Currently, I am working on a website using Ruby on Rails, the website has many small applications for example full calendar, chat session, user verification etc. I created a new application recently called Todo list which acts as a reminder very simple. It currently has its own page
"cannot load such file -- todo_lists"
"Missing templates ....."
You can create an ERB partial inside
layouts/_sidebar.html.erb and then in your
application.html.erb you render the partial with:
<%= render 'layouts/sidebar' %>
This will make it appear in all the application (assuming you have only one main layout)