Jakob Külzer Ninja Coding Monkey goes Canada


Grails Scaffolding In-Depth

Much of Grails power and ability to crank out applications can be accounted to its scaffolding mechanism for creating CRUD interfaces within no time. However, the default scaffolding templates provide only a simple boilerplate and fail to convince for more sophisticated forms. I spent quite some time in the previous weeks writing scaffolding templates. A lot of this process was trial and error, browsing source code and bothering Tomás Lin. I still have to find good documentation on this, so I'm posting my findings here in the hope to help people leveraging Grails even more. If you are just trying to understand how scaffolding works to building something more advanced, this is for you.


Grails and LiquiBase – How to use

In my current project I'm now at a point where the application has come pretty far but is still far from finished. The domain model is not perfect, but very stable at this point -- changes however, are still possible.

To get going with the application we are planning to perform tests with some real data. The problem at this point is that entering real data into a database that might be wiped due to changes in the domain model is a very tedious task, at least for the person responsible for entering the data. And the reason for running such a test is to find problems with the domain model which lead to the dreaded changes in the domain model. This cat bites her own tail...

As wiping out the database and re-entering the data is not an option at this point, I decided to look into LiquiBase which as been sitting on my delicious list for quite a while.

This post is an attempt to write down my experiences and learned lessons with LiquiBase. The documentation of LiquiBase is technically complete and extensive but lacks more information about how to use it in a real project. This is an attempt to create a guide on how to leverage LiquiBase in a real world project.