404 when displaying background image in CSS with rails 3.2

问题

I manually added assets/images directory in a rails 3.2 app and added the image background.png . When referring to the image from css

background: url("assets/background.png") no-repeat;

I am getting a 404 , however assets/stylesheets and assets/javascripts are showing up.

**UPDATE

it appears as if I revert back to explicitly calling the stylesheet ie

<%=stylesheet_link_tag "home.css"%> 

instead of

<%=stylesheet_link_tag "application" %>

The background image reders correctly

回答1:

That url is relative to where the style sheet is. You probably want either url(../assets/background.png) to go up a level from your style sheet or url(/assets/background.png) to go from the root.

回答2:

Use:

url(<%= asset_path 'background.png' %>)

and you'll be fine.

来源：https://stackoverflow.com/questions/10093077/404-when-displaying-background-image-in-css-with-rails-3-2