MinimumLengthError
Bernardo de Araujo
-
Deprecate
DatabaseConfigurations#to_h
. These connection hashes are still available viaActiveRecord::Base.configurations.configs_for
.Eileen Uchitelle, John Crepezzi
-
Add
DatabaseConfig#configuration_hash
to return database configuration hashes with symbol keys, and use all symbol-key configuration hashes internally. DeprecateDatabaseConfig#config
which returns a String-keyedHash
with the same values.John Crepezzi, Eileen Uchitelle
-
Allow column names to be passed to
remove_index
positionally along with other options.Passing other options can be necessary to make
remove_index
correctly reversible.Before:
add_index :reports, :report_id # => works add_index :reports, :report_id, unique: true # => works remove_index :reports, :report_id # => works remove_index :reports, :report_id, unique: true # => ArgumentError
After:
remove_index :reports, :report_id, unique: true # => works
Eugene Kenny
-
Allow bulk
ALTER
statements to drop and recreate indexes with the same name.Eugene Kenny
-
insert
,insert_all
,upsert
, andupsert_all
now clear the query cache.Eugene Kenny
-
Call
while_preventing_writes
directly fromconnected_to
.In some cases application authors want to use the database switching middleware and make explicit calls with
connected_to
. It's possible for an app to turn off writes and not turn them back on by the time we callconnected_to(role: :writing)
.This change allows apps to fix this by assuming if a role is writing we want to allow writes, except in the case it's explicitly turned off.
Eileen M. Uchitelle
-
Improve detection of ActiveRecord::StatementTimeout with mysql2 adapter in the edge case when the query is terminated during filesort.
Kir Shatrov
-
Stop trying to read yaml file fixtures when loading Active Record fixtures.
Gannon McGibbon
-
Deprecate
.reorder(nil)
with.first
/.first!
taking non-deterministic result.To continue taking non-deterministic result, use
.take
/.take!
instead.Ryuta Kamizono
-
Ensure custom PK types are casted in through reflection queries.
Gannon McGibbon
-
Preserve user supplied joins order as much as possible.
Fixes #36761, #34328, #24281, #12953.
Ryuta Kamizono
-
Allow
matches_regex
anddoes_not_match_regexp
on the MySQL Arel visitor.James Pearson
-
Allow specifying fixtures to be ignored by setting
ignore
in YAML file's '_fixture' section.Tongfei Gao
-
Make the DATABASE_URL env variable only affect the primary connection. Add new env variables for multiple databases.
John Crepezzi, Eileen Uchitelle
-
Add a warning for enum elements with 'not_' prefix.
class Foo enum status: [:sent, :not_sent] end
Edu Depetris
-
Make currency symbols optional for money column type in PostgreSQL.
Joel Schneider
-
Add support for beginless ranges, introduced in Ruby 2.7.
Josh Goodall
-
Add
database_exists?
method to connection adapters to check if a database exists.Guilherme Mansur
-
Loading the schema for a model that has no
table_name
raises aTableNotSpecified
error.Guilherme Mansur, Eugene Kenny
-
PostgreSQL: Fix GROUP BY with ORDER BY virtual count attribute.
Fixes #36022.
Ryuta Kamizono
-
Make ActiveRecord
ConnectionPool.connections
method thread-safe.Fixes #36465.
Jeff Doering
-
Add support for multiple databases to
rails db:abort_if_pending_migrations
.Mark Lee
-
Fix sqlite3 collation parsing when using decimal columns.
Martin R. Schuster
-
Fix invalid schema when primary key column has a comment.
Fixes #29966.
Guilherme Goettems Schneider
-
Fix table comment also being applied to the primary key column.
Guilherme Goettems Schneider
-
Allow generated
create_table
migrations to include or skip timestamps.Michael Duchemin
Please check 6-0-stable for previous changes.