instance method `decrement!`

Ruby on Rails 8.1.2

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

decrement!(attribute, by = 1, touch: nil)

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. Supports the touch option from update_counters, see that for more. Returns self.

Parameters

attribute req
by opt = 1
touch key = nil

Source

# File activerecord/lib/active_record/persistence.rb, line 696
    def decrement!(attribute, by = 1, touch: nil)
      increment!(attribute, -by, touch: touch)
    end

Defined in activerecord/lib/active_record/persistence.rb line 696 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Persistence

Signature

Parameters