Question

当我跑步时：

rake assets:precompile RAILS_ENV=production --trace

我得到以下异常：

rake aborted!
Sass::SyntaxError: Invalid CSS after " */": expected "}", was ""
(sass):19419
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:1179:in `expected'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:1115:in `expected'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:1110:in `tok!'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:656:in `block'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:647:in `ruleset'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:673:in `block_child'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:666:in `block_contents'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:123:in `stylesheet'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb:39:in `parse'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/engine.rb:403:in `_to_tree'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/engine.rb:278:in `render'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/sass_compressor.rb:48:in `call'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/sass_compressor.rb:28:in `call'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:60:in `block in load'
/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:318:in `fetch_asset_from_dependency_cache'
....

如何查找导致此异常的文件？ sass-rails中是否有选项来调试此问题？

注意：此应用程序的CSS / Javascript正在开发模式下运行。只有在生产中或运行rspec功能测试时预编译资产时才会发生此异常。

注意2：此问题仅在启用 config.css_compressor 时发生。如果我禁用它，资产将被预编译而不会出现问题。

Answer 1

我遇到了完全相同的问题。输出仅告诉您它失败的行，而不是实际的文件名。真的很简单快速＆amp;脏修复是打开文件抛出错误“/Users/fernando/.rvm/gems/ruby-2.3.0/gems/sass-3.4.21/lib/sass/scss/parser.rb”并添加一个put初始化器：

  def initialize(str, filename, importer, line = 1, offset = 1)
   puts filename # ADD THIS LINE.
   @template = str
    @filename = filename
    @importer = importer
    @line = line
    @offset = offset
    @strs = []
    @expected = nil
    @throw_error = false
  end

这会产生大量的输出但是当它失败时你会得到文件名。或者，由于文件名变量被放入实例变量@filename，您可以从回溯中的第一行（在您的情况下为1179）中获取行号，并使用实例变量将puts语句添加到错误之前的行：

 line 1178: puts @filename

Answer 2

我找不到让Rails为我提供有关哪个文件导致问题的更多信息的方法。

所以解决方案是编写一个删除CSS文件的脚本，运行assets：precompile并检查返回代码。我在所有css / scss文件上运行此脚本循环，直到资产：预编译最终工作。这是导致该问题的第三方CSS文件。

我必须手动检查文件，直到找到一些对CSS无效的评论。

删除这些评论后，rake资产：预编译可以处理所有文件。

Rails：找出哪个文件导致Sass :: SyntaxError异常？

2 个答案: