GrapherJS how to create query join collection

1
  1. collection JobCollection
  2. collection JobAssignCollection

sql : SELECT jobAssigns.*,jobs.jobname FROM jobAssigns LEFT JOIN jobs ON(jobAssigns.jobId=jobs.jobId) WHERE jobs.deletedAt IS NULL;

JobAssignCollection.addLinks({
   'job' : {
        type: 'one',
        collection:JobCollection,
        field: 'jobId'
    }
});

JobAssignCollection.createQuery({
   $filters:{ "job.deletedAt" : null }, // how to add filter
});

how to filter deletedAt for job

Thank you.