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:
- run rails test
- run script/server and it works perfectly connecting to the database
without problems (sqllite) - run 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 the error below. I have checked that
removing all the “link_to” entries the error disappear. any ideas?
what am I forgetting?
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,
GA