method
increment
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Class: ActiveRecord::Base
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= private
= protected
increment(attribute, by = 1)
public
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.
Show source
# File activerecord/lib/active_record/base.rb, line 2275 def increment(attribute, by = 1) self[attribute] ||= 0 self[attribute] += by self end