Filter on level 2 properties - node.js

Question

I use LoopBack with MongoDB connector.
Models:
Application for a job:
{
"name": "application",
"plural": "applications",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"jobId": {
"type": "string",
"required": true
},
"staffId": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {},
"acls": [],
"methods": {}
}
Job:
{
"name": "job",
"plural": "jobs",
"base": "PersistedModel",
"idInjection": true,
"options": {
"validateUpsert": true
},
"properties": {
"title": {
"type": "string",
"required": true
}
},
"validations": [],
"relations": {
"applications": {
"type": "hasMany",
"model": "application",
"foreignKey": "jobId",
"primaryKey": "id"
}
},
"acls": [],
"methods": {}
}
If the user's id (staffId) is in the applications array I need to not show for user this job.
Example:
We have array of jobs with applications
[
{
id: 1,
title: "Job 1",
applications: [
{
jobId: 1,
staffId: 1
},
{
jobId: 1,
staffId: 2
}
]
},
{
id: 2,
title: "Job 2",
applications: [
{
jobId: 2,
staffId: 1
}
]
}
]
If user's id (staffId) is 2 then user sees only "Job 2".
I tried something like this:
/jobs?filter[include][applications]&filter[where not][applications][elemMatch][staffId]=2
But it doesn't work.
Any suggestions?
Thanks.

Answer 1

At this state of the development you can't filter on a level 2 properties with REST: https://github.com/strongloop/loopback/issues/517 (defect till 2014).
What you can do instead is to define a custom emote method that will contain something like:
var userId = 2;
Jobs.find({
include: {
relation: 'applications',
scope: {
where: {staffId: {eq: userId}},
}
}
}, function (err, jobs) {
});