How do I get a Ruby CGI program that requires a gem to run properly?

问题

I have configured my Apache installation to run Ruby CGI scripts. I am now trying to run a simple Ruby CGI script that requires a gem.

When I run this script from the command line, it outputs correctly. But when I call it as an Apache CGI script, it generates an Apache Internal Server Error. The script looks like this:

#!/Ruby/bin/ruby

require 'RedCloth'  # <-- This is the gem

puts "Content-type: text/html"
puts 
puts
puts "<html>"
puts "<head>"
puts "</head>"
puts "<body>"
puts "I want to call a gem."
puts "</body>"
puts "</html>"

The Apache error log shows these lines:

C:/Ruby/lib/ruby/1.9.1/rubygems/config_file.rb:56:in `join': can't convert nil into String (TypeError)
[error] [client 127.0.0.1] \tfrom C:/Ruby/lib/ruby/1.9.1/rubygems/config_file.rb:56:in `<class:ConfigFile>'
[error] [client 127.0.0.1] \tfrom C:/Ruby/lib/ruby/1.9.1/rubygems/config_file.rb:28:in `<top (required)>'
[error] [client 127.0.0.1] \tfrom <internal:lib/rubygems/custom_require>:29:in `require'
[error] [client 127.0.0.1] \tfrom <internal:lib/rubygems/custom_require>:29:in `require'
[error] [client 127.0.0.1] \tfrom C:/Ruby/lib/ruby/1.9.1/rubygems.rb:1110:in `<top (required)>'
[error] [client 127.0.0.1] \tfrom <internal:lib/rubygems/custom_require>:29:in `require'
[error] [client 127.0.0.1] \tfrom <internal:lib/rubygems/custom_require>:29:in `require'
[error] [client 127.0.0.1] \tfrom <internal:gem_prelude>:167:in `load_full_rubygems_library'
[error] [client 127.0.0.1] \tfrom <internal:gem_prelude>:217:in `try_activate'
[error] [client 127.0.0.1] \tfrom <internal:lib/rubygems/custom_require>:32:in `rescue in require'
[error] [client 127.0.0.1] \tfrom <internal:lib/rubygems/custom_require>:29:in `require'
[error] [client 127.0.0.1] \tfrom C:/Apache/Apache2.2/cgi-bin/cgitest.rb:3:in `<main>'

When I don't include the require 'RedCloth' line, Apache executes my cgi script just fine.

Is there someting obvious that I'm missing here? Can you, in fact, even execute a Ruby CGI script that requires a gem? Any insights would be greatly appreciated.

Thanks, Maurice

回答1:

Have you try this ?

require 'rubygems'
require 'RedCloth'  # <-- This is the gem

来源：https://stackoverflow.com/questions/3775392/how-do-i-get-a-ruby-cgi-program-that-requires-a-gem-to-run-properly

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ruby

apache

rubygems

cgi