grails console and creating/testing classes

Question

I know I can create a class using: grails create-domain-class book

This will create a class file in my project that I can then access via the console.

My question is 'how can I create a use a class in the console itself that I can then save()?'

If I type the following in the console I get an error:

  class Tree {
    String name
    Date dateCreated
  }

  def tree = new Tree(name:'oak').save()

The error I get is:

   Exception thrown

   groovy.lang.MissingMethodException: No signature of method: 
       Tree.save() is applicable for argument types: () values: []
   Possible solutions: wait(), any(), wait(long), each(groovy.lang.Closure),
        sleep(long), use([Ljava.lang.Object;)

    at ConsoleScript6.run(ConsoleScript6:6)

Answer 1

This isn't possible. You just created a plain class which the console compiles for you and makes available, but there's no way to transform it to a domain class and give it GORM behaviors.

Domain classes need to be in the grails-app/domain folder or can also be classes mapped with Hibernate hbm.xml files or annotations.

Answer 2

This is not true, you CAN test domain classes directly from Grails console -- just start your console script with "import package.domain-class-name"

If you have a domain class in package test:

class A {
String testStr
}

then create console script like so:

import test.A
def t = new A(testStr:"blah").save()

// works!

enjoy...