laravel4 one to one relationship can not load the relationship - php

Question

I have two tables like this:
users
id email
1 abc#ibm.com
2 abc#hp.com
3 abc#google.com
grp_members
grp_id user_id
1 2
2 2
13 1
13 3
2.My model
There, one group member must be a user, so its a one to one relationship just for GroupMember.
Users model about table users
class Users extends Eloquent {
protected $table = "users";
}
GroupMember model about table group_members
class GroupMember extends BaseModel{
protected $table = "grp_members";
public function user(){
return $this -> hasOne('Users', 'id');
}
}
3.In my service GroupApi.php, if I have a query like this
class GroupApi {
public function queryGroupMembers(){
$result = GroupMember::all();
var_dump(get_class(GroupMember::all())); //CODE ONE
foreach($result as $ret){
var_dump(get_class($ret)); //CODE TWO
var_dump(get_class($ret -> user)); //CODE THREE
}
}
}
As you see, when I invoke var_dump(get_class(GroupMember::all())) at CODE ONE,
I got this
.string(39) "Illuminate\Database\Eloquent\Collection"
Yes, that's what I want.
Now, at CODE TWO, it prints
string(11) "GroupMember"
Yes, also correct object, but when the code goes to CODE THREE, it give me a surprise,
the outputs like this:
string(8) "GroupApi"
Why its an instance of GroupApi, but not the instance of Users or GroupMember
And in that case , how can I invoke $ret -> user?
Any idea is welcome, thanks very much.

Answer 1

There are some things I'm not sure I understand in your implementation but something that could be causing you troubles is not using the conventions Laravel asks for, that being using User as the model name and users (model + s) as the table name.
Also, i would guess $g1 is not a GroupMember object as you suggest, could you getClass() it and comfirm?

Answer 2

Ok, I guess you have 3 tables:
users; grp_members; groups
and a many-to-many relationship between users and groups using the table grp_members as pivot table.
In this case, try this:
Class User:
class User extends Eloquent {
public function groups()
{
return $this->belongsToMany('Group', 'grp_members');
}
}
Class Group:
class Group extends Eloquent {
public function users()
{
return $this->belongsToMany('User','grp_members');
}
}
And also change the field name in the table 'grp_members' from grp_id to group_id, to follow eloquent conventions.