1 files changed, 439 insertions, 4 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index d0e900c305..97af75546d 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,438 @@
+*   Raise error when has_many through is defined before through association
+
+    Fixes #26834
+
+    *Chris Holmes*
+
+*   Deprecate passing `name` to `indexes`.
+
+    *Ryuta Kamizono*
+
+*   Remove deprecated tasks: `db:test:clone`, `db:test:clone_schema`, `db:test:clone_structure`.
+
+    *Rafel Mendonça França*
+
+*   Compare deserialized values for `PostgreSQL::OID::Hstore` types when
+    calling `ActiveRecord::Dirty#changed_in_place?`.
+
+    Fixes #27502.
+
+    *Jon Moss*
+
+*   Raise `ArgumentError` when passing an `ActiveRecord::Base` instance to `.find`,
+    `.exists?` and `.update`.
+
+    *Rafael Mendonça França*
+
+*   Respect precision option for arrays of timestamps.
+
+    Fixes #27514.
+
+    *Sean Griffin*
+
+*   Optimize slow model instantiation when using STI and `store_full_sti_class = false` option.
+
+    *Konstantin Lazarev*
+
+*   Add `touch` option to counter cache modifying methods.
+
+    Works when updating, resetting, incrementing and decrementing counters:
+
+        # Touches `updated_at`/`updated_on`.
+        Topic.increment_counter(:messages_count, 1, touch: true)
+        Topic.decrement_counter(:messages_count, 1, touch: true)
+
+        # Touches `last_discussed_at`.
+        Topic.reset_counters(18, :messages, touch: :last_discussed_at)
+
+        # Touches `updated_at` and `last_discussed_at`.
+        Topic.update_counters(18, messages_count: 5, touch: %i( updated_at last_discussed_at ))
+
+    Fixes #26724.
+
+    *Jarred Trost*
+
+*   Remove deprecated `#uniq`, `#uniq!`, and `#uniq_value`.
+
+    *Ryuta Kamizono*
+
+*   Remove deprecated `#insert_sql`, `#update_sql`, and `#delete_sql`.
+
+    *Ryuta Kamizono*
+
+*   Remove deprecated `#use_transactional_fixtures` configuration.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated `#raise_in_transactional_callbacks` configuration.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated `#load_schema_for`.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated conditions parameter from `#destroy_all` and `#delete_all`.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated support to passing arguments to `#select` when a block is provided.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated support to query using commas on LIMIT.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated support to passing a class as a value in a query.
+
+    *Rafael Mendonça França*
+
+*   Raise `ActiveRecord::IrreversibleOrderError` when using `last` with an irreversible
+    order.
+
+    *Rafael Mendonça França*
+
+*   Raise when a `has_many :through` association has an ambiguous reflection name.
+
+    *Rafael Mendonça França*
+
+*   Raise when `ActiveRecord::Migration` is inherited from directly.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated `original_exception` argument in `ActiveRecord::StatementInvalid#initialize`
+    and `ActiveRecord::StatementInvalid#original_exception`.
+
+    *Rafael Mendonça França*
+
+*   `#tables` and `#table_exists?` return only tables and not views.
+
+    All the deprecations on those methods were removed.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated `name` argument from `#tables`.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated support to passing a column to `#quote`.
+
+    *Rafael Mendonça França*
+
+*   Set `:time` as a timezone aware type and remove deprecation when
+    `config.active_record.time_zone_aware_types` is not explictly set.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated force reload argument in singular and collection association readers.
+
+    *Rafael Mendonça França*
+
+*   Remove deprecated `activerecord.errors.messages.restrict_dependent_destroy.one` and
+    `activerecord.errors.messages.restrict_dependent_destroy.many` i18n scopes.
+
+    *Rafael Mendonça França*
+
+*   Allow passing extra flags to `db:structure:load` and `db:structure:dump`
+
+    Introduces `ActiveRecord::Tasks::DatabaseTasks.structure_(load|dump)_flags` to customize the
+    eventual commands run against the database, e.g. mysqldump/pg_dump.
+
+    *Kir Shatrov*
+
+*   Notifications see frozen SQL string.
+
+    Fixes #23774.
+
+    *Richard Monette*
+
+*   RuntimeErrors are no longer translated to `ActiveRecord::StatementInvalid`.
+
+    *Richard Monette*
+
+*   Change the schema cache format to use YAML instead of Marshal.
+
+    *Kir Shatrov*
+
