Sprockets error Sprockets :: NotImplementedError: custom helper helper resource not implemented

Question

I get the following when trying to recompile my resources locally

RAILS_ENV=production bundle exec rake assets:precompile rake aborted! Sprockets::NotImplementedError: Custom asset_path helper is not implemented Extend your environment context with a custom method. environment.context_class.class_eval do def asset_path(path, options = {}) end end /Users/cman/.rvm/gems/ruby-2.2.2@jbd-ruby2.2.2/gems/sprockets-3.6.0/lib/sprockets/context.rb:198:in `asset_path' /Users/cman/.rvm/gems/ruby-2.2.2@jbd-ruby2.2.2/gems/sprockets-3.6.0/lib/sprockets/context.rb:218:in `font_path' /Users/cman/.rvm/gems/ruby-2.2.2@jbd-ruby2.2.2/gems/font-awesome-rails-4.6.1.0/app/assets/stylesheets/font-awesome.css.erb:15:in `_evaluate_template' 

I can’t let my life determine why this happens - any suggestions on how to cope will be very grateful!

Update

I can only precompile if I add an initializer with the following:

 Rails.application.assets.context_class.class_eval do def asset_path(path, options = {}) return '' end end 

However, if I do this when I click on my intermediate environment, the glyphics from Bootstrap have an empty path and therefore do not display:

 font-face{font-family:'Glyphicons Halflings';src:url("");src:url("") format("embedded-opentype"),url("") format("woff"),url("") format("truetype"),url("") 

UPDATE 2

If I change the initializer to the following, I get the path in my precompiles boot resource for glypicons, but this is not for the precompiled Glyphicon file, but the path without compilation:

 Rails.application.assets.context_class.class_eval do def asset_path(path, options = {}) #return '' "/assets/#{path}" end end @font-face{font-family:'Glyphicons Halflings';src:url("/assets/bootstrap/glyphicons-halflings-regular.eot");src:url("/assets/bootstrap/glyphicons-halflings-regular.eot?#iefix") format("embedded-opentype"),url("/assets/bootstrap/glyphicons-halflings-regular.woff") format("woff"),url("/assets/bootstrap/glyphicons-halflings-regular.ttf") format("truetype"),url("/assets/bootstrap/glyphicons-halflings-regular.svg#glyphicons_halflingsregular") 

Here is my gemfile.lock as it relates to asset / star gems:

 bootstrap-sass (3.1.1.0) sass (~> 3.2) rails (4.2.5.2) actionmailer (= 4.2.5.2) actionpack (= 4.2.5.2) actionview (= 4.2.5.2) activejob (= 4.2.5.2) activemodel (= 4.2.5.2) activerecord (= 4.2.5.2) activesupport (= 4.2.5.2) bundler (>= 1.3.0, < 2.0) railties (= 4.2.5.2) sprockets-rails sass (3.2.19) sass-rails (4.0.5) railties (>= 4.0.0, < 5.0) sass (~> 3.2.2) sprockets (~> 2.8, < 3.0) sprockets-rails (~> 2.0) 

Answer 1

You can easily overcome this problem. Although your current problem is more likely related to a version-related issue, and not sure if you linked the update correctly. But there is an alternative solution. Try to install the following stone:

https://github.com/petebrowne/sprockets-helpers

Answer 2

I suggest that the main problem be in the sprockets version. in my rails 4.2.6 the project I use sprockets 3.6.0, and in your fragment Gemfile.lock you use the version

Like the test, you can upgrade the rails to 4.2.6 and try fresh stars 3.6.0 + sprockets-rails 3.0.1 and fresh stones sass-rails 5.0.4 and sass 3.4.22 . I really don't know which of these updates will help, but I think it should work.

Answer 3

I don’t know if this matches the answer or not, but I just lowered my Heroku report and confirmed everything that was precompiled. Then I slowly upgraded all my gems, and everything went on to fit correctly. I guess I'll never know what caused this. Thanks to those who contributed.