Method: ActiveRecord::Reflection::ThroughReflection#klass

Defined in:

activerecord/lib/active_record/reflection.rb

#klass ⇒ Object

# File 'activerecord/lib/active_record/reflection.rb', line 766

def klass
  @klass ||= delegate_reflection.compute_class(class_name).tap do |klass|
    if !parent_reflection.is_a?(HasAndBelongsToManyReflection) &&
       !(klass.reflections.key?(options[:through].to_s) ||
         klass.reflections.key?(options[:through].to_s.pluralize)) &&
       active_record.type_for_attribute(active_record.primary_key).type != :integer
      raise NotImplementedError, <<~MSG.squish
        In order to correctly type cast #{active_record}.#{active_record.primary_key},
        #{klass} needs to define a :#{options[:through]} association.
      MSG
    end
  end
end