instance method `previous_changes`

Ruby on Rails 3.0.20

Since v3.0.20

Compare with:

previous_changes()

Map of attributes that were changed when the model was saved.

person.name # => 'bob'
person.name = 'robert'
person.save
person.previous_changes # => {'name' => ['bob, 'robert']}

Source

# File activemodel/lib/active_model/dirty.rb, line 126
    def previous_changes
      @previously_changed
    end

Defined in activemodel/lib/active_model/dirty.rb line 126 · View on GitHub · Improve this page · Find usages on GitHub

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