How to use will_paginate with model caching in rails?

There is a region ( scope :short_listed, -> ....

) in my model . To list all the elements on the index page, I use this code:

@posts = Post.cached_short_listed.paginate(:page => params[:page])

      

        
        
        
      

    

post.rb

  def self.cached_short_listed
    Rails.cache.fetch([name, "short_listed"], expires_in: 5.minutes) do
      short_listed.to_a
    end
  end

      

        
        
        
      

    

and i have this error

undefined method `paginate' for #<Array:

      

        
        
        
      

    

if i uninstall .paginate(:page => params[:page])

and <%= will_paginate....%>

everything works fine.

How to make will_paginate work with model caching.