我一直试图通过传递代码来引用我的scss文件中的图像：
background-image: asset-url("bg.jpg", image) no-repeat center center fixed;
我也试过了：
background-image: image-url("bg.jpg") no-repeat center center fixed;
然而，当我运行rails时，我收到以下错误：
ActionController::RoutingError (No route matches [GET] "/assets/images/bg.jpg"):
是的，我确定我的图片在app / assets / images上。
我如何设法解决这个问题？
查看文件（从启动引导程序下载）：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<title>Stylish Portfolio Template for Bootstrap</title>
<!-- Bootstrap core CSS -->
<%= stylesheet_link_tag "bootstrap", "custom" %>
</head>
<body>
<!-- Side Menu -->
<a id="menu-toggle" href="#" class="btn btn-primary btn-lg toggle"><i class="fa fa-bars"></i></a>
<div id="sidebar-wrapper">
<ul class="sidebar-nav">
<a id="menu-close" href="#" class="btn btn-default btn-lg pull-right toggle"><i class="fa fa-times"></i></a>
<li class="sidebar-brand"><a href="http://startbootstrap.com">Start Bootstrap</a>
</li>
<li><a href="#top">Home</a>
</li>
<li><a href="#about">About</a>
</li>
<li><a href="#services">Services</a>
</li>
<li><a href="#portfolio">Portfolio</a>
</li>
<li><a href="#contact">Contact</a>
</li>
</ul>
</div>
<!-- /Side Menu -->
<!-- Full Page Image Header Area -->
<div id="top" class="header">
<div class="vert-text">
<h1>Start Bootstrap</h1>
<h3>
<em>We</em> Build Great Templates,
<em>You</em> Make Them Better</h3>
<a href="#about" class="btn btn-default btn-lg">Find Out More</a>
</div>
</div>
<!-- /Full Page Image Header Area -->
<!-- Intro -->
<div id="about" class="intro">
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3 text-center">
<h2>Subtle Sidebar is the Perfect Template for your Next Portfolio Website Project!</h2>
<p class="lead">This template really has it all. It's up to you to customize it to your liking! It features some fresh photography courtesy of <a target="_blank" href="http://join.deathtothestockphoto.com/">Death to the Stock Photo</a>.</p>
</div>
</div>
</div>
</div>
<!-- /Intro -->
<!-- Services -->
<div id="services" class="services">
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-4 text-center">
<h2>Our Services</h2>
<hr>
</div>
</div>
<div class="row">
<div class="col-md-2 col-md-offset-2 text-center">
<div class="service-item">
<i class="service-icon fa fa-rocket"></i>
<h4>Spacecraft Repair</h4>
<p>Did your navigation system shut down in the middle of that asteroid field? We can repair any dings and scrapes to your spacecraft!</p>
</div>
</div>
<div class="col-md-2 text-center">
<div class="service-item">
<i class="service-icon fa fa-magnet"></i>
<h4>Problem Solving</h4>
<p>Need to know how magnets work? Our problem solving solutions team can help you identify problems and conduct exploratory research.</p>
</div>
</div>
<div class="col-md-2 text-center">
<div class="service-item">
<i class="service-icon fa fa-shield"></i>
<h4>Blacksmithing</h4>
<p>Planning a time travel trip to the middle ages? Preserve the space time continuum by blending in with period accurate armor and weapons.</p>
</div>
</div>
<div class="col-md-2 text-center">
<div class="service-item">
<i class="service-icon fa fa-pencil"></i>
<h4>Pencil Sharpening</h4>
<p>We've been voted the best pencil sharpening service for 10 consecutive years. If you have a pencil that feels dull, we'll get it sharp!</p>
</div>
</div>
</div>
</div>
</div>
<!-- /Services -->
<!-- Callout -->
<div class="callout">
<div class="vert-text">
<h1>A Dramatic Text Area</h1>
</div>
</div>
<!-- /Callout -->
<!-- Portfolio -->
<div id="portfolio" class="portfolio">
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-4 text-center">
<h2>Our Work</h2>
<hr>
</div>
</div>
<div class="row">
<div class="col-md-4 col-md-offset-2 text-center">
<div class="portfolio-item">
<%= image_tag "portfolio-1.jpg" %>
<h4>Cityscape</h4>
</div>
</div>
<div class="col-md-4 text-center">
<div class="portfolio-item">
<%= image_tag "portfolio-2.jpg" %>
<h4>Is That On Fire?</h4>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 col-md-offset-2 text-center">
<div class="portfolio-item">
<%= image_tag "portfolio-3.jpg" %>
<h4>Stop Sign</h4>
</div>
</div>
<div class="col-md-4 text-center">
<div class="portfolio-item">
<%= image_tag "portfolio-4.jpg" %>
<h4>Narrow Focus</h4>
</div>
</div>
</div>
</div>
</div>
<!-- /Portfolio -->
<!-- Call to Action -->
<div class="call-to-action">
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3 text-center">
<h3>The buttons below are impossible to resist.</h3>
<a href="#" class="btn btn-lg btn-default">Click Me!</a>
<a href="#" class="btn btn-lg btn-primary">Look at Me!</a>
</div>
</div>
</div>
</div>
<!-- /Call to Action -->
<!-- Map -->
<div id="contact" class="map">
<iframe width="100%" height="100%" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Twitter,+Inc.,+Market+Street,+San+Francisco,+CA&aq=0&oq=twitter&sll=28.659344,-81.187888&sspn=0.128789,0.264187&ie=UTF8&hq=Twitter,+Inc.,+Market+Street,+San+Francisco,+CA&t=m&z=15&iwloc=A&output=embed"></iframe>
