There's a dynamic method here that's less verbose - getDomainClass(). All artifacts have a getXXXClass() method, e.g. getControllerClass(), etc. Also controllers already have a 'grailsApplication' variable in scope, so no need for a holder. You'll need to make the method private since public methods are exposed as actions, and it's just a helper method anyway so it should be private. Also I typed the 1st argument since when I first looked at it I assumed based on the name that you'd be passing in either a Class or a DomainClass, but not a String. Not too hard to type the 3 extra chars in 'String' vs 'def' :)
If 'newProperties' is a Map (more mystery; a good argument for typing vars in method signatures -
mystery is fun in novels but less so when coding) then you can just do this:
private void saveDomainClassProperties(String domainClassName, Map newProperties) {
log.info "domainClass : $domainClassName"
def domainClassInstance = grailsApplication.getDomainClass(domainClassName).newInstance()
domainClassInstance.properties = newProperties
domainClassInstance.save(flush: true)
}
Note that the class name has to include the full package and name, i.e. 'com.foo.bar.Person'.
Burt
mschneider-1 wrote
Hi,
I'm looking for a way to create domain class instances dynamically.
But there is no need to compile new domain classes at runtime.
I hope the following code gives an idea what I'm trying to achive:
Domain:
---
Person {
String name
Integer age
}
Controller
---
public void saveDomainClassProperties(def domainClass, def newProperties) {
log.info("domainClass :" + domainClass)
def grailsApplication = applicationContextHolderBean.getGrailsApplication()
def domainClassInstance = grailsApplication.getArtefact(DomainClassArtefactHandler.TYPE,domainClass)
domainClassInstance.properties.each { property ->
log.info("property.name: " + property.name)
domainClassInstance.property = newProperties."${property.name}"
domainClassInstance.save(flush: true)
}
}
saveDomainClassProperties('Person',[name:"max",age:20])
It's clear that 'grailsApplication.getArtefact(DomainClassArtefactHandler.TYPE,domainClass)' it's not
the right method here, but has anybody an idea how to handle this?
Thanks in advance.
-markus
Locked
