This actually runs a request through the system, using the actual
routing methods as we would use in production, then tests the
path_parameters set on the request object.  The `recognize_path` method
isn't actually used in production, so testing what it returns isn't
useful.

Now we can override how requests are dispatched in the routeset object

Improve Active Model Dirty API.

These methods may cause confusion with the `reset_changes` that
behaves differently
of them.

Also rename undo_changes to restore_changes to match this new set of
methods.

This method name is causing confusion with the `reset_#{attribute}`
methods. While `reset_name` set the value of the name attribute for the
previous value the `reset_changes` only discard the changes and previous
changes.

Add Rails::Application#config_for

This is a convenience for loading configuration for the current Rails
environment.

Conflicts:
	activerecord/CHANGELOG.md

Also updated the test case to reflect that

Closes #15936

Fixed JSON coder when loading NULL from DB

This reverts commit 6f3c64ee.

Conflicts:
	activerecord/CHANGELOG.md

If a counter_cache exists, use it for #empty?

Add ability to extend `rails server` command options parser

Log digest as :debug instead of :info

Fix empty host for an asset url when asset_host proc returns nil

Return an absolute instead of relative path from an asset url in the case of the `asset_host` proc returning nil

[ci skip] Fix grammar of eager loading for ActiveRecord::Associations

Refactor reflections from sub classes to delegates

Stash original path in `ShowExceptions` middleware

Address ORA-00972: identifier is too long when tested with Oracle

by using shorter attribute names.

`ActionDispatch::ShowExceptions` overwrites `PATH_INFO` with the status code
for the exception defined in `ExceptionWrapper`, so the path the user was
visiting when an exception occurred was not previously available to any custom
exceptions_app.

The original `PATH_INFO` is now stashed in
`env["action_dispatch.original_path"]`.

Dump PostgreSQL primary key with custom function as a default.

[ci skip] Improve documentation consistency for ActiveModel::Errors

*   Leave two blank lines between sections/packages for readibility.

*   Always indent bullet points with four spaces. This allows multi-paragraph
    points to align properly (see #16103), and it is the same as the format we
    already use in CHANGELOGs. Doing this consistently sets an easy precedent
    for future contributors to follow.

*   Always put the PR/commit link on its own line in the source. If the bullet
    point spans multiple paragraphs, put it on its own paragraph at the end.

[Godfrey Chan & Juanito Fatas]

[ci skip] Fix typos like `a html` to `an html` and 'an mail' to 'an email'.