How to save and close a bootstrap modal?

Answer 1

I finally got this working with a hint from Ricardo Almeida:

<%=form_with id: :friend_email_form, url: friend_emails_create_path do |f|%>

                      # form fields entered here


    <%= f.submit "Send Email", class: 'btn btn-primary', "onclick":"submit_form();", "data-dismiss":"modal"%>