instance method `hash`

Ruby on Rails 8.0.4

Since v4.0.13

Available in: 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:

hash()

Delegates to id in order to allow two records of the same type and id to work with something like:

[ Person.find(1), Person.find(2), Person.find(3) ] & [ Person.find(1), Person.find(4) ] # => [ Person.find(1) ]

Source

# File activerecord/lib/active_record/core.rb, line 641
    def hash
      id = self.id

      if primary_key_values_present?
        self.class.hash ^ id.hash
      else
        super
      end
    end

Defined in activerecord/lib/active_record/core.rb line 641 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Core

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