meteormeteor-publications

How to correctly use this.added


I'm trying to publish a collection and I would like to add in a field that doesn't exist in the collection. I might be way off track here but I thought I could use this.added() to add fields to the published collection. Can someone please show me what I'm doing wrong

Meteor.publish('job.view-open-to-candidate', function(jobCollectionId) {
  const job = Jobs.find({ _id: jobCollectionId }, {
    fields: {
      candidateApplication: 0
    }
  });

  this.added('job', jobCollectionId, {testNewField: 'test'})

  return job;
});

Solution

  • If you want to modify documents in publication you should use Cursor.observe() or Cursor.observeChanges().

    The most common pattern for that is (with modification you need):

    Meteor.publish('job.view-open-to-candidate', function(jobCollectionId) {
      const publication = this;
    
      const handle = Jobs.find({ _id: jobCollectionId }, {
        fields: {
          candidateApplication: 0
        }
      }).observeChanges({
        added(_id, fields) {
          const newFields = fields;
          newFields.testNewField = 'test';
          publication.added('jobs', _id, newFields);
        },
    
        changed(_id, fields) {
          const newFields = fields;
          newFields.testNewField = 'test';
          publication.changed('jobs', _id, newFields);
        },
    
        removed(_id) {
          publication.removed('jobs', _id);
        },
      });
    
      this.ready();
    
      this.onStop(() => {
        handle.stop();
      });
    });