• active_support/core_ext/array/access
• active_support/core_ext/hash/keys
• active_support/core_ext/string/output_safety
• action_view/helpers/content_exfiltration_prevention_helper
• action_view/helpers/tag_helper

• 模块 ActionView
• 模块 ActionView::Helpers
• 模块 ActionView::Helpers::UrlHelper
• 模块 ActionView::Helpers::UrlHelper::ClassMethods
• 模块 URI