mongodb - Easiest way to copy/clone a mongoose document instance? -

my approach document instance, , create new 1 instance fields. sure there better way it.

can clarify mean "copy/clone"? going trying create duplicate document in database? or trying have 2 vars in program have duplicate data?

if do:

model.findbyid(yourid).exec(     function(err, doc) {          var x = doc;          model.findbyid(yourid).exec(             function(err, doc2) {                 var y = doc2;                 // right now, x.name , y.name same                 x.name = "name_x";                 y.name = "name_y";                 console.log(x.name); // prints "name_x"                 console.log(y.name); // prints "name_y"             });      }); 

in case, x , y 2 "copies" of same document within program.

alternatively, if wanted insert new copy of doc database (though different _id assume), this:

model.findbyid(yourid).exec(     function(err, doc) {         var d1 = doc;         d1._id = /* set new _id here */;         d1.save(callback);     } ); 

or if you're doing outset, aka created document d1, can call save twice without setting _id:

var d1 = new model({ name: "john doe", age: 54 }); d1.save(callback); d1.save(callback); 

there 2 documents differing _id's , other fields identical in database.

does clarify things bit?