how to use a controller variable in my layout

I am trying to use a variable开发者_JS百科 of my controller in my layout.

For example:

@posts = Post.all.count

In my layout I want to list the Post count, even when I open the index view of another controller.

Many thanks!!!

Two solutions:

• Use <%= Post.all.count %> in your layout.

• Add a before_filter in your ApplicationController that loads the variable.

  class ApplicationController < ActionController::Base
    before_filter :load_layout_variables
  
  protected
    def load_layout_variables
      @posts = Post.all.count
    end
  end