From: Leslie Viljoen <leslie@...>
Date: 2005-11-07T16:23:14+09:00
Subject: Re: Rails and dirty namespaces

Stefan Lang wrote:

>On Friday 04 November 2005 09:56, Leslie Viljoen wrote:
>  
>
>>Hey people
>>
>>Just had quite an experience deploying my Rails app to Textdrive -
>>the Nitro gem was installed and there was a class in the Glue
>>module with the same name as my model... it took me two days to
>>figure it out!
>>
>>What I don't understand is how Glue got included in my project,
>>since all the Rails code I looked at makes no mention of it and I
>>didn't 'require' it. Running irb, the offending class was not
>>there, running script/console, it was included!
>>
>>How do I track down where it was included? Is there a way to list
>>the files that have been 'require'd? Is there a way to list all
>>classes available -
>>and is there a way to tell if a class is 'custom' versus included
>>with the base Ruby installation?
>>
>>Les
>>    
>>
>
>Save this in a file "loaded.rb":
>--------------------------------
>require 'rbconfig'
>
>def find_ruby_lib(name)
>    $LOAD_PATH.each { |dir|
>        fn = File.join(dir, name)
>        return dir, fn if File.exist? fn
>    }
>    raise "no such library loaded -- #{name}"
>end
>
>def is_std_library_dir?(dir)
>    dir == Config::CONFIG["rubylibdir"] ||
>        dir == Config::CONFIG["archdir"]
>end
>
>def print_loaded_libs
>    $LOADED_FEATURES.each { |lib_name|
>        dir, fn = find_ruby_lib(lib_name)
>        puts lib_name
>        puts "  path: #{fn}"
>        puts "  Standard Library" if is_std_library_dir?(dir)
>    }
>end
>--------------------------------
>Then, before exiting (or at least after all require's)
>do:
>    require 'loaded'
>    print_loaded_libs
>
>Example:
>    ruby -r optparse -r loaded -e 'print_loaded_libs'
>    optparse.rb
>      path: /usr/local/lib/ruby/1.8/optparse.rb
>      Standard Library
>    loaded.rb
>      path: ./loaded.rb
>    rbconfig.rb
>      path: /usr/local/lib/ruby/1.8/i686-linux/rbconfig.rb
>      Standard Library
>
>HTH,
>  Stefan
>  
>  
>
Thanks - great solution!