method

id?

rails latest stable - Class: ActiveRecord::AttributeMethods::PrimaryKey

id?()

public

Queries the primary key column’s value. If the primary key is composite, all primary key column values must be queryable.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 45
      def id?
        if self.class.composite_primary_key?
          @primary_key.all? { |col| _query_attribute(col) }
        else
          _query_attribute(@primary_key)
        end
      end

id?

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