如何在Rails 3模型中访问image_path路由助手？

Question

I'm trying to use Sprockets' image_path method from within a Rails 3 model. I've tried including ActionView::Helpers::AssetTagHelper in my model and calling image_path but that does not work ( undefined local variable or method 'config' ).

Any ideas?

Update - this worked for me:

ActionController::Base.new.view_context.asset_path("image.png")

Answer 1

I think this is the standard way of loading the asset helper:

ActionController::Base.helpers.asset_path("image.png")

This seems preferable to creating a new instance of ActionController::Base and asking for the view context in that it is more explicit.