Question

我正在开发一个传统的Rails 3.2.8项目，当我运行项目时，我得到了：

ActionView::Template::Error (uninitialized constant Sass::Engine
  (in /Users/sergiotapia/Documents/Work/foobar/app/assets/stylesheets/application.css.scss)):
    2: <html>
    3: <head>
    4:   <title>Foobar</title>
    5:   <%= stylesheet_link_tag    "application", :media => "all" %>
    6:   <%= javascript_include_tag "application" %>
    7:   <%= csrf_meta_tags %>
    8:   <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
  app/views/layouts/application.html.erb:5:in `_app_views_layouts_application_html_erb__1845727542545946075_70110608859600'
]

  Rendered vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms)
  Rendered vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.7ms)
  Rendered vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (7.3ms)

我的Gemfile看起来像这样，bundle install运行没有任何问题。我也可以完美地迁移我的数据库：

source 'https://rubygems.org'

gem 'rails', '3.2.8'
gem 'sqlite3'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
  gem 'sass-rails',   '~> 3.2.3'

  # Used by Twitter Bootstrap and/or Font Awesome
  gem 'therubyracer'

  gem 'bootstrap-sass', '~> 2.2.2.0'
  gem 'font-awesome-sass-rails'
end

gem 'jquery-rails'

gem 'devise' # Devise must be required before RailsAdmin
gem 'rails_admin', '0.4.3'
gem "cancan" # Allows us to disable Create and Delete actions for SiteSettings
gem "paperclip", "3.3.0" # Used for file uploads for ad Creatives
gem 'mysql2'
gem 'ruby-mysql'
gem 'useragent' # Allwos for easy detection of iOS devices
gem 'rmagick' # Dynamic e-carrd image generation

为什么Rails会显示此错误？

Answer 1

我也遇到过这个问题。我通过以下方式解决了这个问题：

从资产组中取出'sass-rails'。
手动添加'sass'宝石：gem 'sass', '3.2.19'
我也使用'bourbon'，在此过程中我还必须从：assets组中取出它并将其修复为3.1.8版本。

我正在使用的haml版本也是3.1.8。

Answer 2

请尝试从Gemfile中的gem 'sass-rails', '~> 3.2.3'块中取出group :asset。

gem 'sass-rails',   '~> 3.2.3'

group :assets do
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'

  # Used by Twitter Bootstrap and/or Font Awesome
  gem 'therubyracer'

  gem 'bootstrap-sass', '~> 2.2.2.0'
  gem 'font-awesome-sass-rails'
end

# Other gems

ActionView :: Template :: Error（未初始化的常量Sass :: Engine）

2 个答案: