Re: Google App Engine Rails Template

>
> Hi Christian,
>
> I wonder if you have any idea what might be going wrong here. I
> downloaded the Nick Sieger template and added your addition to the
> application_controller.rb, added the appengine-api-1.0-sdk-1.2.1.jar
> to the lib folder and require it in config/development.rb. But I get
> the following error after I start the application:
>
> NameError in SnoopController#index
>
> cannot load Java class
> com.google.appengine.api.datastore.dev.LocalDatastoreService
>
> RAILS_ROOT: C:/wsp/siegerails/examples/rails
>
> Application Trace | Framework Trace | Full Trace
> C:/jr/lib/ruby/site_ruby/1.8/builtin/javasupport/core_ext/object.rb:87:in
> `get_proxy_or_package_under_package'
> C:/jr/lib/ruby/site_ruby/1.8/builtin/javasupport/java.rb:51:in
> `method_missing'
> C:/wsp/siegerails/examples/rails/app/controllers/application_controller.rb:20
> C:/wsp/siegerails/examples/rails/app/controllers/application_controller.rb:380:in
> `load'
> C:/wsp/siegerails/examples/rails/app/controllers/snoop_controller.rb:1
> C:/wsp/siegerails/examples/rails/app/controllers/snoop_controller.rb:380:in
> `load'
>
>
>
> On Tue, Jun 16, 2009 at 5:12 AM, Christian Seiler
> <chr.seiler@... <mailto:chr.seiler@...>> wrote:
>
>     I haven't played with it lately so I need to recall..
>
>     Well, first of all my dev environment is not a real AppEngine setup,
>     it's plain JRuby/Rails plus Datastore. That's all I have used so
>     far (no
>     memcache or mailer). One thing you need to do is require the
>     appengine-api-1.0-sdk-1.2.1.jar to make the AppEngine stuff available.
>     I've put the jar in the lib folder and require it in
>     config/development.rb.
>
>     I think that's all. By the way, I used this example as project
>     template:
>     http://github.com/nicksieger/jruby-rack/tree/bb907c03c48eb999e7d099068245b91eeda545bf/examples/rails
>
>     I hope this helps!
>
>     Carson Welsh wrote:
>     >
>     > Hi Christian
>     >
>     > Thanks for the code sample.
>     >
>     > I am very eager to use a standard Ruby development environment
>     for App
>     > Engine without restarts as you have described.
>     >
>     > I have spent several hours trying to use your code sample to
>     configure
>     > a Rails project with GAE but so far have been unsuccessful.
>     >
>     > Have you made any other significant changes to your Rails app
>     besides
>     > what you mentioned?
>     >
>     > Thanks,
>     > Carson
>     >
>     >
>     >
>     >
>     >
>     >     From: *Christian Seiler* <chr.seiler@...
>     <mailto:chr.seiler@...>
>     >     <mailto:chr.seiler@... <mailto:chr.seiler@...>>>
>     >     Date: Mon, Jun 15, 2009 at 5:37 AM
>     >     To: user@... <mailto:user@...>
>     <mailto:user@... <mailto:user@...>>
>     >
>     >
>     >     My workaround in development mode so far: Simply using
>     Webrick as
>     >     usual
>     >     plus setting up the datastore in the controller
>     >     (application_controller.rb).
>     >
>     >      if Rails.env=='development'
>     >        before_filter :setup_datastore
>     >        after_filter  :teardown_datastore
>     >      end
>     >
>     >      protected
>     >
>     >        if Rails.env=='development'
>     >          import com.google.apphosting.api.ApiProxy
>     >          import
>     >     com.google.appengine.api.datastore.dev.LocalDatastoreService
>     >          import
>     com.google.appengine.tools.development.ApiProxyLocalImpl
>     >
>     >          class DevEnvironment
>     >            include ApiProxy::Environment
>     >            def app_id
>     >              'Dev Environment'
>     >            end
>     >          end
>     >
>     >          def setup_datastore
>     >            ApiProxy.environment_for_current_thread =
>     DevEnvironment.new
>     >            ApiProxy.delegate = Class.new(ApiProxyLocalImpl).new
>     >     java.io.File.new('.')
>     >            #ApiProxy.delegate.set_property
>     >     LocalDatastoreService::NO_STORAGE_PROPERTY, 'true'
>     >          end
>     >
>     >          def teardown_datastore
>     >          
>      #ApiProxy.delegate.get_service('datastore_v3').clear_profiles
>     >            ApiProxy.delegate = nil
>     >            ApiProxy.environment_for_current_thread = nil
>     >          end
>     >        end
>     >    
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