Method: ActiveModel::Dirty#changed

Defined in:

activemodel/lib/active_model/dirty.rb

#changed ⇒ Object

Returns an array with the name of the attributes with unsaved changes.

person.changed # => []
person.name = 'bob'
person.changed # => ["name"]

# File 'activemodel/lib/active_model/dirty.rb', line 295

def changed
  mutations_from_database.changed_attribute_names
end