* Rewrite with Vanilla JS
* Confirmed with Chrome, Safari, Firefox

Preloading through polymorphic associations (still raises for typos on regular associations)

Add `touch_all` method to `ActiveRecord::Relation`

Create MissingExactTemplate exception with separate template

[ci skip] belongs_to in self join association needs optional: true, if it's over 5.0 ver of rails

[ci skip] Improve Rails::SourceAnnotationExtractor documentation

Allow `primary_key` argument to  `empty_insert_statement_value`

After renaming and deprecation of SourceAnnotationExtractor
documentation has been updated to reflect the new name Rails::SourceAnnotationExtractor

The previous documentation version listed only the default
registered extensions. This was misleading because if more extensions
get registered with
<tt>SourceAnnotationExtractor::Annotation.register_extensions</tt>,
they would be also taken into account. By saying that we consider
all registered extensions we document what happens in reality.

Fix typos related to ActionDispatch::Http::FilterParameters

Introduce ActionDispatch::DebugExceptions interceptors

to support Oracle database support identity data type

Oracle database does not support `INSERT .. DEFAULT VALUES`
then every insert statement needs at least one column name specified.

When `prefetch_primary_key?` returns `true` insert statement
always have the primary key name since the primary key value is selected
from the associated sequence. However, supporting identity data type
will make `prefetch_primary_key?` returns `false`
then no primary key column name added.
As a result, `empty_insert_statement_value` raises `NotImplementedError`

To address this error `empty_insert_statement_value` can take
one argument `primary_key` to generate insert statement like this.

`INSERT INTO "POSTS" ("ID") VALUES(DEFAULT)`

It needs arity change for the public method but no actual behavior changes for the bundled adapters.

Oracle enhanced adapter `empty_insert_statement_value` implementation will be like this:

```
def empty_insert_statement_value(primary_key)
  raise NotImplementedError unless primary_key
  "(#{quote_column_name(primary_key)}) VALUES(DEFAULT)"
end
```

[Raise NotImplementedError when using empty_insert_statement_value with Oracle](https://github.com/rails/rails/pull/28029)
[Add support for INSERT .. DEFAULT VALUES](https://community.oracle.com/ideas/13845)

2.6 warning: ambiguous first argument

Plugins interacting with the exceptions caught and displayed by
ActionDispatch::DebugExceptions currently have to monkey patch it to get
the much needed exception for their calculation.

With DebugExceptions.register_interceptor, plugin authors can hook into
DebugExceptions and process the exception, before being rendered. They
can store it into the request and process it on the way back of the
middleware chain execution or act on it straight in the interceptor.

The interceptors can be play blocks, procs, lambdas or any object that
responds to `#call`.

Fixes two documentation typos found at ActionDispatch::Http::FilterParameters

Fix name of the test added by #32613

As of now,  `HTMLElement.nonce` seems to work only in Chrome.
So, it should not be used now.
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/nonce#Browser_compatibility

Fixes #32577.

guides/testing: Pluralize controller and helper class names.

Return back "/" to the end of RAILS_GEM_ROOT

Rails-ujs: Info about stoppable events

This reverts commit 78ff47f3, reversing
changes made to daffe033.

That changelog entry should only be on 5-2-stable

Create a .ruby-version compatible with MRI/JRuby by default

The extracted method is used for `CollectionCacheAssociationLoading`,
still not public API.

[ci skip]

Suppress `warning: ambiguous first argument`

Add missing changelog entry

[ci skip]

https://github.com/rails/rails/pull/32593 was backported to
`5-2-stable` but since 5.2.0 is released the changelog entry should
be in Rails 6.0.0 too.

[ci skip]

- The "/" was removed in 40bdbce1 during
refactoring. It may cause regression since looks like was added
intentionaly because it is possible that a name of any another gem
can start with /rails/, so slash was added to ensure that it is "rails"
gem.
I would like to backport this to `5-2-stable` too.

- Use `__dir__` instead of `__FILE__`. Follow up #29176.

Fix relation merging with skip_query_cache!

Allow rubocop check more files

This commit fix pattern of filenames for `CustomCops/AssertNot` and
`CustomCops/RefuteNot`.

rubocop should check every file under `test/`.

Related to #32441, #32605

`#ordinal` and `#ordinalize` now support I18n

Improve css in guide

Improve redundancy in line tasks