Question

所以我有这个ERB部分，根据传递的局部参数呈现不同的部分：

<% unless current_user?(@user) do %>
    <div id="relation">
        <% if current_user.friends?(@user) %>
            <%= render('edit-relation', locals: { action: "rm-friend" })%>
        <% elsif current_user.req_friends?(@user) %>
            Friend Request Pending...
        <% elsif current_user.pend_friends?(@user) %>
            <%= render('edit-relation', locals: { action: "add-friend" })%>
            <%= render('edit-relation', locals: { action: "rej-friend" })%>
        <% else %>
            <%= render('edit-relation', locals: { action: "req-friend" })%>
        <% end %>
    </div>
<% end %>

抛出语法错误：

Showing C:/Users/HP/Ubuntu One/A2 Computing Project/Software Development/Client/app/views/layouts/_relation.html.erb where line #15 raised:

C:/Users/HP/Ubuntu One/A2 Computing Project/Software Development/Client/app/views/layouts/_relation.html.erb:15: syntax error, unexpected keyword_ensure, expecting keyword_end
C:/Users/HP/Ubuntu One/A2 Computing Project/Software Development/Client/app/views/layouts/_relation.html.erb:17: syntax error, unexpected end-of-input, expecting keyword_end

没有15号线或17号线。有人看到出了什么问题吗？

Answer 1

else if current_user

你不能在红宝石中这样做。有一个特殊的关键字elsif。

if a
  # ...
elsif b
  # ...
elsif c
  # ...
else
  # ...
end

另外

<% unless current_user?(@user) do %>

在这里删除do。

Answer 2

修正了它：结果你不能像这样使用unless，而是将它改为if语句而不是

用户中的语法错误#show with If语句

2 个答案:

另外