Grails automatic databinding is super powerful, but, at least in versions 2.2.x and below, is rather obscure and not very-well documented. Sometimes is not clear how a form input should be named depending on what you want to bind. An example, for a given domain class User and a property […]

An explanation on why, when using Grails, you might get the error “groovy.lang.MissingPropertyException: No such property: id for class: org.codehaus.groovy.grails.web.taglib.NamespacedTagDispatcher” when rendering a view or a template

How to discover which beans are available in Grails at runtime, and how to see the configuration of any of them.

Grails gives the possibility of creating simple key/value map properties as a Map of String to String, but the documentation doesn’t show how to query by this type of properties.

This post illustrates how to query the domain class using the map property as part of the query (i.e adding a condition for the key X to have the value Y) using HQL.

Solution to the Grails problem when a domain class claims to have an abstract class as an effective class (i.e using getClass() and domainClass.class returns an abstract class) by removing the Hibernate proxy of that certain instance

When your Grails model gets a bit complex, you may find yourself with conflicts in your domain classes associations (I like some parts of GORM, such as dynamic finders, but I think the relationships stuff could be improved). In my case, I usually end up finding problems when I mix […]

So let’s say that in Groovy you find yourself wanting to do something like this: [ ‘name’, ‘lastName’, ‘address.street’].collect { propertyToResolve -> [(propertyToResolve): user[property] } You will find that the automatic getter (using it with the map syntax or as a property doesn’t change anything) won’t parse the argument to […]

Introduction and usage example of Grails Plugin Maven Deployer, a small scripting tool I created. The tool allows you to publish a plugin in a self-hosted maven repo by packaging it as a JAR file.