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Nice post!

Thank you for sharing

Thank you. The next in the series will be released next week.

This article has potential. There are a few errors though:

- the ANT_HOME is incorrect
- You should run “ant” before “ant test”, so the test directory gets created
- “jruby -S gem install rake” didn’t work for me. I had more luck with “jruby -S gem install –remote rake”
- You have to add “jdbc” to the list of RAILS_CONNECTION_ADAPTER in active_record.rb
- Why not just use “jruby script/generate scaffold_resource”?

Other than that, I found this article informative.

Bryan,

Thank you for the feedback. To answer your errors:

- the ANT_HOME is incorrect

>> I am sure that your development environment is different that mine. When I do “echo $ANT_HOME,” I get “/Developer/Java/ant”. When I do “echo “$JAVA_HOME,” I get “/System/Library/Frameworks/JavaVM.framework/Home.” Your results for ANT_HOME may vary depending on how you installed the Mac developer tools.

- You should run ?¢‚Ǩ?ìant?¢‚Ǩ¬ù before ?¢‚Ǩ?ìant test?¢‚Ǩ¬ù, so the test directory gets created

>> Noted and updated

- ?¢‚Ǩ?ìjruby -S gem install rake?¢‚Ǩ¬ù didn?¢‚Ǩ‚Ñ¢t work for me. I had more luck with ?¢‚Ǩ?ìjruby -S gem install ?¢‚Ǩ‚Äúremote rake?¢‚Ǩ¬ù

>> Interesting. I will look into that one as running “jruby -S gem install mygem” has worked for all gems on my machine. “Worked for me,” - famous last words ;).

- You have to add ?¢‚Ǩ?ìjdbc?¢‚Ǩ¬ù to the list of RAILS_CONNECTION_ADAPTER in active_record.rb

>> THANK YOU. I completely missed the lines to add to environment.rb. I have updated the tutorial accordingly.

- Why not just use ?¢‚Ǩ?ìjruby script/generate scaffold_resource?¢‚Ǩ¬ù?

>> Keeping it simple. That would be the way to go to make it RESTful though.

How long should I expect “ant test” to take? I am using RC3, but it has been over an hour now.

Jerry,

It only took a few minutes on my machine. Try using RC2 and let me know how that works. I will try with RC3 as soon as I have a chance - hopefully today or tomorrow. If you find out anything in the meantime, please let us know. Thank you for the FYI.

i cut it off after three hours. retried it and it took 3 minutes and 23 seconds. odd. but I am now feeling my way through the testapp. thanks so much for this guide.

Jerry,

My pleasure. Stay tuned as there are two more on the way. We will next cover installing Glassfish and getting Mephisto running under it. I am also looking into extending Java/Ruby classes using the other. Very exciting stuff!

This worked for me with RC3, with only the following stumble. I copied and pasted the database.yml setting into textmate, went back and made sure the tabs were all spaces, and still had the following error:
ScannerImpl.java:1048:in `org.jvyamlb.ScannerImpl.fetchValue’:NativeException: org.jvyamlb.ScannerException: ScannerException null we had this mapping values are not allowed here

my development entry needed to look like this:

development:
adapter: jdbc
driver: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost/testapp_development
username: root
password:

ok so that last post didn’t appear as i thought it would. i’ll try it again

and neither did that one. note to blog owner: tags don't work in comments.

bottom line: there only needs to be one level of indentation in the development entry of database.yml (not two as appears in the original post).

Ryan,

Thank you for pointing it out. My indentation didn’t come out correctly either. My tutorial did assume a basic understanding of Ruby on Rails so hopefully the folks will know.

[...] JRuby and its benefits to both Java and Ruby developers, and include two code demos. Visit the ADS blog for an introduction to getting JRuby running on Mac OS X and creating a Rails app that runs on [...]

[...] that ThoughtWorks is going to provide commercial support for JRuby. Don’t forget to check out our tutorial on getting JRuby up and running on Mac OS X. We will update the tutorial for version 1.0, and [...]

[...] we have JRuby installed, have created our first Rails app and have it running under JRuby, the next step is deploy our app [...]

