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increment

increment(attribute, by = 1)

Instance Public methods

Initializes attribute to zero if nil and adds the value passed as by (default is 1). The increment is performed directly on the underlying attribute, no setter is invoked. Only makes sense for number-based attributes. Returns self.

Links:

https://github.com/rails/rails/blob/abb92690ee7c3e447427963ad6000526908c1e53/activerecord/lib/active_record/persistence.rb#L291

doc_ruby_on_rails

2015-06-20 00:00:00

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