我的文件存储在app/assets/images/subdirectory/image.png and app/assets/images/subdirectory/image_full.png.

In my app/views/home.html.erb:

<%= link_to (image_tag("subdirectory/image.png"), asset_path("subdirectory/image_full.png")) %>

我也尝试过：

<%= link_to (image_tag("subdirectory/image.png"), asset_path("subdirectory/image_full.png", image)) %>
<%= link_to (image_tag("subdirectory/image.png"), image_path("subdirectory/image.png", image)) %>

通过文档找不到太多内容：http://guides.rubyonrails.org/asset_pipeline.html http://guides.rubyonrails.org/asset_pipeline.html

但当我尝试加载视图时，它完全崩溃了我的应用程序！

ANSWER

如果还有括号，则 link_to 之后不应该有空格：

<%= link_to(image_tag("subdirectory/image.png"), image_path("subdirectory/image_full.png", image)) %>

<%= link_to image_path("subdirectory/image_full.png") do %>
  <%= image_tag "subdirectory/image.png" %>
<% end %>