javascript - Integrating asynchronous mongo call within an inner forEach loop -


i got 2 loops, outer loops on users , inner 1 loops on venueid's of each user. within inner loop want venue , attach array defined in outer (useritem). because foreach synchronous , mongo database asynchronous result remains empty. i've tried integrate this answer no avail. how this?

ret = []; users.foreach(function(user) {     var useritem = user.getsanitised('adm');      useritem.venues = [];      var tmp = [];      useritem.adminvenueids.foreach(function(adminvenueid){         tmp.push(function(callback) {              venue.findone({_id:adminvenueid}, function(error, venue) {                  callback(null, venue.toobject());             });         });      });      async.parallel(useritem.venues, function(err, result) {         /* code run after calls finished job or          when of calls passes error */         if (err)             return console.log(err);          useritem.venues.push(result);     });     ret.push(useritem); });

tried following doesn't work also

users.foreach(function(user) {      var useritem = [];     async.series({              setuseritem : function(callback)             {                 useritem = user.getsanitised('adm');                 callback(null, 'ok');             },             setuservenues : function(callback)             {                 useritem.venues = [];                 user.adminvenueids.foreach(function(adminvenueid,index) {                      venue.findone({_id:adminvenueid}, function(error, venue) {                          useritem.venues.push(venue.toobject());                          if((index+1) == user.adminvenueids.length)                             callback(null, 'ok');                      });                 });             }          },         function(error, results) {              if(error)                 winston.error(error);              ret.push(useritem);          }      );   });

i think might want using mongoose. nodejs application layer on top of mongodb provides more sql experience.

http://mongoosejs.com


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