I''m having a problem importing a class from another project (not a RoR
application). What''s the right way to require such a file?
I have a class ModelPathwayObject. It''s in
#{RAILS_ROOT}/../lib/model_pathway_object.rb , so I add that path to
config.load_paths. In config/environment.rb:
Rails::Initializer.run do |config|
config.load_paths += %W( #{RAILS_ROOT}/../lib )
end
I then tried to require the file from config/environment.rb by appending
require ''model_pathway_object''
With these changes WEBrick wouldn''t start:
[luca@zirellu pa_web] ./script/server
=> Booting WEBrick...
[luca@zirellu pa_web]
So I moved the require to the top of my controller''s file. Now WEBrick
starts, but the first time I place a request to the controller I get an error
(Gem::LoadError in <controller not set>#<action not set>, trace at
the bottom
of this message), but afterwards it works fine.
I figure I''m doing something wrong, otherwise the thing would work from
the
first request. Can someone tell me what the right way to do this is? Thanks
in advance.
Luca
============================Trace on first request to controller:
Gem::LoadError in <controller not set>#<action not set>
Could not find RubyGem gnuplot (> 0.0.0)
RAILS_ROOT: script/../config/..
/usr/local/lib/site_ruby/1.8/rubygems.rb:194:in `report_activate_error''
/usr/local/lib/site_ruby/1.8/rubygems.rb:136:in `activate''
/usr/local/lib/site_ruby/1.8/rubygems.rb:37:in
`require_gem_with_options''
/usr/local/lib/site_ruby/1.8/rubygems.rb:31:in `require_gem''
./script/../config/../../lib/plot_utils.rb:2
./script/../config/../../lib/predictor_classes.rb:9
./script/../config/../lib/model_pathway_object.rb:6
./script/../config/../app/controllers/model_pathway_controller.rb:1
routing.rb:234:in `traverse_to_controller''
generated/routing/recognition.rb:7:in `eval''
generated/routing/recognition.rb:7:in `recognize_path''
This error occured while loading the following files:
script/../config/../app/controllers/model_pathway_controller.rb
model_pathway_object
predictor_classes
plot_utils
Nathaniel S. H. Brown
2006-Jan-20 00:09 UTC
[Rails] what''s the right way to require a file?
>From what I understand, all the files in lib are automatically loaded, youdon''t need to require them specifically. The load path that you see, scans the entire directory for rb files and includes them. Try removing the require, and simply just use the model_pathway_object within your app. -Nb ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Nathaniel S. H. Brown http://nshb.net ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~> -----Original Message----- > From: rails-bounces@lists.rubyonrails.org > [mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Luca Pireddu > Sent: January 19, 2006 4:03 PM > To: rails@lists.rubyonrails.org > Subject: [Rails] what''s the right way to require a file? > > I''m having a problem importing a class from another project > (not a RoR application). What''s the right way to require such a file? > > I have a class ModelPathwayObject. It''s in > #{RAILS_ROOT}/../lib/model_pathway_object.rb , so I add that > path to config.load_paths. In config/environment.rb: > > Rails::Initializer.run do |config| > config.load_paths += %W( #{RAILS_ROOT}/../lib ) end > > I then tried to require the file from config/environment.rb > by appending require ''model_pathway_object'' > > With these changes WEBrick wouldn''t start: > [luca@zirellu pa_web] ./script/server > => Booting WEBrick... > [luca@zirellu pa_web] > > So I moved the require to the top of my controller''s file. > Now WEBrick starts, but the first time I place a request to > the controller I get an error (Gem::LoadError in <controller > not set>#<action not set>, trace at the bottom of this > message), but afterwards it works fine. > > I figure I''m doing something wrong, otherwise the thing would > work from the first request. Can someone tell me what the > right way to do this is? Thanks in advance. > > Luca > > > ============================> Trace on first request to controller: > > Gem::LoadError in <controller not set>#<action not set> > > Could not find RubyGem gnuplot (> 0.0.0) > > RAILS_ROOT: script/../config/.. > > /usr/local/lib/site_ruby/1.8/rubygems.rb:194:in > `report_activate_error'' > /usr/local/lib/site_ruby/1.8/rubygems.rb:136:in `activate'' > /usr/local/lib/site_ruby/1.8/rubygems.rb:37:in > `require_gem_with_options'' > /usr/local/lib/site_ruby/1.8/rubygems.rb:31:in `require_gem'' > ./script/../config/../../lib/plot_utils.rb:2 > ./script/../config/../../lib/predictor_classes.rb:9 > ./script/../config/../lib/model_pathway_object.rb:6 > ./script/../config/../app/controllers/model_pathway_controller.rb:1 > routing.rb:234:in `traverse_to_controller'' > generated/routing/recognition.rb:7:in `eval'' > generated/routing/recognition.rb:7:in `recognize_path'' > > > This error occured while loading the following files: > script/../config/../app/controllers/model_pathway_controller.rb > model_pathway_object > predictor_classes > plot_utils > _______________________________________________ > Rails mailing list > Rails@lists.rubyonrails.org > http://lists.rubyonrails.org/mailman/listinfo/rails >
On Thursday 19 January 2006 17:08, Nathaniel S. H. Brown wrote:>From what I understand, all the files in lib are automatically loaded, you > don''t need to require them specifically. The load path that you see, scans > the entire directory for rb files and includes them. > > Try removing the require, and simply just use the model_pathway_object > within your app. > > -Nb > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Nathaniel S. H. Brown http://nshb.net > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~You''re right. Thanks for the tip. The file is required automatically. Luca