Hello guys,
I’ve been developing in Ruby for a few months and I am starting to work
with Rails. I am having a problem right from the start and I think I am
not doing anything wrong. I have performed the following steps:
- I have installed as gem activerecord-jdbc-adapter
- run jruby -S rails test
- updated database.yml with the following:
development:
adapter: oracle
host: flanders64
port: 1521
database: x2iq04
username: iq_manager
password: X2Iq01
Warning: The database defined as “test” will be erased and
re-generated from your development database when you run “rake”.
Do not set this db to the same as development or production.
production:
development
- run jruby script/server and it works perfectly connecting to the
database without problems - run jruby script/generate scaffold release_notes title:string
version:string content:text - rake db:migrate
- shutdown the server and start it again
- http://localhost:3000/release_notes/new and it works just fine
- After I click on create I get this error: any ideas?
NoMethodError in Release_notes#index
Showing release_notes/index.html.erb where line #15 raised:
You have a nil object when you didn’t expect it!
The error occurred while evaluating nil.to_sym
Extracted source (around line #15):
12: <%=h release_notes.title %>
13: <%=h release_notes.version %>
14: <%=h release_notes.content %>
15: <%= link_to ‘Show’, release_notes %>
16: <%= link_to ‘Edit’, edit_release_notes_path(release_notes)
%>
17: <%= link_to ‘Destroy’, release_notes, :confirm => ‘Are you
sure?’, :method => :delete %>
18:
RAILS_ROOT: /Users/gacilu/Knowledge Administration/Koiaka
Project/Projects/F1/Development/Iteration4/code/iqserver
Application Trace | Framework Trace | Full Trace
/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route.rb:145:in
extra_keys' /usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route.rb:145:in map’
/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route.rb:145:in
extra_keys' generated code (/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route.rb:45):3:in generate’
/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route.rb:122:in
generate' /usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/routing/route_set.rb:337:in generate’
/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/url_rewriter.rb:131:in
rewrite_path' /usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/url_rewriter.rb:110:in rewrite_url’
/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/url_rewriter.rb:88:in
rewrite' /usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/base.rb:622:in url_for’
/usr/local/jruby-1.1.4/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/helpers/url_helper.rb:71:in
url_for' (eval):17:in release_notes_path’
app/views/release_notes/index.html.erb:15:in
_run_erb_47app47views47release_notes47index46html46erb' app/views/release_notes/index.html.erb:10:in each’
app/views/release_notes/index.html.erb:10:in
_run_erb_47app47views47release_notes47index46html46erb' app/controllers/release_notes_controller.rb:7:in index’
:1:in `initialize’
Thanks,
Guillermo A.
Senior Engineer, Koiaka GmbH