12月10日 render( locals:{...}) 传入本地变量。

Jdstor第一部分后台设计，4-4上传图片。

3.4 Using Partials--3.4.4 Passing Local Variables

You can also pass local variables into partials, making them even more powerful and flexible.

show.html.erb:

<%= render partial:"image", locals:{product:@product} %>

_image.html.erb:

<% if product.image.present? %>

<%= image_tag(product.image.thumb.url, class:"thumbnail")%>

<% else %>

<%= image_tag("http://placehold.it/200x200&text=No Pic",class:"thumbnail")%>

<% end %>

http://upload.cnblogs.com/ImageUploader/Upload?host=www.cnblogs.com&editor=2

1. 我在admin/index.html中，想使用partial上传图片。但发生?。