Rails helper code that generates a bootstrap font icon, which links to the provided path.

button_link.rb

def button_link(icon, path, method = :get, remote = false, button_class_properties = [])

  button_class_properties.prepend("btn")
  button_class_properties.uniq!

  content_tag :a, href: path, method: method, remote: remote do
    content_tag :button, class: button_class_properties.join(" ") do
      content_tag(:i, "", class: icon)
    end
  end
		
end

Place the code listed above in your application_helper.rb, then you can use the following call in your views:

<%= button_link "icon-trash", event_path(e) %>

or

<%= button_link "icon-trash", event_path(e), :delete, false, ["btn-danger", "btn-mini"] %>