First App- Error 500

rubyonrails-talk
1

I've created a simple hello world app that doesnt appear to serve up the view greeting.rhtml. :< Any ideas ?

The error message is from development.log is... # Logfile created on Tue Aug 18 16:49:55 -0400 2009/!\ FAILSAFE /!\ Tue Aug 18 16:50:34 -0400 2009   Status: 500 Internal Server Error   unknown error

PS . It does show the default web page ok at http://localhost:3000 just not the app

Here is my controller in c:\ruby\hello\app\controllers \app_controller.rb ..... class AppController < ApplicationController

  def greeting   end

end

Here is my view in c:\ruby\hello\app\views\app\greeting.rhtml

<html>     <head>         Ruby on Rails     </head>     <body>         Yes its working!     </body> </html>

Here is the URL that I'm trying to access it

http://localhost:3000/App/greeting

2

PS . It does show the default web page ok athttp://localhost:3000 just not the app

It doesn't show the app because you don't actually have one.

You should read what you see at http://localhost:3000. Specifically, steps 1, 2, and 3 in the main panel give you some obvious tips on what's next.

If these tips are too vague you can find more detailed information on the right panel. Under "Browse the Documentation" follow "Rails Guides" to "Getting Started with Rails".

You might also consider picking up a book and working through an example. Pay careful attention here, however, to the versions of Ruby and Rails (and any gems and plugins) used in the book.

Happy tRails

3

I followed step by step the instructions for the first application in the Begining Ruby for Rails book and checked the online documentation before even posting.

Do you have any suggestions as shown I have a controller and a view and an application defined but its not finding it or giving me the error message posted.....any ideas ?

Thanks!

4

I followed step by step the instructions for the first application in the Begining Ruby for Rails book and checked the online documentation before even posting.

Do you have any suggestions as shown I have a controller and a view and an application defined but its not finding it or giving me the error message posted.....any ideas ?

Look at the log file in log/development.log It's probably something like a bad database setup or similar.

fred

5

I did look at the log file and even posted the error message in the very first post..

see...below...Any ideas ?

The error message is from development.log is... # Logfile created on Tue Aug 18 16:49:55 -0400 2009/!\ FAILSAFE /!\ Tue Aug 18 16:50:34 -0400 2009   Status: 500 Internal Server Error   unknown error

  Status: 500 Internal Server Error   unknown error

PS . It does show the default web page ok at http://localhost:3000 just not the app

Here is my controller in c:\ruby\hello\app\controllers \app_controller.rb ..... class AppController < ApplicationController

  def greeting   end

end

Here is my view in c:\ruby\hello\app\views\app\greeting.rhtml

<html>     <head>         Ruby on Rails     </head>     <body>         Yes its working!     </body> </html>

Here is the URL that I'm trying to access it

http://localhost:3000/App/greeting

6

Your problem is a missmatch between the controller name and the view directory name. If you're going to use application_controller.rb then c:\ruby\hello\app \views\app\greeting.rhtml should be c:\ruby\hello\app\views \application\greeting.rhtml.

You can use scaffold to help get more familiar with what goes where. Try this:

script/generate scaffold User name:string profile:text

Now check for new files in app\controllers, app\views, app\models, and db\migrations

Then run: rake db:migrate And restart your webserver and browse: http://localhost:3000/users

Rick

7

I did look at the log file and even posted the error message in the very first post..

see...below...Any ideas ?

Oops, didn't spot that. You may get a more verbose error if you try to run

ruby script/console

Fred

8

Using rails 2.3.3

I've put greeting.rhtml in both

app\views\app

and

app\views\application

SAME result....Any other ideas ?

I've tried starting it in console mode but it just says Load Develope Env >>

I'm trying to stay positive about Rails but am a little discouraged that I can get my first controller/view working :<

9

Using rails 2.3.3

I've put greeting.rhtml in both

app\views\app

and

app\views\application

SAME result....Any other ideas ?

As I said before, it should be greeting.html.erb , not greeting.rhtml . Why are you using .rhtml ? That hasn't been correct for a long time, and it makes me think that you may be following a tutorial for an older version.

I've tried starting it in console mode but it just says Load Develope Env >>

Yes, that's what it should say. What's the problem?

