Question

I have a Ruby on Rails website.

class DefinitionsController < ApplicationController
   caches_page :index
   def index
     responds_to do |format|
       format.json { render json: @something}
     end
   end
end

When I hit myapp.host.com/definitions.json I get my json data.
However when I call a function that uses expire_page :action => :index I won’t get a fresh update of that data, it keeps getting serving the old json file from the public dir. Another url of the website that also gets expired, but is a normal page, does come up fresh then.

I use Rails 3, hosting using Nginx and Passenger. When I run it using rails server it does work ok, so it must be something with Nginx or Passenger.

Is there something special I need to do, like call format => :json on the expire call?

Answer 1

I believe the problem is that you haven’t told expire_page the format of the cached content, so it assumes html. Finding no cached html content, it simply does nothing.

Try expire_page :action => :index, :format => 'json'.