instance method `new`

Ruby on Rails 4.2.9

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:

new(*args, &block)

Determines if one of the attributes passed in is the inheritance column, and if the inheritance column is attr accessible, it initializes an instance of the given subclass instead of the base class.

Parameters

args rest
block block

Source

# File activerecord/lib/active_record/inheritance.rb, line 48
      def new(*args, &block)
        if abstract_class? || self == Base
          raise NotImplementedError, "#{self} is an abstract class and cannot be instantiated."
        end

        attrs = args.first
        if subclass_from_attributes?(attrs)
          subclass = subclass_from_attributes(attrs)
        end

        if subclass
          subclass.new(*args, &block)
        else
          super
        end
      end

Defined in activerecord/lib/active_record/inheritance.rb line 48 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Inheritance::ClassMethods

Signature

Parameters