The error occurred while evaluating nil.chop

rubyonrails-talk
1

Hi,

I am new to Ruby, while running a project I get the following errors:

C:\cairns\cairns\cairns\script>ruby server => Booting WEBrick... server: No such file or directory - uname C:/cairns/cairns/cairns/app/models/node.rb:74:in `get_hostname': You have a nil object when you didn't expect it! (NoMethodError) The error occurred while evaluating nil.chop         from C:/cairns/cairns/cairns/app/models/node.rb:60:in `initialize'         from ./../config/../config/environment.rb:65:in `new'         from ./../config/../config/environment.rb:65         from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `ge m_original_require'         from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `re quire'         from C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/ active_suppo rt/dependencies.rb:495:in `require'         from C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/ active_suppo rt/dependencies.rb:342:in `new_constants_in'         from C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/ active_suppo rt/dependencies.rb:495:in `require'          ... 6 levels...         from C:/Ruby/lib/ruby/gems/1.8/gems/rails-1.2.5/lib/commands/ server.rb:3 9         from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `ge m_original_require'         from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in `re quire'         from server:3

Need Help!

Kind Regards,

2

Don't cd into the script dir, instead call it from the project root:

ruby script/server

3

Actually that doesn't seem to matter - the problem is that you're trying to call chop() on nil here:

C:/cairns/cairns/cairns/app/models/node.rb:60:in `initialize'

4

Also, if you're trying to get the machine's hostname, instead of invoking the shell to call uname or hostname or whatever, just use Socket.gethostname.