+*   Support index length and order options using both string and symbol
+    column names.
+
+    Fixes #27243.
+
+    *Ryuta Kamizono*
+
+*   Raise `ActiveRecord::RangeError` when values that executed are out of range.
+
+    *Ryuta Kamizono*
+
+*   Raise `ActiveRecord::NotNullViolation` when a record cannot be inserted
+    or updated because it would violate a not null constraint.
+
+    *Ryuta Kamizono*
+
+*   Emulate db trigger behaviour for after_commit :destroy, :update.
+
+    Race conditions can occur when an ActiveRecord is destroyed
+    twice or destroyed and updated. The callbacks should only be
+    triggered once, similar to a SQL database trigger.
+
+    *Stefan Budeanu*
+
+*   Moved `DecimalWithoutScale`, `Text`, and `UnsignedInteger` from Active Model to Active Record.
+
+    *Iain Beeston*
+
+*   Fix `write_attribute` method to check whether an attribute is aliased or not, and
+    use the aliased attribute name if needed.
+
+    *Prathamesh Sonpatki*
+
+*   Fix `read_attribute` method to check whether an attribute is aliased or not, and
+    use the aliased attribute name if needed.
+
+    Fixes #26417.
+
+    *Prathamesh Sonpatki*
+
+*   PostgreSQL & MySQL: Use big integer as primary key type for new tables.
+
+    *Jon McCartie*, *Pavel Pravosud*
+
+*   Change the type argument of `ActiveRecord::Base#attribute` to be optional.
+    The default is now `ActiveRecord::Type::Value.new`, which provides no type
+    casting behavior.
+
+    *Sean Griffin*
+
+*   Don't treat unsigned integers with zerofill as signed.
+
+    Fixes #27125.
+
+    *Ryuta Kamizono*
+
+*   Fix the uniqueness validation scope with a polymorphic association.
+
+    *Sergey Alekseev*
+
+*   Raise `ActiveRecord::RecordNotFound` from collection `*_ids` setters
+    for unknown IDs with a better error message.
+
+    Changes the collection `*_ids` setters to cast provided IDs the data
+    type of the primary key set in the association, not the model
+    primary key.
+
+    *Dominic Cleal*
+
+*   For PostgreSQL >= 9.4 use `pgcrypto`'s `gen_random_uuid()` instead of
+    `uuid-ossp`'s UUID generation function.
+
+    *Yuji Yaginuma*, *Yaw Boakye*
+
+*   Introduce `Model#reload_<association>` to bring back the behavior
+    of `Article.category(true)` where `category` is a singular
+    association.
+
+    The force reloading of the association reader was deprecated
+    in #20888. Unfortunately the suggested alternative of
+    `article.reload.category` does not expose the same behavior.
+
+    This patch adds a reader method with the prefix `reload_` for
+    singular associations. This method has the same semantics as
+    passing true to the association reader used to have.
+
+    *Yves Senn*
+
+*   Make sure eager loading `ActiveRecord::Associations` also loads
+    constants defined in `ActiveRecord::Associations::Preloader`.
+
+    *Yves Senn*
+
+*   Allow `ActionController::Parameters`-like objects to be passed as
+    values for Postgres HStore columns.
+
+    Fixes #26904.
+
+    *Jon Moss*
+
+*   Added `stat` method to `ActiveRecord::ConnectionAdapters::ConnectionPool`.
+
+    Example:
+
+        ActiveRecord::Base.connection_pool.stat # =>
+        { size: 15, connections: 1, busy: 1, dead: 0, idle: 0, waiting: 0, checkout_timeout: 5 }
+
+    *Pavel Evstigneev*
+
+*   Avoid `unscope(:order)` when `limit_value` is presented for `count`
+    and `exists?`.
+
+    If `limit_value` is presented, records fetching order is very important
+    for performance. We should not unscope the order in the case.
+
+    *Ryuta Kamizono*
+
+*   Fix an Active Record `DateTime` field `NoMethodError` caused by incomplete
+    datetime.
+
+    Fixes #24195.
+
+    *Sen Zhang*
+
+*   Allow `slice` to take an array of methods(without the need for splatting).
+
+    *Cohen Carlisle*
+
+*   Improved partial writes with HABTM and has many through associations
+    to fire database query only if relation has been changed.
+
+    Fixes #19663.
+
+    *Mehmet Emin İNAÇ*
+
+*   Deprecate passing arguments and block at the same time to
+    `ActiveRecord::QueryMethods#select`.
+
+    *Prathamesh Sonpatki*
+
+*   Optimistic locking: Added ability to update `locking_column` value.
+    Ignore optimistic locking if trying to update with new `locking_column` value.
+
+    *bogdanvlviv*
+
+*   Fixed: Optimistic locking does not work well with `null` in the database.
+
+    Fixes #26024.
+
+    *bogdanvlviv*
+
+*   Fixed support for case insensitive comparisons of `text` columns in
+    PostgreSQL.
+
+    *Edho Arief*
+
+*   Serialize JSON attribute value `nil` as SQL `NULL`, not JSON `null`.
