I am in the process of deploying a Rails application (that works fine in development) to a new production server running Apache and Passenger. When I navigate to the main page, I get the following in my production.log (along with a 500 Internal Server Error from Apache):
ActionView::TemplateError (uninitialized constant Haml::Filters::Markdown) in app/views/sessions/new.haml
I have the haml and RedCloth gems installed:
*** LOCAL GEMS ***
[...]
haml (3.0.18)
RedCloth (4.2.3)
That constant is defined when I refer to it in a Rails console:
# script/console production
Loading production environment.
>> Haml::Filters::Markdown
=> Haml::Filters::Markdown
The problem doesn't occur in development, and the gems installed and codebase are the same. Any idea what is causing this?
Edit: Just for fun, I tried stopping Apache and Passenger and using script/server production to test, and it worked perfectly. So whatever the problem is, it has something to do with how Passenger is setting up the environment vs. script/server, it seems.
Edit 2: And... if I switch the #!/usr/bin/env ruby line in my script/server to point to the Ruby Enterprise Edition binary I'm using, it fails with the same error. So something is wrong with that install of ruby...
Edit 3: I discovered the issue was the gems installed under REE vs. standard Ruby. When both RedCloth and BlueCloth are installed, I get this error. When I remove the BlueCloth gem, the error goes away. So that's a temporary solution, but I'm not sure what functionality the BlueCloth gem provides that the RedCloth one doesn't.
Edit 4: I gave up on this issue, and wound up setting up bundler with a version number for rails but none of the other gems. After removing all gems and installing them all with bundle install, this issue doesn't come up anymore. No idea what the problem was before...