if else rails 语法错误，意外的“;”，期待“：”

Question

我有这个代码：

<% if @lead? -%>
    <h3>Current status of your car is <%= @lead.status %> </h3>
    <%=image_tag("stat/" + @lead.status + ".jpg", :class => "status_image", alt: "status")%>
<% else -%>
    <h3> No records found.</h3>
<% end -%>

我想做的是检查我的@lead 是否存在并显示 lead 和一些图片，或者说在 db 中找不到这样的记录。但它给了我一个错误：

/home/jonstark/rails_projects/car_main/app/views/static_pages/check_lead_car_status.html.erb:4: syntax error, unexpected ';', expecting ':' ...urrent status of your car is ';@output_buffer.append=( @lead...

如果我去掉 if else 只留下这个：

<h3>Current status of your car is <%= @lead.status %> </h3><br/><br/>
        <%=image_tag("stat/" + @lead.status + ".jpg", :class => "status_image", alt: "status")%>

错误消失。我该如何解决这个问题？

Answer 1

只需使用这个：

<% if @lead %>
    <h3>Current status of your car is <%= @lead.status %> </h3>
    <%=image_tag("stat/" + @lead.status + ".jpg", :class => "status_image", alt: "status")%>
<% else %>
    <h3> No records found.</h3>
<% end %>

这应该可以解决您的问题。

if else rails 语法错误，意外的“;”，期待“：”

if else rails syntax error, unexpected ';', expecting ':'

ruby

ruby-on-rails

ruby-on-rails-3.2

ruby-on-rails-4