CODEWITHSUNDEEP
javascriptmeteorcursor
thegreenfrog
thegreenfrog

Reputation: 225

Manipulating Meteor cursors

I am writing a Meteor method that searches all of my collections for keywords. One stumbling point I am having is how to manipulate/concat returned cursors like arrays. Is it best to turn them into arrays concat and manipulate them from there, or is there a way to concat/manipulate cursors?

Thanks for all the help!

Upvotes: 1

Views: 219

Answers (2)

Daniel Budick
Daniel Budick

Reputation: 1850

I think you want to use

var array = [];
cursor.map(function( element ){
  //test element for keyword       
  if( isKeyword( element ) ){
    //add stuff to array
    array.push( element );
  }
});

Doc for map

Manipulation of a cursor makes no sense so you have to bring your own array to store the found data.

But what is this cursor? It is a mongo cursor and is defined here:

A pointer to the result set of a query. Clients can iterate through a cursor to retrieve results. By default, cursors timeout after 10 minutes of inactivity.

More information here.

Upvotes: 0

Kyll
Kyll

Reputation: 7139

A cursor can't be concatenated because a cursor is not a data structure, it is a data accessor.
It just says how to access data.

If you need to concatenate cursors, you can either store the data in a new collection/change a publication to aggregate, or you can fetch them and concatenate the resulting arrays.

Upvotes: 1

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