如何在资产管道中包含 ActionView 助手?
问题描述：
如何包含 Rails 视图助手以便资产管道执行上下文可以访问?
How to include Rails view helpers to be accesible by assets pipeline execution context?
一个示例用例是使用 form_tag 辅助方法为表单生成标记，并使其可用于 Javascript 模板(如把手、jst 等).
An example use case would be to generate the markup for a form, using form_tag helper method, and make it available to a Javascript template (like handlebars, jst, etc.).
我使用 handlebar_assets gem，但这也适用于任何 erb 或 haml 模板.
I use handlebar_assets gem, but this should apply to any erb or haml template too.
答
创建一个初始化程序并在资产的上下文中包含帮助程序，如下所示:
Create a inititializer and include the helpers in the context of the assets like this:
Rails.application.assets.context_class.class_eval do
include ActionView::Helpers
include MyAppHelper
include Rails.application.routes.url_helpers
end
取自这个链轮问题