Adapting design to Grails

Question

I've finished a php/mysql CMS project, and since grails is the main subject for one of my classes, I figured why not play around with it some more and adapt the CMS to a grails app.

I'm currently modeling the domain, which consist of 4 classes: User, Labs, Files and Support. The User is the main domain of the app and has many Labs. Each Labs object has many Files and a single Support.

The goal of Support is to reference all the Users that are attached to a particular lab. Each lab has a lead, staff of 0 to many and a faculty advisor. My problem is how do I model this in Grails? I'm currently declaring a User lead and User faculty in the class, but am not sure how to manage 0 to many support staff.

If I do a static hasMany [user:User], this means that any User attached to the Support will be added without a distinguishing role.

Any suggestions?

Answer 1

I think it's just calling the relationship staff.

class Support{
   static hasMany = [ staff : User ] 
   User lead
   User facultyAdvisor
}

In your code then, you will call:

def support = new Support()
support.addToStaff( user1 )

which makes sense to me.

Your hasMany can be called anything. You can even have a relationship like

class Support{
    static hasMany = [ staff:User, leads: User, facultyAdvisors: User ]
} 

and this will allow you to distinguish the users by role.