This error only happens when 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.

ActiveJob: delegate deserialization to the job class

encapsulate env in the request so that we can eventually move away from
the env hash

this will help decouple us from using the rack env hash

Load a has_one target for a new record if possible

Flatten the call stacks ActiveSupport::Callbacks produces, fix #18011.

PostgreSQL, Fix change detection caused by superfluous bytea unescaping

Fixes simple missprint in docs for #cyle in text_helper [ci skip]

Fix comment typo in debugger.rb [ci skip]

RoutingAssertions. [ci skip]

after views. [ci skip]

 Update CHANGELOG entry for #18070 [ci skip]

functional testing section and implement :show, :destroy, and :update tests.

[ci skip]

 - Improved wording of CHANGELOG entry for https://github.com/arthurnn/rails/commit/5acd24bbeae0e9e5e81e87b5929e17f35527b2ea.

Ensures that primary_key method will return nil when multi-pk

in the Action Dispatch Integration module. [ci skip]

When table has a composite primary key, the `primary_key` method for
sqlite3 and postgresql was only returning the first field of the key.

Ensures that it will return nil instead, as AR dont support composite pks.

Use more semantic method to authenticate password in SecurePassword

 Fix description for application_name method - change simple to simply [ci skip]

 [ci skip]

 Better docs for AV::RecordIdentifier [ci skip]

Remove single space response body for head request

- The single space response was added due to a bug in safari
  in https://github.com/rails/rails/commit/cb0f8fda9652c4d24d04693bdb82cecd3b067e5c
  and
  https://github.com/rails/rails/commit/807df4fcf021fc4d15972aa1c17ba7398d43ab0d.
- This was removed from the `render nothing: true` in
  https://github.com/rails/rails/pull/14883.
- Removing it from response of :head also. As :head is more obvious
  alternative to call `render nothing:
  true`(http://guides.rubyonrails.org/layouts_and_rendering.html#using-head-to-build-header-only-responses),
  removing it from head method also.
- Closes #18253.

Fix form_for to work with objects that implement to_model

Closes #7247.

Conflicts:
	activerecord/CHANGELOG.md
	activerecord/test/models/owner.rb

Given the following templates:

    mailer/demo.html.erb
    mailer/demo.en.html.erb
    mailer/demo.pt.html.erb

Before this change for a locale that doesn't have its related file
the `mailer/demo.html.erb` will
be rendered even if `en` is the default locale.

Now `mailer/demo.en.html.erb` has precedence over the file without
 locale.

Also, it is possible to give a fallback.

    mailer/demo.pt.html.erb
    mailer/demo.pt-BR.html.erb

So if the locale is `pt-PT`, `mailer/demo.pt.html.erb` will be
 rendered given the right I18n fallback configuration.

Fixes #11884.

It makes more sense here, rather than after explaining all of the testing
facilities of Rails. [ci skip]

Previously, if you tried to use form_for with a presenter object
that implements to_model, it would crash in
action_dispatch/routing/polymorphic_routes.rb when asking the presenter
whether it is .persisted?

Now, we always ask .persisted? of the to_model object instead.

This seems to been an issue since 1606fc9dSigned-off-by: NEugenia Dellapenna <eugenia.dellapenna@gmail.com>