loopback angular sdk get all users with a certain role - angularjs

Question

I'm currently stuck on getting all the users with certain role, for example admin users, in one angular SDK controller.
according to the docs of strongloop. what I did was:
User.find({
filter: {
include: [{'relation':'roles', 'scope': {
where:{
name:'admin',
}}
}],
},
}, function(list) {
console.log(list);
});
But the list i got is all the users, the non-admin users are included too. On the server side it is the default codes, i didn't change them.
{
"name": "user",
"plural": "Users",
"base": "User",
"properties": {
},
"relations": {
"roles": {
"type": "belongsTo",
"model": "RoleMapping",
"foreignKey": "principalId"
}
},
"acls": [],
"methods": []
}
Could you tell me what I made wrong? I don't want to loop through all the "list" from that query and filter the admin users, because it is a very huge list of users, but admin is for only 2 or 3 persons.

Answer 1

Here is the solution of what i did, from the common/models/user.js, i created a remotemethod, called "getUsersByRole", and only accept "role", which is the name of the role:
User.remoteMethod('getUsersByRole', {
accepts: [
{ arg: 'role', type: 'string', required: true },
],
returns: {arg: 'users', type: 'string'},
http: {
verb: 'get',
path: '/byrole/:role'
}
});
then here is the function of it:
User.getUsersByRole = function(role, cb) {
var loopback = require('loopback');
var Role = loopback.getModel('Role');
var userIdList = [];
Role.findOne({include:'principals', where: {name:role}}, function(err, role) {
role.principals(function(err, principals) {
for (var i = 0; i < principals.length; i++) {
userIdList.push(parseInt(principals[i].principalId));
}
if (userIdList.length > 0) {
User.find({where: {id: {inq: userIdList}}}, function(err, users) {
cb(err, users);
});
} else {
cb(err, false);
}
});
});
}
then run the lb-ng command to generate the service for angular client side, then run:
User.getUsersByRole({role:rolename}, function(list) {
});
in the controller.

Answer 2

Can you run the query from the role instead?
Role.find({
filter: {
where: {name:'admin'},
include: {'relation':'users'}
},
}, function(list) {
console.log(list);
});