Notes posted by hosh

Not quite opposite of new_record?

new_record? will not check if the record has been destroyed

Not quite opposite of persisted?

persisted? will also check if the record has not been destroyed

Using Arel

You can also use Arel.

For example:

class ArticlePage < ActiveRecord::Base
  belongs_to :article
  scope :published, -> { where.not(published_at: nil) }
  scope :all_ready, -> { select("every(workflow_state = 'ready') AS is_ready") }
end

class Article < ActiveRecord::Base
  has_many :article_pages
  def all_ready?
    ActiveRecord::Base.select_values(article_pages.all_ready,published) = 't'
  end
end