Error showing when used fields in the mongoDB query

Question

I am trying to find specific filed in the MeteorJS MongoDB but it's not working. I am new to this environment.

const gallery = Gallery.find( 
    { userID: Meteor.userId() }, 
    { fields: { _id: 1, projectImage: 1, projectVideo: 0 } }, 
    { sort: { createdAt: -1 }, 
    limit: Session.get("eventLimit") } ).fetch({});

Answer 1

Your syntax is wrong, first, "fields", "limit" and "sort" should all be in 1 "options" object and fetch does not require an argument, this example works:

const gallery = Gallery.find({
  userID: Meteor.userId()
},{ 
  fields: { _id: 1, projectImage: 1}, 
  sort: { createdAt: -1 }, 
  limit: Session.get("eventLimit") 
}).fetch();

also, please note that I removed "projectVideo:0" from my example, "it is not possible to mix inclusion and exclusion styles: the keys must either be all 1 or all 0. The exception is that you may specify _id: 0 in an inclusion specifier, which will leave _id out of the result object as well." (from the Meteor docs collections#fieldspecifiers )

So you have to choose to whitelist your wanted fields with 1's or blacklist unwanted fields with 0.

Hope this helps!