Error 500: Executing action [list] of controller [app.InvitationCodeController] caused exception: groovy.lang.MissingMethodException: No signature of method: static app.InvitationCode.list() is applicable for argument types: (org.codehaus.groovy.grails.web.servlet.mvc.GrailsParameterMap) values: [[action:list, controller:invitationCode, max:10]]
Servlet: grails
URI: /app/grails/invitationCode/list.dispatch
Exception Message: No signature of method: static app.InvitationCode.list() is applicable for argument types: (org.codehaus.groovy.grails.web.servlet.mvc.GrailsParameterMap) values: [[action:list, controller:invitationCode, max:10]]
Caused by: No signature of method: static app.InvitationCode.list() is applicable for argument types: (org.codehaus.groovy.grails.web.servlet.mvc.GrailsParameterMap) values: [[action:list, controller:invitationCode, max:10]]
Class: script12814638559751136092009
At Line: [13]

With the Stack Trace:

groovy.lang.MissingMethodException: No signature of method: static app.InvitationCode.list() is applicable for argument types: (org.codehaus.groovy.grails.web.servlet.mvc.GrailsParameterMap) values: [[action:list, controller:invitationCode, max:10]]

	at app.InvitationCodeController$_closure2.doCall(script12814638559751136092009.groovy:13)

	at app.InvitationCodeController$_closure2.doCall(script12814638559751136092009.groovy)

	at org.apache.shiro.web.servlet.ShiroFilter.executeChain(ShiroFilter.java:687)

	at org.apache.shiro.web.servlet.ShiroFilter.doFilterInternal(ShiroFilter.java:616)

	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:81)

	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)

	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)

	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)

	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)

	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)

	at java.lang.Thread.run(Thread.java:619)

Although it runs on the local server grails run-app, the same problem occurs with grails run-war, and also on the Tomcat 6 on eapps. So after a little Googling, here is the magical solution:

grails clean

This solves the problem

These are the links that can help:

• http://jira.codehaus.org/browse/GRAILS-4951?focusedCommentId=231632#action_231632
• http://www.pubbs.net/201002/grails/62508-grails-user-no-signature-of-method-issue-with-list.html
• Yada yada

Yes this seems to be a Mac issue, the solution is as follows:

Solution 1: Update the Adobe Unit Types.osax to version 2.1.0.

1. Click this link to download the Adobe Unit Types.osax version 2.1.0 file.
2. Choose /Library/ScriptingAdditions.
3. Move the existing Adobe Unit Types.osax file to a backup location.
4. Copy the downloaded version of the Adobe Unit Types.osax file to the /Library/ScriptingAdditions folder. Select Yes to authenticate this operation.
5. Restart your computer.

This is from the link http://kb2.adobe.com/cps/516/cpsid_51615.html

Since finding a good starter document is a very important decision, I took my time to select my first RoR source. I went over the following books and decided to use the latter one:

• Ruby on Rails For Dummies
• Sitepoint Simply Rails 2nd Edition
• Beginning Ruby on Rails
• The Ruby on Rails Tutorial Book

Although it is called as a tutorial, when you get the pdf dump, the 12 chapter tutorial is approximately 500 pages, which is literally a book.

The language of the book is very clean and most of the time funny. You can easily develop the code when you are reading it.  You can also follow a test driven approach if you want, but you don’t have (I didn’t).

I finished the book in 7 days with a daily 4 hours concentrated reading/coding sessions and with lots of Starbucks Misto (thanks Starbucks Besevler crew!).

The final code is at Github, and live demo site at Heroku.

As a pointer for the further steps, the tutorial suggest some pointers but I prefer to go on with my path, which requires ImageMagick and Paperclip, so next post will be about these two.

See you next time!

ps. I really like Heroku. Grails has something similar but to be honest, it is not that magical (as in iPad).

@Remotespots project was started a couple of months ago and and after some time all the technologies were updated to their current versions (Grails 1.2.2, GWT 2.0 which is a huge change from 1.7, and finally grails-gwt 0.5). Since we were busy w/ the features we ignored the upgrade but time has come to sent Remotespots to the wild, and we want it to be ready to its limits. Below you can find the steps and obstacles we encountered during the upgrade process. (I switched to Ubuntu from Windows XP, my headphones are still not working but at least I can open Eclipse under 60 seconds! so the things below is tested on Ubuntu 9.04)

• Download and change GRAILS_HOME to new grails version (1.2.2)
• Run grails upgrade
• Run install-plugin gwt (so that it installs 0.5)
• First obstacle

Error executing script CompileGwtModules: No such  property: usingGoogleGin  for class: _Events
gant.TargetMissingPropertyException: No such property: usingGoogleGin for class: _Events
        at gant.Gant$_dispatch_closure4.doCall(Gant.groovy:329)
        at gant.Gant$_dispatch_closure6.doCall(Gant.groovy:334)
        at gant.Gant$_dispatch_closure6.doCall(Gant.groovy)
        at gant.Gant.withBuildListeners(Gant.groovy:344)
        at gant.Gant.this$2$withBuildListeners(Gant.groovy)
        at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
        at gant.Gant.dispatch(Gant.groovy:334)
        at gant.Gant.this$2$dispatch(Gant.groovy)
        at gant.Gant.invokeMethod(Gant.groovy)
        at gant.Gant.processTargets(Gant.groovy:495)
        at gant.Gant.processTargets(Gant.groovy:480)

To solve it, run grails clean command and empty ~\.grails\1.2.2\scriptCache folder. I found this solution from this link.

• Another problem you are likely to see is

  grails  GWT module ... may need to be (re)compiled

  To solve it, run grails compile-gwt-modules command and refresh firefox w/ ctrl+f5 OR alt+shift+r

• Last thing to be careful is, after started the gwt client with the command grails run-gwt-client, since GWT 2.0 get rid of hosted mode (finally), to see the changes on your code w/out restarting the server, add the suffix to the url ?gwt.codesvr=127.0.0.1:9997, from this link, you can find the solutions to the problems people have w/ the grails-gwt plugin.

Anyway, for some time I consider turn back to good old J2EE, then wander on the land of some other Java enterprise frameworks (Spring MVC, Wicket, Struts 2, Hibernate etc ) then Google App engine Java with its in progress full stack framework like environment. Then I decide that all the ones mentioned above has steep learning curves and without feeling complely comfortable with them, It is imposible to develop sth quickly.

Then the obvious direction was rails. First give a try to Django, then read some about  RoR but both of them somehow scare me out. I need to learn a new language (which Django tutorial specificly warns about looking a good python tutorial before devlde into Django), on the other hand, Grails (my love!) just start the sentence with “don’t worry about the groovy, you can learn it along the way”.

Obviously, Grails is relatively new compared to two other alternative and it has (or used to have) to many bugs for a relaible product.

But trust me, it is easy to just start and kick the first alfa version of sth out is a joy.

–

Ok this post is suppose to be a yet another introduction to Grails tutorial, so…

Steps to Get Started

1.  install Grails (there is nothing I can add here — http://www.grails.org/Installation)

2. open command line and create a project with grails create-app Yeap

3. Go to the created directory cd Yeap

4. Type grails run-app

That’s it!

I’m currently using Apache Shiro plugin (previously JSecurity), Gwt plugin, Postgresql, Eclipse for the development, More posts related to these will be here soon (I hope)