Help geting started

Rails
1

Hi

I am reading O’Reilly Rails Cookbook, but I can not get the examples
working. Here is what I have done so far:

rails mytest --database=mysql

ruby script/generate migration build_db
–BuildDb class–
class BuildDb < ActiveRecord::Migration
def self.up
create_table :schedules, :force => true do |t|
t.column :scheduleTime, :datetime
t.column :repeatEveryYear, :boolean
t.column :message, :string

  t.timestamps
end

end

def self.down
drop_table :schedules
end
end
–BuildDb class–

rake db:migrate

ruby script/generate model schedules (generates a new empty migration,
I deleted it)

ruby script/generate controller schedules

Edited my controller, and added: scaffold :schedules

But when I try to test my application, the mongrel log gives me this:

Wed Aug 11 12:06:10 +0200 2010: Error calling Dispatcher.dispatch
#<NoMethodError: You have a nil object when you didn’t expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.split>
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/cgi_process.rb:52:in dispatch_cgi' /Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/ action_controller/dispatcher.rb:101:indispatch_cgi’
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/dispatcher.rb:27:in dispatch' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb: 76:inprocess’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/rails.rb:
74:in synchronize' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb: 74:inprocess’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:159:in
process_client' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:ineach’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:158:in
process_client' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:inrun’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:285:in
initialize' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:innew’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:285:in
run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:ininitialize’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:268:in
new' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:inrun’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/
configurator.rb:282:in run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/ configurator.rb:281:ineach’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/
configurator.rb:281:in run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:inrun’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/
command.rb:212:in run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281 /usr/bin/mongrel_rails:19:inload’
/usr/bin/mongrel_rails:19

Hm well should this not work?

Thank you
Søren

2

On 11 August 2010 11:13, neigaard [email protected] wrote:

Hi

I am reading O’Reilly Rails Cookbook, but I can not get the examples
working.

That’s not really a beginners tutorial book - it’s more for reference
on how to deal with specific problems.
You may be better off with a book like “Agile Web D. With
Rails”, which does take you through from first principles.

Also, I’m not sure how up-to-date the Cookbook is (mine’s for Rails
1.2 I think!), and it looks like you’re running 2.3.8, so that may be
part of the problems you’re having.

3

neigaard wrote:

Hi

I am reading O’Reilly Rails Cookbook, but I can not get the examples
working. Here is what I have done so far:

rails mytest --database=mysql

Maybe you should start Rails learning by following
‘http://guides.rubyonrails.org/’ site.

Thanks,
Anubhaw

4

On 08/11/2010 12:13 PM, neigaard wrote:

Hi

I am reading O’Reilly Rails Cookbook, but I can not get the examples
working. Here is what I have done so far:

Hey,

I also just started learning rails. First I’ve read “The well grounded
Rubyist” to learn the language itself and now I’m reading “Agile Web
Development with Rails”.

Cheers,

Jan

5

Well, I am now reading

(also tried Agile Web D. with Rails), but I do not get very
far. I follow the guide to chapter 4.1, but when I point my browser to
http://localhost:3000/home/index I get a blank page and the following
in mongrel.log:

Fri Aug 13 12:20:22 +0200 2010: Error calling Dispatcher.dispatch
#<NoMethodError: You have a nil object when you didn’t expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.split>
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/cgi_process.rb:52:in dispatch_cgi' /Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/ action_controller/dispatcher.rb:101:in dispatch_cgi’
/Users/sneigaard/.gem/ruby/1.8/gems/actionpack-2.3.8/lib/
action_controller/dispatcher.rb:27:in dispatch' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb: 76:in process’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/rails.rb:
74:in synchronize' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb: 74:in process’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:159:in
process_client' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:158:in each’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:158:in
process_client' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in run’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:285:in
initialize' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:285:in new’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:285:in
run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in initialize’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel.rb:268:in
new' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel.rb:268:in run’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/
configurator.rb:282:in run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/ configurator.rb:281:in each’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/
configurator.rb:281:in run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in run’
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/
command.rb:212:in run' /Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281 /usr/bin/mongrel_rails:19:in load’
/usr/bin/mongrel_rails:19

Any ideas? Is my rails setup broken? I am runing on OS X 10.6.4, is it
is broken, then how can I uninstall it all and reinstall?

Thank you
Søren

6

Ok I tested some more, and I found out that it works with the webrick
(ruby script/server webrick) server, so my mongrel must be broken some
how? I did a:

sudo gem uninstall fastthread
sudo gem uninstall mongrel
sudo gem install mongrel

But still I get the same error with mongrel. Well I can work with
webrick, but I sure would like to know what is wrong with my mongrel.

Thank you
Søren

7

you can also take a look at this Chapter 1: From zero to deploy | Ruby on Rails Tutorial | Learn Enough to Be Dangerous

http://railstutorial.org/bookas far as you environment being broken
that’s
hard to tell without more information