Rails 4 scope with argument

Question

Upgrading Rails 3.2. to Rails 4. I have the following scope:

# Rails 3.2
scope :by_post_status, lambda { |post_status| where(\"post_status = ?\", post_status         


        

Answer 1

Very simple, just same lambda without arguments:

scope :by_post_status, -> (post_status) { where('post_status = ?', post_status) }
scope :published, -> { by_post_status("public") }
scope :draft, -> { by_post_status("draft") }

or more shorted:

%i[published draft].each do |type|
  scope type, -> { by_post_status(type.to_s) }
end