+
+    *Trung Duc Tran*
+
+*   Return `true` from `update_attribute` when the value of the attribute
+    to be updated is unchanged.
+
+    Fixes #26593.
+
+    *Prathamesh Sonpatki*
+
+*   Always store errors details information with symbols.
+
+    When the association is autosaved we were storing the details with
+    string keys. This was creating inconsistency with other details that are
+    added using the `Errors#add` method. It was also inconsistent with the
+    `Errors#messages` storage.
+
+    To fix this inconsistency we are always storing with symbols. This will
+    cause a small breaking change because in those cases the details could
+    be accessed as strings keys but now it can not.
+
+    Fix #26499.
+
+    *Rafael Mendonça França*, *Marcus Vieira*
+
+*   Calling `touch` on a model using optimistic locking will now leave the model
+    in a non-dirty state with no attribute changes.
+
+    Fixes #26496.
+
+    *Jakob Skjerning*
+
+*   Using a mysql2 connection after it fails to reconnect will now have an error message
+    saying the connection is closed rather than an undefined method error message.
+
+    *Dylan Thacker-Smith*
+
+*   PostgreSQL array columns will now respect the encoding of strings contained
+    in the array.
+
+    Fixes #26326.
+
+    *Sean Griffin*
+
+*   Inverse association instances will now be set before `after_find` or
+    `after_initialize` callbacks are run.
+
+    Fixes #26320.
+
+    *Sean Griffin*
+
+*   Remove unnecessarily association load when a `belongs_to` association has already been
+    loaded then the foreign key is changed directly and the record saved.
+
+    *James Coleman*
+
+*   Remove standardized column types/arguments spaces in schema dump.
+
+    *Tim Petricola*
+
+*   Avoid loading records from database when they are already loaded using
+    the `pluck` method on a collection.
+
+    Fixes #25921.
+
+    *Ryuta Kamizono*
+
+*   Remove text default treated as an empty string in non-strict mode for
+    consistency with other types.
+
+    Strict mode controls how MySQL handles invalid or missing values in
+    data-change statements such as INSERT or UPDATE. If strict mode is not
+    in effect, MySQL inserts adjusted values for invalid or missing values
+    and produces warnings.
+
+        def test_mysql_not_null_defaults_non_strict
+          using_strict(false) do
+            with_mysql_not_null_table do |klass|
+              record = klass.new
+              assert_nil record.non_null_integer
+              assert_nil record.non_null_string
+              assert_nil record.non_null_text
+              assert_nil record.non_null_blob
+
+              record.save!
+              record.reload
+
+              assert_equal 0,  record.non_null_integer
+              assert_equal "", record.non_null_string
+              assert_equal "", record.non_null_text
+              assert_equal "", record.non_null_blob
+            end
+          end
+        end
+
+    https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sql-mode-strict
+
+    *Ryuta Kamizono*
+
+*   Sqlite3 migrations to add a column to an existing table can now be
+    successfully rolled back when the column was given and invalid column
+    type.
+
+    Fixes #26087.
+
+    *Travis O'Neill*
+
+*   Deprecate `sanitize_conditions`. Use `sanitize_sql` instead.
+
+    *Ryuta Kamizono*
+
+*   Doing count on relations that contain LEFT OUTER JOIN Arel node no longer
+    force a DISTINCT. This solves issues when using count after a left_joins.
+
+    *Maxime Handfield Lapointe*
+
+*   RecordNotFound raised by association.find exposes `id`, `primary_key` and
+    `model` methods to be consistent with RecordNotFound raised by Record.find.
+
+    *Michel Pigassou*
+
 *   Hashes can once again be passed to setters of `composed_of`, if all of the
     mapping methods are methods implemented on `Hash`.
 
@@ -10,7 +445,7 @@
     *Takeshi Akima*
 
 *   Virtual attributes will no longer raise when read on models loaded from the
-    database
+    database.
 
     *Sean Griffin*
 
@@ -47,8 +482,8 @@
     *Xavier Noria*
 
 *   Using `group` with an attribute that has a custom type will properly cast
-    the hash keys after calling a calculation method like `count`. 
-    
+    the hash keys after calling a calculation method like `count`.
+
     Fixes #25595.
 
     *Sean Griffin*
@@ -83,7 +518,7 @@
     *Sean Griffin*
 
 *   Ensure hashes can be assigned to attributes created using `composed_of`.
-    
+
     Fixes #25210.
 
     *Sean Griffin*