Rails设计用户是否未登录

Question

I am trying to check if the user session is not active

<% if user_signed_in?! %>
        <div class="homeActions">
          <%= link_to "Become a Host", new_host_path, class: "btn btn-lg btn-success" %>
        </div>
        <% end %>

Answer 1

You can use

<% if !user_signed_in? %>

or

<% if not user_signed_in? %>

or

<% unless user_signed_in? %>

! and not negate the preceding boolean expression, while unless is the exact opposite of if .