Missing helper file helpers//Users/xxxx/Sites/xxxx/app/helpers/application_helper.rb_helper.rb

[waissbluth]

I had a very strange issues out of the blue today. Happens for every controller action; app server and console boot up fine.

It started happening without any changes, and rolling back to a previous commit didn't fix it either. Reinstalling ruby and rails and all the rest of the gems didn't fix it either.

Setup: OSX Yosemite, Ruby 2.2.0, Rails 4.1.9.

Missing helper file helpers//Users/xxxx/Sites/xxxx/app/helpers/application_helper.rb_helper.rb

I finally fixed it by renaming all directories (i.e. Sites to sites) in the apps path to lowercase (except /Users).

Full story here: http://stackoverflow.com/a/27966165/893510

[rafaelfranca]

Can you please provide a sample application that reproduces the error?

[waissbluth]

I apparently can't be done, as when I rolled back to a previously-working
commit the error persisted.

On Fri, Jan 23, 2015 at 1:50 PM, Rafael Mendonça França <
notifications@github.com> wrote:

Can you please provide a sample application that reproduces the error?

—
Reply to this email directly or view it on GitHub
#18660 (comment).

Nicolás Waissbluth Razmilic

[sevenseacat]

I've seen this reported several times in the #rubyonrails IRC channel over the last few weeks - haven't been able to pin down a cause.

[amgray]

I've had this problem intermittently since upgrading to Ruby 2.2.0 and Rails 4.2.0 (I'm on Yosemite). Renaming my directories to match case (as per http://stackoverflow.com/questions/27871726/strange-error-in-rails-missing-helper) solves the problem - until I reboot when the issue reappears as OS X re-capitalises a directory name.

[etipton]

Shot in the dark, but possibly related to: https://bugs.ruby-lang.org/issues/10700 ?

[dcunning]

I'm hitting this error as well on Rails 4.1.9 after switching to Ruby 2.2.0. This line is erroring (filename equals application_helper)

The issue goes away when changing /Users/dan/Projects/my_app to /Users/dan/projects/my_app. My guess is an issue with ruby-2.2.0, unrelated to Rails.

[jgrannas]

Same error here after upgrading to rails 4.2.0

AbstractController::Helpers::MissingHelperError in HomesController#index
Missing helper file helpers//users/joel/sites

my sites folder is "Sites" capitalized

[robmathews]

I think the issue is unrelated to rails, as I encountered the issue after upgrading our project to ruby 2.2.0 from ruby 2.1.2, NOT changing the rails version.

[robmathews]

@etipton - the timing of that ruby issue https://bugs.ruby-lang.org/issues/10700 and the bug they are trying to fix exactly match. Looks like the guy tested against a Mac OSX machine that had a case sensitive file system (who does that??) and "fixed" his bug, but broke it for the rest of the world.

[Beengie]

I only changed the "sites" folder name then renamed it back and it work. I have seen people stating that they renamed the entire directory. It is not needed in my circumstance. Hope that helps.

mv sites sites1
mv sites1 sites

[sgrif]

Yeah, this looks unrelated to Rails.

[sgrif]

Looks like some other contributors have been digging into this and do think it's an issue in the Rails code-base.