<br />
<small>
<a href="https://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=Twitter,+Inc.,+Market+Street,+San+Francisco,+CA&aq=0&oq=twitter&sll=28.659344,-81.187888&sspn=0.128789,0.264187&ie=UTF8&hq=Twitter,+Inc.,+Market+Street,+San+Francisco,+CA&t=m&z=15&iwloc=A"></a>
</small>
</iframe>
</div>
<!-- /Map -->
<!-- Footer -->
<footer>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3 text-center">
<ul class="list-inline">
<li><i class="fa fa-facebook fa-3x"></i>
</li>
<li><i class="fa fa-twitter fa-3x"></i>
</li>
<li><i class="fa fa-dribbble fa-3x"></i>
</li>
</ul>
<div class="top-scroll">
<a href="#top"><i class="fa fa-circle-arrow-up scroll fa-4x"></i></a>
</div>
<hr>
<p>Copyright © Company 2013</p>
</div>
</div>
</div>
</footer>
<!-- /Footer -->
<!-- JavaScript -->
<%= javascript_include_tag "jquery-1.10.2.js" %>
<%= javascript_include_tag "bootstrap.js" %>
<!-- Custom JavaScript for the Side Menu and Smooth Scrolling -->
<script>
$("#menu-close").click(function(e) {
e.preventDefault();
$("#sidebar-wrapper").toggleClass("active");
});
</script>
<script>
$("#menu-toggle").click(function(e) {
e.preventDefault();
$("#sidebar-wrapper").toggleClass("active");
});
</script>
<script>
$(function() {
$('a[href*=#]:not([href=#])').click(function() {
if (location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') || location.hostname == this.hostname) {
var target = $(this.hash);
target = target.length ? target : $('[name=' + this.hash.slice(1) + ']');
if (target.length) {
$('html,body').animate({
scrollTop: target.offset().top
}, 1000);
return false;
}
}
});
});
</script>
</body>
</html>
CSS文件：
html,
body {
height: 100%;
width: 100%;
}
.vert-text {
display: table-cell;
vertical-align: middle;
text-align: center;
}
.vert-text h1 {
padding: 0;
margin: 0;
font-size: 4.5em;
font-weight: 700;
}
/* Side Menu */
#sidebar-wrapper {
margin-right: -250px;
right: 0;
width: 250px;
background: #000;
position: fixed;
height: 100%;
overflow-y: auto;
z-index: 1000;
-webkit-transition: all 0.4s ease 0s;
-moz-transition: all 0.4s ease 0s;
-ms-transition: all 0.4s ease 0s;
-o-transition: all 0.4s ease 0s;
transition: all 0.4s ease 0s;
}
.sidebar-nav {
position: absolute;
top: 0;
width: 250px;
list-style: none;
margin: 0;
padding: 0;
}
.sidebar-nav li {
line-height: 40px;
text-indent: 20px;
}
.sidebar-nav li a {
color: #999999;
display: block;
text-decoration: none;
}
.sidebar-nav li a:hover {
color: #fff;
background: rgba(255,255,255,0.2);
text-decoration: none;
}
.sidebar-nav li a:active,
.sidebar-nav li a:focus {
text-decoration: none;
}
.sidebar-nav > .sidebar-brand {
height: 55px;
line-height: 55px;
font-size: 18px;
}
.sidebar-nav > .sidebar-brand a {
color: #999999;
}
.sidebar-nav > .sidebar-brand a:hover {
color: #fff;
background: none;
}
#menu-toggle {
top: 0;
right: 0;
position: fixed;
z-index: 1;
}
#sidebar-wrapper.active {
right: 250px;
width: 250px;
-webkit-transition: all 0.4s ease 0s;
-moz-transition: all 0.4s ease 0s;
-ms-transition: all 0.4s ease 0s;
-o-transition: all 0.4s ease 0s;
transition: all 0.4s ease 0s;
}
.toggle {
margin: 5px 5px 0 0;
}
/* Full Page Image Header Area */
.header {
display: table;
height: 100%;
width: 100%;
position: relative;
background-image: image-url("bg.jpg") no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
/* Intro */
.intro {
padding: 50px 0;
}
/* Services */
.services {
background: #7fbbda;
padding: 50px 0;
color: #ffffff;
}
.service-item {
margin-bottom: 15px;
}
i.service-icon {
border: 3px solid #ffffff;
border-radius: 50%;
display: inline-block;
font-size: 56px;
width: 140px;
height: 140px;
line-height: 136px;
vertical-align: middle;
text-align: center;
}
/* Callout */
.callout {
color: #ffffff;
display: table;
height: 400px;
width: 100%;
background-image: image-url("callout.jpg") no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
/* Portfolio */
.portfolio {
padding: 50px 0;
}
.portfolio-item {
margin-bottom: 25px;
}
.img-portfolio {
margin: 0 auto;
}
/* Call to Action */
.call-to-action {
color: #ffffff;
background: #0a5175;
padding: 50px 0;
}
.call-to-action .btn {
margin: 10px;
}
/* Map */
.map {
height: 500px;
}
/* Footer */
footer {
padding: 100px 0;
}
.top-scroll {
margin-top: 50px;
}
.top-scroll a {
text-decoration: none;
color: inherit;
}
i.scroll {
color: #333333;
}
i.scroll:hover {
color: #0a5175;
}
/* Responsive */
@media (max-width: 768px) {
.header {
background-image: image-url("bg.jpg") no-repeat center center scroll;
}
.callout {
background-image: image-url("callout.jpg") no-repeat center center scroll;
}
.map {
height: 75%;
}
}
答案 0 :(得分：1)
运行bundle exec rake assets:precompile以预编译您的资产。 image-url("bg.jpg")字面上变为url(/assets/bg.jpg)，这会在您的案例中产生断开的链接。