method

changed

v5.2.3 - Show latest stable - Class: ActiveModel::Dirty

changed()

public

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 170
    def changed
      changed_attributes.keys
    end