Can a grails controller extend from a base class? How to make it so grails doesn't blow up?

Question

I wrote a base class to help build my controllers more quickly and to remove duplication. It provides some helper methods, default actions and some meta programming to make these things easier to build.

One of those methods in the base class is like this:

def dynamicList(Class clazz) {
    def model = new LinkedHashMap()
    model[getMapString(clazz) + "s"] = list(clazz)
    model[getMapString(clazz) + "sTotal"] = count(clazz)

    model
}

The action that calls it, also in the base class, is this:

def list = {
    dynamicList(clazz)
}

Unfortunately, when I go to list action in the controller subclass that inherits the base class when my application is deployed, I get this exception:

groovy.lang.MissingMethodException: No signature of method: groovy.lang.MissingMethodException.dynamicList() is applicable for argument types: (java.lang.Class) values: [class project
.user.User]

    at project.user.UserController$_closure1.doCall(UserController.groovy:18)

    at project.user.UserController$_closure1.doCall(UserController.groovy)

    at java.lang.Thread.run(Thread.java:619)

How can I hit grails over the head and just tell it do what I want it to do? My controller unit tests run just fine, so grails' run-time is totally at fault :/

Ken

Answer 1

Are you sure your inheritance is all proper and you've run grails clean etc.? The situation you've described should work just fine.

Answer 2

Is that the whole of the code? You're likely to run into problems with the call to list() in dynamicList() because it matches the action. In other words, list() is shorthand for list.call(), which will invoke the list closure.

Certainly something very strange is happening because the exception is saying it can't find the dynamiclist() method on the MissingMethodException class.

Do you have a reproducible example?