instance method to_ary

Ruby on Rails 7.1.6

Since v5.2.8.1 Private

Available in: 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

Signature

to_ary()

+Array#flatten+ will call #to_ary (recursively) on each of the elements of the array, and then rescues from the possible NoMethodError. If those elements are ActiveRecord::Base‘s, then this triggers the various method_missing’s that we have, which significantly impacts upon performance.

So we can avoid the method_missing hit by explicitly defining #to_ary as nil here.

See also tenderlovemaking.com/2011/06/28/til-its-ok-to-return-nil-from-to_ary.html

Source
# File activerecord/lib/active_record/core.rb, line 773
      def to_ary
        nil
      end

Defined in activerecord/lib/active_record/core.rb line 773 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Core

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