1 files changed, 156 insertions, 1 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 6494c7374e..8980a1d874 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,158 @@
+*   Clear query cache on rollback.
+
+    *Florian Weingarten*
+
+*   Fixed setting of foreign_key for through associations while building of new record.
+
+    Fixes #12698.
+
+    *Ivan Antropov*
+
+*   Improve a dump of the primary key support. If it is not a default primary key,
+    correctly dump the type and options.
+
+    Fixes #14169, #16599.
+
+    *Ryuta Kamizono*
+
+*   Format the datetime string according to the precision of the datetime field.
+
+    Incompatible to rounding behavior between MySQL 5.6 and earlier.
+
+    In 5.5, when you insert `2014-08-17 12:30:00.999999` the fractional part
+    is ignored. In 5.6, it's rounded to `2014-08-17 12:30:01`:
+
+    http://bugs.mysql.com/bug.php?id=68760
+
+    *Ryuta Kamizono*
+
+*   Allow precision option for MySQL datetimes.
+
+    *Ryuta Kamizono*
+
+*   Fixed automatic inverse_of for models nested in module.
+
+    *Andrew McCloud*
+
+*   Change `ActiveRecord::Relation#update` behavior so that it can
+    be called without passing ids of the records to be updated.
+
+    This change allows to update multiple records returned by
+    `ActiveRecord::Relation` with callbacks and validations.
+
+        # Before
+        # ArgumentError: wrong number of arguments (1 for 2)
+        Comment.where(group: 'expert').update(body: "Group of Rails Experts")
+
+        # After
+        # Comments with group expert updated with body "Group of Rails Experts"
+        Comment.where(group: 'expert').update(body: "Group of Rails Experts")
+
+    *Prathamesh Sonpatki*
+
+*   Fix `reaping_frequency` option when the value is a string.
+
+    This usually happens when it is configured using `DATABASE_URL`.
+
+    *korbin*
+
+*   Fix error message when trying to create an associated record and the foreign
+    key is missing.
+
+    Before this fix the following exception was being raised:
+
+        NoMethodError: undefined method `val' for #<Arel::Nodes::BindParam:0x007fc64d19c218>
+
+    Now the message is:
+
+        ActiveRecord::UnknownAttributeError: unknown attribute 'foreign_key' for Model.
+
+    *Rafael Mendonça França*
+
+*   When a table has a composite primary key, the `primary_key` method for
+    SQLite3 and PostgreSQL adapters was only returning the first field of the key.
+    Ensures that it will return nil instead, as Active Record doesn't support
+    composite primary keys.
+
+    Fixes #18070.
+
+    *arthurnn*
+
+*   `validates_size_of` / `validates_length_of` do not count records,
+    which are `marked_for_destruction?`.
+
+    Fixes #7247.
+
+    *Yves Senn*
+
+*   Ensure `first!` and friends work on loaded associations.
+
+    Fixes #18237.
+
+    *Sean Griffin*
+
+*   `eager_load` preserves readonly flag for associations.
+
+    Closes #15853.
+
+    *Takashi Kokubun*
+
+*   Provide `:touch` option to `save()` to accommodate saving without updating
+    timestamps.
+
+    Fixes #18202.
+
+    *Dan Olson*
+
+*   Provide a more helpful error message when an unsupported class is passed to
+    `serialize`.
+
+    Fixes #18224.
+
+    *Sean Griffin*
+
+*   Add bigint primary key support for MySQL.
+
+    Example:
+
+        create_table :foos, id: :bigint do |t|
+        end
+
+    *Ryuta Kamizono*
+
+*   Support for any type primary key.
+
+    Fixes #14194.
+
+    *Ryuta Kamizono*
+
+*   Dump the default `nil` for PostgreSQL UUID primary key.
+
+    *Ryuta Kamizono*
+
+*   Add a `:foreign_key` option to `references` and associated migration
+    methods. The model and migration generators now use this option, rather than
+    the `add_foreign_key` form.
+
+    *Sean Griffin*
+
+*   Don't raise when writing an attribute with an out-of-range datetime passed
+    by the user.
+
+    *Grey Baker*
+
+*   Replace deprecated `ActiveRecord::Tasks::DatabaseTasks#load_schema` with
+    `ActiveRecord::Tasks::DatabaseTasks#load_schema_for`.
+
+    *Yves Senn*
+
+*   Fixes bug with 'ActiveRecord::Type::Numeric' that causes negative values to
+    be marked as having changed when set to the same negative value.
+
+    Closes #18161.
+
+    *Daniel Fox*
+
 *   Introduce `force: :cascade` option for `create_table`. Using this option
     will recreate tables even if they have dependent objects (like foreign keys).
     `db/schema.rb` now uses `force: :cascade`. This makes it possible to
@@ -13,7 +168,7 @@
 
     *Yves Senn*
 
-*   Fix undesirable RangeError by Type::Integer. Add Type::UnsignedInteger.
+*   Fix undesirable RangeError by `Type::Integer`. Add `Type::UnsignedInteger`.
 
     *Ryuta Kamizono*