freeCodeCamp/server/services/job.js

const whereFilt = {
  where: {
    isFilled: false,
    isPaid: true,
    isApproved: true
  },
  order: 'postedOn DESC'
};

export default function getJobServices(app) {
  const { Job } = app.models;

  return {
    name: 'jobs',
    create(req, resource, { job } = {}, body, config, cb) {
      if (!job) {
        return cb(new Error('job creation should get a job object'));
      }

      Object.assign(job, {
        isPaid: false,
        isApproved: false
      });

      return Job.create(job, (err, savedJob) => {
        cb(err, savedJob.toJSON());
      });
    },
    read(req, resource, params, config, cb) {
      const id = params ? params.id : null;
      if (id) {
        return Job.findById(id)
          .then(job => cb(null, job.toJSON()))
          .catch(cb);
      }
      return Job.find(whereFilt)
        .then(jobs => cb(null, jobs.map(job => job.toJSON())))
        .catch(cb);
    }
  };
}