Instead of using a single `notify_observers` call for every callback type,
each observer now registers a unique callback for itself. Example:

  before_save :_notify_user_observer_for_before_save

  def _notify_user_observer_for_before_save
    observer.update(:before_save, self)
  end

Benefit: "before" callbacks halt when `observer.update` returns false.
This way, ActiveRecord observers can prevent records from saving.

[#4087 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

`Observable#notify_observers` from Ruby always returns false (which halts ActiveRecord
callback chains) and has extra features (like `changed`) that were never used.
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Benefits: test able to run independently, subclassing instead of changing the original Comment model
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NXavier Noria <fxn@hashref.com>

Revert "Add test case which check content type when rendering rjs" partial in html template" rendering rjs in html doesn't make sense, it would just output javascript into the template, no script tag

This reverts commit dc251389.

Signed-off-by: NXavier Noria <fxn@hashref.com>

Observers observing models with scopes defined will require the connection to be established.

Revert "logger added to the deprecated config accessor" we need a major refactor to get this working

This reverts commit 68f4e046.

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

[#4398 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

adds missing requires for arel and i18n, prevents Arel constant from being autoloaded (which was still seen), though it probably hides an issue related to dependencies

Ensure not to load the entire association when bulk updating existing records using nested attributes

Changed translate helper so that it doesn’t mark every translation as safe HTML. Only keys with a "_html" suffix and keys named "html" are considered to be safe HTML. All other translations are left untouched.
Signed-off-by: NDavid Heinemeier Hansson <david@loudthinking.com>

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Allow a Rails application to be initialized from any directory and not just from inside it (ht: Andre Arko).