Question

If you have a side table on your page with info from the database, and you want it to appear on several pages in your RoR app. How should this be done?
Let’s say you output this data in a view, called LeftTableView or something like that.

Now in the, “/products/” view you want to display this data, and you also want to display it on “/products/12” and also on “/friends/” and so on.

How do you render out this “partial” view and bind the database data using the original controller only? Or… is it “better” to collect the data again from each controller?

Answer 1

Assumed, if you want appear “category” on navigation from database, keep in application_controller.rb

def navcategory
    @navcategories = Category.all
end

on products_controller.rb and friends_controller.rb , you just call navcategory with before_filter

before_filter :navcategory

and on layout

<% @navcategories.each do |category| %> 
....
....
....
<% end %>