instance method
one?
Ruby on Rails 6.1.7.10
Since v5.2.8.1Signature
one?()Returns true if there is exactly one record.
Source
# File activerecord/lib/active_record/relation.rb, line 282
def one?
return super if block_given?
limit_value ? records.one? : size == 1
end
Defined in activerecord/lib/active_record/relation.rb line 282
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Defined in ActiveRecord::Relation