Module: Polyamorous::JoinDependencyExtensions

Defined in:

lib/brick.rb

Instance Method Summary

• #build(associations, base_klass, root = nil, path = '') ⇒ Object

Instance Method Details

#build(associations, base_klass, root = nil, path = '') ⇒ Object

# File 'lib/brick.rb', line 2009

def build(associations, base_klass, root = nil, path = '')
  root ||= associations
  # puts associations.map(&:first)

  associations.map do |name, right|
    link_path = path.blank? ? name.to_s : path + ".#{name}"
    ja = if name.is_a? ::Polyamorous::Join
           reflection = find_reflection base_klass, name.name
           reflection.check_validity!
           reflection.check_eager_loadable!

           klass = if reflection.polymorphic?
                     name.klass || base_klass
                   else
                     reflection.klass
                   end
           ::ActiveRecord::Associations::JoinDependency::JoinAssociation.new(
             reflection, build(right, klass, root, link_path), name.klass, name.type
           )
         else
           reflection = find_reflection base_klass, name
           reflection.check_validity!
           reflection.check_eager_loadable!

           if reflection.polymorphic?
             raise ActiveRecord::EagerLoadPolymorphicError.new(reflection)
           end
           ::ActiveRecord::Associations::JoinDependency::JoinAssociation.new(
             reflection, build(right, reflection.klass, root, link_path)
           )
         end
    ja.instance_variable_set(:@link_path, link_path) # Make note on the JoinAssociation of its AR path
    ja.instance_variable_set(:@assocs, root)
    ja
  end
end