I'm trying to stay positive about Rails but am a little discouraged that I can get my first controller/view working :<

What documentation have you been using?

Best,

10

I've changed the view name to greeting.html.erb as suggested but SAME results..

I was jusing the book Beginging Ruby on Rails and looking at the online documentation.

Any other suggestions ?

11

ok, so just to be complete, what do you get when you type:

rake routes

12

C:\Ruby\hello>rake routes (in C:/Ruby/hello)   /:controller/:action/:id   /:controller/:action/:id(.:format)

13

When your http://localhost:3000 comes up, what do you see if you follow the link "About_your_application's_environment"?

I get:

Ruby version 1.8.7 (powerpc-darwin9.7.0) RubyGems version 1.3.4 Rack version 1.0 Rails version 2.3.3 Active Record version 2.3.3 Action Pack version 2.3.3 Active Resource version 2.3.3 Action Mailer version 2.3.3 Active Support version 2.3.3 Application root /Users/rick/hello Environment development Database adapter sqlite3 Database schema version 0

Also, using your app_controller.rb and views/app/greeting.rhtml in this environment does the right thing in response to http://localhost:3000/app/greeting.

14

When I click on About Environment , I get

We're sorry, but something went wrong

The log says !\ FAILSAFE /!\ Fri Aug 21 08:06:58 -0400 2009   Status: 500- Internal Server Error   unknown error

Unfortunately its not telling much more which is a little frustrating. I even downloaded ruby again , reinstalled rails . Then as before it failed initially because of sqlite3 not being there which I installed but then I still get the same error message...

Any ideas ?

If I do a gem list , I get

actionmailer (2.3.3) actionpack (2.3.3) activerecord (2.3.3) activeresource (2.3.3) activesupport (2.3.3) fxri (0.3.6) fxruby (1.6.16) hpricot (0.6.164) log4r (1.0.5) ptools (1.1.6) rack (1.0.0) rails (2.3.3) rake (0.8.7, 0.8.1) ruby-opengl (0.60.0) sqlite-ruby (2.2.3) sqlite3-ruby (1.2.1) test-unit (2.0.1) win32-api (1.2.1, 1.2.0) win32-clipboard (0.4.4) win32-dir (0.3.2) win32-eventlog (0.5.0) win32-file (0.5.5) win32-file-stat (1.3.1) win32-process (0.5.9) win32-sapi (0.1.4) win32-sound (0.4.1) windows-api (0.2.4) windows-pr (0.9.3)

15

mgpowers, do one thing. Create a new rails application mgp

rails mgp cd mgp ruby script/create controller myfirst greeting

in myfirst controller greeting action put

  def greeting     @n = "I am mgp"   end

in app\views\myfirst\greeting.html.erb put this

<b>Yes its working! <%=@n%></b>

remove your \public\index.html

Now start server -- ruby script/server (you should be inside your mgp directory)

goto http://localhost:3000/myfirst/greeting

you should get appropriate results.

let me know how it goes.

http://www.classifiedscript.in Free Craigslist Classified Script

16

http://www.buildingwebapps.com/learningrails

Start here with your first app. Download and follow all the screencasts - they are free.

17

Thanks for all the support....I am really trying to hang in there especially since there appears to be many good things with Rails but it is hard not knowing exactly why its failing.....Here is what happened when I tired creating the contollter...

C:\Ruby\mgp>ruby script/create controller myfirst greeting ruby: No such file or directory -- script/create (LoadError)

C:\Ruby\mgp>ruby script\create controller myfirst greeting ruby: No such file or directory -- script/create (LoadError)

C:\Ruby\mgp>dir Volume in drive C has no label. Volume Serial Number is 0C3F-B4D3

Directory of C:\Ruby\mgp

08/21/2009 10:13 AM <DIR> . 08/21/2009 10:13 AM <DIR> .. 08/21/2009 10:13 AM <DIR> app 08/21/2009 10:13 AM <DIR> config 08/21/2009 10:13 AM <DIR> db 08/21/2009 10:13 AM <DIR> doc 08/21/2009 10:13 AM <DIR> lib 08/21/2009 10:13 AM <DIR> log 08/21/2009 10:13 AM <DIR> public 08/21/2009 10:13 AM 307 Rakefile

18

Thanks for all the support....I am really trying to hang in there especially since there appears to be many good things with Rails but it is hard not knowing exactly why its failing.....Here is what happened when I tired creating the contollter...

