Grails define custom error message for command object

Question

I am writing a Grails (2.3.3 currently) application and have created a validateable command object similar to the following:

@Validateable
class MyCustomCommand {
  String name

  static constraints = {
    name blank: false
  }
}

In my i18n/messages.properties file I defined the following properties to override the default error messages.

MyCustomCommand.name.blank=Name must be provided.
MyCustomCommand.name.null=Name must be provided.

Which per the Grails documentation should be of the format [Class Name].[Property Name].[Constraint Code] as I have done. When I run my application if I leave the value blank I still get the default message for a null property.

I also tried following the example of the default messages and defining them a follows, but still get the default message.

MyCustomCommand.name.blank.message=Name must be provided.
MyCustomCommand.name.null.message=Name must be provided.

I am assuming that I am missing something simple here, but have yet to stumble upon what. Any suggestions on what I am doing incorrectly?

Answer 1

It is simple indeed. Message should look like:

myCustomCommand.name.blank=Name must be provided.
myCustomCommand.name.nullable=Name must be provided.


//className.propertyName.blank (camelCase with first letter of class name lower)

Answer 2

So, as I anticipated it was something simple. I was using the defaults as an example which used null where as what I really needed was nullable. Which does make sense as that matches the constraint name.

Therefore the correct version is:

myCustomCommand.name.blank=Name must be provided.
myCustomCommand.name.nullable=Name must be provided.