Method: Mongoid::Dirty::InstanceMethods#previous_changes

Defined in:

lib/mongoid/dirty.rb

#previous_changes ⇒ Object

Gets all the modifications that have happened to the object before the object was saved.

Example:

person = Person.new(:title => "Sir")
person.title = "Madam"
person.save!
person.previous_changes # returns { "title" => [ "Sir", "Madam" ] }

Returns:

A Hash of changes before save.

# File 'lib/mongoid/dirty.rb', line 141

def previous_changes
  @previous_modifications
end