method
changed_attributes
v4.2.9 -
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Class: ActiveRecord::AttributeMethods::Dirty
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changed_attributes()
public
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# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 57 def changed_attributes # This should only be set by methods which will call changed_attributes # multiple times when it is known that the computed value cannot change. if defined?(@cached_changed_attributes) @cached_changed_attributes else super.reverse_merge(attributes_changed_in_place).freeze end end