Using a Rails helper method within a javascript asset

Question

Is there any way to use a Rails helper method, more specifically, a path helper method within a javascript asset file. This file foo.js.coffee.erb

Answer 1

This will also do the trick in an initializer:

Sprockets::Context.send :include, MyHelper

In development mode the helper will not be reloaded on every request.

Your approach with UrlHelpers will work until you need to find post_path(...um...we don't know what post id we'll need at compile time...). There is a ruby gem which reimplements all of your Rails UrlHelpers in JavaScript: https://github.com/railsware/js-routes