Cobertura loaded information on 0 classes, classpath issue ?

In a grails application, we can use the code coverage plugin to generate the coverage reports. It is simple to use and generate the reports. I faced a perculiar problem while doing a grails test-app. I get an info message that cobertura loaded information on 0 classes

It took some time to figure out the problem. The code coverage plugin(present in the .grails folder) has the cobertura jars in its lib directory. By mistake the cobertura jar with a different version is checked in to the lib directory of the project. So there was a version conflict and hence cobertura was not loading the class informations. Once i removed the unnecessary cobertura jar in the projects lib directory, cobertura was generating reports normally. This could be one of the reasons for cobertura not loading the classes. Hope this helps if you are facing similar problem.

Authenticating Facebook user into Grails App

In my previous post I talked about how we can connect to Facebook from our application and get the user deatils. In this post we will discuss how we can authenticate the user based on his facebook user details. We will use acegi plugin of grails to allow uses our of web application to be authenticated by their facebook credentials . We dont need to aunthenticate them into our application like normal way. Let us see how that can be done!

Connect to Facebook in Grails App

Recently we integrated the Facebook connect plugin in our Grails project. In this post we will see how to connect to facebook and authenticate into facebook from our application. So that we can allow facebook users to use our Application.

First step would be to get the facebook connect button on to our home page. The code for this is below.

Getting the facebook connect button on our home page and its functionality

 <fb:login-button onlogin="facebook_onlogin();"></fb:login-button>