instance method `subclass_from_attributes`

Ruby on Rails 4.2.9

Since v4.0.13 Private

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:

subclass_from_attributes(attrs)

No documentation comment.

Parameters

attrs req

Source

# File activerecord/lib/active_record/inheritance.rb, line 208
      def subclass_from_attributes(attrs)
        subclass_name = attrs.with_indifferent_access[inheritance_column]

        if subclass_name.present? && subclass_name != self.name
          subclass = subclass_name.safe_constantize

          unless descendants.include?(subclass)
            raise ActiveRecord::SubclassNotFound.new("Invalid single-table inheritance type: #{subclass_name} is not a subclass of #{name}")
          end

          subclass
        end
      end

Defined in activerecord/lib/active_record/inheritance.rb line 208 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Inheritance::ClassMethods

Signature

Parameters