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我正在创建一个自定义处理器，它需要在加载某些文件时将它们动态列入黑名单。特别是，我添加了两个指令“允许”和“限制”。以下是设置示例：

./manifest.js

#= allow Group1
#= require_tree .

./some_included_file.js

#= restrict Group1

./some_other_file.js

#= restrict Group2

在上述情况下，manifest.js 被加载，并尝试加载 some_included_file 和 some_other_file。然而，由于“允许 Group1”指令，只有第一个文件应该被捆绑，另一个不应该因为 Group2 限制（不允许）。

以下是我到目前为止的内容：

class CustomProcessor < Sprockets::DirectiveProcessor

  def process_allow_directive group

    unless defined? self.context.environment.custom_allow_list
      self.context.environment.class.module_eval { attr_accessor :custom_allow_list }
    end

    self.context.environment.custom_allow_list ||= []
    unless self.context.environment.custom_allow_list.include? group
      self.context.environment.custom_allow_list += [group]
    end
  end

  def process_restricted_directive *groups

    groups.each do |group|
      if defined? self.context.environment.custom_allow_list
        if self.context.environment.custom_allow_list.include? group

          # Allow the file to be included
          # Don't intervene
          return
        end
      end
    end

    # File is restricted, prevent loading, but....
    # ....HOW ??

  end
end

Rails.application.assets.register_preprocessor('application/javascript', CustomProcessor)
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