I folks! anyB tried running jruby with grizzy server. I av bin tryin for dyaz now but jkeep getting dis error msg:
The driver encountered an error: cannot load Java class mysql

C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/ActiveRecord-JDBC-0.4/lib/active_record/connection_adapters/jdbc_adapter.rb:211:in `initialize’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/ActiveRecord-JDBC-0.4/lib/active_record/connection_adapters/jdbc_adapter.rb:10:in `new’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/ActiveRecord-JDBC-0.4/lib/active_record/connection_adapters/jdbc_adapter.rb:10:in `jdbc_connection’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in `send’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:262:in `connection=’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/query_cache.rb:54:in `connection=’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:230:in `retrieve_connection’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:in `connection’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1139:in `add_limit!’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1101:in `construct_finder_sql’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:998:in `find_every’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:418:in `find’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/deprecated_finders.rb:39:in `find_all’
C:/ruby-dev/jruby-1.0/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/deprecation.rb:3:in `find_all_with_deprecation’
#{RAILS_ROOT}/app/controllers/recipe_controller.rb:12:in `list’

i tried runing d cookbook rails app with grizzy. I run jruby 1.0,jdk1.6. Any help wld be appreciated.

[...] These instructions were very helpful. [...]

You can find some more JRuby and Ruby articles here:

http://www.developer.com/lang/article.php/3669041

@omoniaja,

I have seen some discussion of jruby and grizzly on the JRuby “users” mailing list. Here is the link: http://xircles.codehaus.org/projects/jruby/lists

My problem was the step: “Add a column named ?¢‚Ǩ?ìname?¢‚Ǩ¬ù to the migration run it” Some elaboration was needed for myself–I had to figure out that I had to edit the file testapp/db/migrate/001_create_widgets_table.rb and change it to something like the following:

class CreateWidgetsTable
  def self.up
    create_table :widgets do |table|
      table.column :name, :string
    end
  end

  def self.down
    drop_table :widgets
  end
end

Don,

Thanks for pointing that out. The little line under assumptions stating a basic understanding of Rails will get folks every time. In other tutorials I will remain cognizant of those who may be working with JRuby but have no experience with Ruby on Rails.

[...] made a simple widgets application as outlined here and installed JRuby/Glassfish as outlined here (both great articles at AD TechFL) and then [...]

[...] a series of screencast tutorials. We are starting out with JRuby. In this screencast, we took the first of our JRuby tutorials and made it happen. There is much more to come so stay tuned, and if you like it, let us know. As [...]

[...] Atlantic Dominion Solutions has posted a JRuby on Rails screencast. It is based on their excellent first JRuby tutorial, Get JRuby onto the Rails on Mac OS X. [...]

To view the Rails logs if you are using Goldspike and Glassfish you can check out
/domains/domain1/applications/j2ee-modules/appname/logs

This was not easy to find so hopefully this comment will help make this knowledge more accessible from Google.

[...] Ruby on Rails Website Development Blog from Atlantic Dominion Solutions I always like the “for dummies” version, which is what I have attempted to produce in this tutorial series. This first tutorial will cover installing JRuby, creating a test Rails application, and running it under JRuby. (tags: jruby java RubyOnRails glassfish ruby WebDev macosx) [...]

please anybody help how to install jruby

Manikandan,

What platform are you trying to use? This article pertains specifically to Mac (which is what we use here at ADS).

Thanks for the help. Your title says this is for Mac OS X, but it worked for me for Linux also. I’m running the CentOS 5 edition.

[...] Getting JRuby and Rails running. Deploying to Glassfish. Theirs posts are pretty detailed, but since things are moving so fast in the JRuby world, some of the details are a bit out of date already In it they use Goldspike to generate their WAR archive, just like I did. As I mentioned however, a post by Nick Sieger introduced me to warbler as another very promising replacement to Goldspike. To be more accurate, as Nick describes warbler, I fully expect to try it and stick with it instead of Goldspike. Defenitely worth a try. [...]

[...] Getting JRuby and Rails running. Deploying to Glassfish. Theirs posts are pretty detailed, but since things are moving so fast in the JRuby world, some of the details are a bit out of date already In it they use Goldspike to generate their WAR archive, just like I did. As I mentioned however, a post by Nick Sieger introduced me to warbler as another very promising replacement to Goldspike. In fact, as Nick describes warbler, I fully expect to try it and stick with it instead of Goldspike. Definitely worth a try. [...]

The BitNami team has released the JRubyStack.

A very easy to use installer that provides JRuby, Rails, Java, Tomcat, GlassFish gem, MySQL and Subversion. We worked to make the deployment of Ruby apps on Tomcat and Glassfish as smooth as possible.

JRubyStack is available for Mac OS X, Windows and Linux and you can download it from: http://bitnami.org/stack/jrubystack

Thanks!

… just started with JRUBY - thanks for the great - easy to start tut - looking forward to new tuts …