instance method `changed`

Ruby on Rails 6.0.6

Since v3.0.20

Compare with:

changed()

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

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

Source

# File activemodel/lib/active_model/dirty.rb, line 164
    def changed
      mutations_from_database.changed_attribute_names
    end

Defined in activemodel/lib/active_model/dirty.rb line 164 · View on GitHub · Improve this page · Find usages on GitHub

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