To make a long question short: I'm fairly new to caching in Rails.
What's the best way to cache stuff that is used in the layout without
caching the entire action/view?
Lets say I have the following in my Application controller to set some
variables that are used in my layout:
before_filter :get_sidebar_items
def get_sidebar_items
@menu_items = MenuItem.all
@archives = Post.all_grouped_by_month
end
I can easily cache the display of the menu items in
application.html.erb using a fragment:
<% cache(:menu_items) do %>
<% for i in @menu_items %>
<%= i.name %>
<% end %>
<% end %>
Problem is, that doesn't cache the database query. Is there a nifty
way to cache some global stuff like this? As far as I can tell, the
Caching Guide doesn't touch on this much.
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