Model method in Rails controller

Question

I have a model called Visitor , which has the following method:

def online?
  !Redis.new.get("#{self.auth_token}").nil?
end

In my controller, I want to filter all the visitors that are currently online, something like this:

@organisation_vistors = Visitor.where(:organisation_id => session[:orga_id], :online => true ) 

Can someone help me with what is the best rails way to achieve this?

Answer 1

Supposing online? is merely a model method and not an attribute on the table, you cannot put that within your SQL request. Filter by that condition after the SQL.

@organisation_vistors =
  Visitor
  .where(organisation_id: session[:orga_id])
  .select(&:online?)