Question

我正在使用Sass :: Engine动态编译css文件，我需要传递环境并将路径加载到sprockets。这在开发中效果很好：

def compile_scss
  view_context = ActionView::Base.new
  environment = Rails.application.assets

  # body and filename are instance variables created elsewhere        
  @compiled_file = Sass::Engine.new(body,
                                    filename: filename,
                                    syntax: :scss,
                                    cache: false,
                                    load_paths: environment.paths,
                                    sprockets: {
                                      context: view_context,
                                      environment: environment
                                    }).render
end

但生产失败，因为Rails.application.assets为nil。什么是生产中的等价物？

Answer 1

Rails.application.assets在生产中总是nil，因为资产是从公共文件夹中预编译并提供的（感谢@ bkunzi01）。此外，Sprockets只需要将资产路径传递给它以便运行，而不是环境。这些路径可从Rails.application.config.assets.paths获得。我能够让我的样式表编译器使用以下方法。

def compile_scss
  view_context = ActionView::Base.new
  environment = Rails.application.assets || Rails.application.config.assets

  # body and filename are instance variables created elsewhere        
  @compiled_file = Sass::Engine.new(body,
                                    filename: filename,
                                    syntax: :scss,
                                    cache: false,
                                    load_paths: environment.paths,
                                    sprockets: {
                                      context: view_context,
                                    }).render
end

生产环境中Rails.application.assets的等价物是什么？

1 个答案: