GORM One-to-Many relationship without foreign keys - sql

Question

I've been trying for a while to understand how GORM works, and I think I've got it down. However, I'm having a heck of a time getting my relationships correct.
Here is my database schema setup (2 tables):
Table - Users
userhash varchar(255)
firstname varchar(255)
lastname varchar(255)
Table - Logs
userhash varchar(255)
accessdate date
There are no foreign key and primary key constraints defined in the tables. However, in the users table the userhash will be unique. I didn't design it this way, but I have to use it like this.
Now for my Grails domain classes:
Class - Users
class Users {
String userhash;
String firstname;
String lastname;
static hasMany = [logs: Logs]
}
Class - Logs
class Logs {
String userhash;
Date accessdate;
static belongsTo = Users;
}
In my controller, I do the following:
def user = Users.findByUserhash("nraboy");
println user.firstname;
println user.logs;
It prints out the correct firstname, but when I try to display the logs, it is null or empty. Am I requesting the data incorrectly for child tables or am I missing something somewhere in the domain class design?
I've tried to do the following, but had now luck as well:
Class - Logs
static mapping = {
id generator: "assigned", name: "userhash", type: "string"
}
Class - Users
static mapping = {
userhash generator: "foreign"
}
I figured the above would let me manually define the primary key and foreign key via code since it didn't exist int he tables. No luck though.
Any help would be appreciated.
Thanks,

Answer 1

It looks like you may have to do something with in Users for the logs association to force the foreign key to be in the Logs table, as it is. See the GORM docs One-to-Many Mapping section. Perhaps something like:
static hasMany = [logs: Logs]
static mapping = {
logs column: 'userhash'
}
I would be curious to hear if this worked...