Question

I’m looping over an array of JSON data returned from couchdb, and added the data to an array then returning the array, The array should contain the rows from couchdb but [] is returned.

var Album = {
  all: function() {
    var data, albums = [];
    request({ uri: 'http://127.0.0.1:5984/albums/_all_docs'}, function(error, response, body) {
        if (error) throw error;
        data = JSON.parse(body);
        data.rows.forEach(function(d) {
            request({ uri: 'http://127.0.0.1:5984/albums/' + d.id }, function(error, response, body) {
                if (error) throw error;
                albums.push(JSON.parse(body));  
            });
        });
    });
    return albums;
  }
};

Answer 1

[] will be returned initially, although once the callback executes the array will contain the necessary data. That’s the nature of node’s callbacks – they are asynchronous.