ruby-on-rails - 使用link_to时出现奇怪的Rails4错误

Question

这行代码:

<%=link_to('Click for video.', image_path("create_institution.gif"), :target => "_blank")%>

抛出此错误:

Couldn't find Image with 'id'=create_institution

Request parameters  
{"action"=>"show", "controller"=>"images", "id"=>"create_institution", "format"=>"gif"}

这是我的路线问题还是其他问题？ "create_institution.gif"在 /assets/images中。我有一个“图像”模型，但在其他地方使用图像没有问题。

my routes.rb的Pastebin

Answer 1

在您的应用程序中，您将image作为资源，这就是为什么image_path解析为images#show的原因

根据image_path的文档，

If you have images as application resources this method may conflict with their named routes. The alias path_to_image is provided to avoid that. Rails uses the alias internally, and plugin authors are encouraged to do so.

因此，您可以使用 path_to_image解决此问题。

<%=link_to('Click for video.', path_to_image("create_institution.gif"), :target => "_blank")%>

希望这可以帮助!