Blogs
One feature that I really like in Grails 2.0 is action arguments databinding. While reading more about it I also found a nice grails.web.RequestParameter annotation. When you know something you always find its use case. In my recent project I need to take radius and height as params for creating a cylinder so my action looks like [java] ...
As I am a lazy programmer most of the time I dont implement toString and equals methods on my grails domain classes. I would like to say thanks to Groovy for helping me out and giving me a ready made recipe for this. Now I just need to annotate my class with ToString and EqualAndHashCode annotation it adds appropriate implementation of...
There are time when we need to see the sql logging statement just for a method of for a particular code. Although we already have logSql property in DataSource to do it for us but it sometimes makes difficult if we need to see the log for a small piece of code rather than for whole project. So I need something that will execute my code...
Recently I worked on a project where I used spring security plugin. Its a very wonderful plugin for making your application secured from unauthorized users. It gives you a simple annotation @Secured to add security to your action and controller. Thats the first time I got to know the real use case of annotation. So I started reading about...
Grails console plugin is one of those which I always add to my projects. It really gives you a very handy way of debugging things and also run some quick fixes. Whenever you hit the console action you always gets a predefined message on it about the available variables, which is really good when you are a new user but in most of the...
Reading the grails docs is like my habit, they always enhances your learning. Today I was going through the grails docs again and I found a very good way of showing some custom error messages. As I saw it I found the use case in one of my project that could be refactored by this approach There are use cases where we need to show some...
Annotations really provides a whole new view of programming things. Groovy also provides some of its own annotations one of them is Category. Lets take an example of using it. We create a IntegerUtil class and annotate it with Category. [java] @Category(Integer) class IntegerUtil { List<Integer> multiples(Integer...
Data Binding in grails is something that I love alot. In most of the cases we look at the Binding with respect to some domain class but binding can be one of the best candidate for searching and filtration. In my recent project we had a domain Class Article and the user could filter articles on different criteria. The page looks...
In our recent grails project, we were about to move to production so we decided to manage the database changes with liquibase. So we generated the changelog from development env by executing the command "grails generate-changelog /home/uday/projects/projectName/grails-app/migrations/changelog.xml" which contained all the table creation...