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I have the following situation in my rails project

application.html.erb:

...
<%= render :partial => 'layouts/sidebar' %>
<%= yield %>
...

_sidebar.html.erb:

<% @groups.each do |group| %>
  <li><%= link_to group.name, "#" %></li>
<% end %>

Sidebar consists of a list of groups which doesn't change often. That's why i don't want to query the list in DB every time I go to another page in content part (yield). Is there a way how can i preserve the list throughout several pages? I KNOW about the sessions and caches, but maybe there is a better solution.

Thanks

Improve this question
7
  • just noticed, you can keep it static then. if its not growing sidebar ! Some case you can go for redis :) Commented Jun 20, 2017 at 17:01
  • Possible duplicate of How do I store an instance variable across multiple actions in a controller? Commented Jun 20, 2017 at 17:11
  • @AtulKhanduri I'm not interested about saving it on backend. I wrote about frontend. Commented Jun 20, 2017 at 17:25
  • Okay. So, I guess, you can store the groups in a constant file and use that constant variable in the sidebar. Commented Jun 20, 2017 at 17:29
  • The groups are not constant.. user can add or remove groups, but it doesnt happen often. Commented Jun 20, 2017 at 17:36
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