MongoDB syntax to fetch single field

help
1

I’m using meteor with angular js
this query fetches everything from parties collection
$scope.helpers({
parties: () => {
return Parties.find({});
}

I wanted to know how can i fetch single field in the same query?
if i do

$scope.helpers({
parties: () => {
return Parties.find({},{name:1,_id:0});
}
it shows the result well on mongoDb terminal but when i execute the same query in application i’m unable to o the same
how can i do that?

2

The format is a little different than pure mongo. You’re missing the fields specifier: http://docs.meteor.com/#/full/fieldspecifiers.

return Parties.find({}, {fields: {name: 1, _id: 0}});

3

i Tried this but its not working it gives me error
"You may not observe a cursor with {fields: {_id: 0}}"

4

Probably due to this:

With one exception, 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. However, such field specifiers can not be used with observeChanges, observe, cursors returned from a publish function, or cursors used in {{#each}} in a template. They may be used with fetch, findOne, forEach, and map.

Would leaving _id alone work? Like:

return Parties.find({}, {fields: {name: 1}});

Not sure what your use case is, but if it does work, then maybe you can just remove the id when rendering your view.

5

Thanks kako but its not working

i’m unable to figure out whats wrong with my code.