html - Ruby on Rails - 导入 Bootstrap 错误 "File not found or unreadable"

Question

我是 RoR 的新手，目前正在使用名为 Cloud9 的云 IDE 进行开发。我开发了一个运行良好的应用程序，但是在更新我的 css 文件时，当我启动我看到的网站时不知从哪里冒出来

Error: File to import not found or unreadable: bootstrap-sprockets.
       on line 1 of .../app/assets/stylesheets/custom.css.scss

1: @import "bootstrap-sprockets";
2: @import "bootstrap";

这出现在 HTML 页面的左上角，我不确定为什么，因为所有 CSS 都已正确加载。这个错误随机出现，我不知道如何摆脱它。

自定义.css.scss

@import "bootstrap-sprockets";
@import "bootstrap";

/* universal */

body {
  padding-top: 60px;
}

section {
  overflow: auto;
}

textarea {
  resize: vertical;
}

.center {
  text-align: center;
}

.center h1 {
  margin-bottom: 10px;
}

/* typography */

h1, h2, h3, h4, h5, h6 {
  line-height: 1;
}

h1 {
  font-size: 3em;
  letter-spacing: -2px;
  margin-bottom: 30px;
  text-align: center;
}

h2 {
  font-size: 1.2em;
  letter-spacing: -1px;
  margin-bottom: 30px;
  text-align: center;
  font-weight: normal;
  color: #777;
}

p {
  font-size: 1.1em;
  line-height: 1.7em;
}

/* header */

#logo {
  float: left;
  margin-right: 10px;
  font-size: 1.7em;
  color: #777;
  text-transform: uppercase;
  letter-spacing: -1px;
  padding-top: 9px;
  font-weight: bold;
  &:hover {
    color: white;
    text-decoration: none;
  }
}

/* forms */

@mixin box_sizing {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

input, textarea, select, .uneditable-input {
  border: 1px solid #bbb;
  width: 100%;
  margin-bottom: 15px;
  @include box_sizing;
}

input {
  height: auto !important;
}

.checkbox {
  margin-top: -10px;
  margin-bottom: 10px;
  span {
    margin-left: 20px;
    font-weight: normal;
  }
}

#session_remember_me {
  width: auto;
  margin-left: 0;
}

gem 文件

source 'https://rubygems.org'

gem 'rails',        '4.2.2'
gem 'bootstrap-sass', '3.3.1'
gem 'autoprefixer-rails'
gem 'devise'
gem 'sprockets-rails'
gem 'uglifier',     '2.5.3'
gem 'coffee-rails', '4.1.0'
gem 'jquery-rails', '4.0.3'
gem 'turbolinks',   '2.3.0'
gem 'jbuilder',     '2.2.3'
gem 'sdoc',         '0.4.0', group: :doc

group :development, :test do
  gem 'sqlite3',     '1.3.9'
  gem 'byebug',      '3.4.0'
  gem 'web-console', '2.0.0.beta3'
  gem 'spring',      '1.1.3'
end

group :test do
  gem 'minitest-reporters', '1.0.5'
  gem 'mini_backtrace',     '0.1.3'
  gem 'guard-minitest',     '2.3.1'
end

group :production do
  gem 'pg',             '0.17.1'
  gem 'rails_12factor', '0.0.2'
end

Answer 1

尝试像这样将扩展名添加到 application.js 文件中:

//= require jquery
//= require jquery_ujs
//= require bootstrap
//= require turbolinks
//= require_tree .