C:\Ruby\mgp>ruby script/create controller myfirst greeting ruby: No such file or directory -- script/create (LoadError)

I think that was a typo in Rails List's post, it should have been ruby script/generate controller myfirst greeting

Colin

19

ok...do all the steps mentioned I still get the same error message.... Why doesnt Webrick tell us more about what exactly is wrong !?!?!!?

/!\ FAILSAFE /!\ Fri Aug 21 12:56:58 -0400 2009   Status: 500 Internal Server Error   unknown error     C:/Ruby/lib/ruby/1.8/dl/import.rb:29:in `initialize'     C:/Ruby/lib/ruby/1.8/dl/import.rb:29:in `dlopen'     C:/Ruby/lib/ruby/1.8/dl/import.rb:29:in `dlload'     C:/Ruby/lib/ruby/1.8/dl/import.rb:27:in `each'     C:/Ruby/lib/ruby/1.8/dl/import.rb:27:in `dlload'     C:/Ruby/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1-x86-mswin32/lib/ sqlite3/driver/dl/api.rb:63     C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'     C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'     C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.3/lib/ active_support/dependencies.rb:156:in `require'     C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.3/lib/ active_support/dependencies.rb:521:in `new_constants_in'     C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.3/lib/ active_support/dependencies.rb:156:in `require'     C:/Ruby/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1-x86-mswin32/lib/ sqlite3/driver/dl/driver.rb:33     C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'     C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'     C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.3/lib/ active_support/dependencies.rb:156:in `require'     C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.3/lib/ active_support/dependencies.rb:521:in `new_constants_in'     C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.3/lib/ active_support/dependencies.rb:156:in `require'     C:/Ruby/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1-x86-mswin32/lib/ sqlite3/database.rb:643:in `load_driver'     C:/Ruby/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1-x86-mswin32/lib/ sqlite3/database.rb:641:in `each'     C:/Ruby/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1-x86-mswin32/lib/ sqlite3/database.rb:641:in `load_driver'     C:/Ruby/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1-x86-mswin32/lib/ sqlite3/database.rb:107:in `initialize'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/sqlite3_adapter.rb:13:in `new'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/sqlite3_adapter.rb:13:in `sqlite3_connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:223:in `send'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:223:in `new_connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:245:in `checkout_new_connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:188:in `checkout'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:184:in `loop'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:184:in `checkout'     C:/Ruby/lib/ruby/1.8/monitor.rb:242:in `synchronize'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:183:in `checkout'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:98:in `connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:326:in `retrieve_connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_specification.rb: 123:in `retrieve_connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_specification.rb: 115:in `connection'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/query_cache.rb:9:in `cache'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/query_cache.rb:28:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/ active_record/connection_adapters/abstract/connection_pool.rb:361:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/head.rb:9:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/ methodoverride.rb:24:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/params_parser.rb:15:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/session/cookie_store.rb:93:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/reloader.rb:29:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/failsafe.rb:26:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/lock.rb:11:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/lock.rb:11:in `synchronize'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/lock.rb:11:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/dispatcher.rb:106:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/rails/rack/ static.rb:31:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/urlmap.rb:46:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/urlmap.rb:40:in `each'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/urlmap.rb:40:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/rails/rack/ log_tailer.rb:17:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/ content_length.rb:13:in `call'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/handler/ webrick.rb:46:in `service'     C:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'     C:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in `start'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:95:in `start'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in `each'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in `start'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:23:in `start'     C:/Ruby/lib/ruby/1.8/webrick/server.rb:82:in `start'     C:/Ruby/lib/ruby/gems/1.8/gems/rack-1.0.0/lib/rack/handler/ webrick.rb:13:in `run'     C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/commands/server.rb: 111     C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'     C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'     script/server:3

20

yes...but I still got the same result when I ran the application myfirst .... any way to get Ruby , rails to tell us what it really doesnt like vs. unknown error