instance method
decrement!
Ruby on Rails 5.0.7.2
Since v3.0.20Signature
decrement!(attribute, by = 1)Wrapper around #decrement that writes the update to the database. Only attribute is updated; the record itself is not saved. This means that any other modified attributes will still be dirty. Validations and callbacks are skipped. Returns self.
Parameters
-
attributereq -
byopt = 1
Source
# File activerecord/lib/active_record/persistence.rb, line 364
def decrement!(attribute, by = 1)
increment!(attribute, -by)
end
Defined in activerecord/lib/active_record/persistence.rb line 364
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Defined in ActiveRecord::Persistence