node.js - Update an array of documents in Mongoose -


how can update documents in collection attributes value needs different (a unique number) each document?

below current code. seems update (i don't error) values in db not being updated.

model.find({}, function (err, docs) {      if (err) {          console.log(err);      };    if(docs && docs.length > 0){       for(var i=0; i<docs.length; i++){      //set new value each doc - value must unique each doc         docs[i].code = generaterandomcode();          }       // pass in array of updated docs saved     model.update(docs, function (err, docs) {         if (err) {             console.log(err);         }          if(!err){                req.updatedsuccessfully = true;         }          return next();        });   } else{      return next();  }   });

before trying this:

model.update({}, { code: generaterandomcode() }, { multi: true }, function (err,      numberaffected, raw) {   if (err) return handleerror(err);   console.log('the number of updated documents %d', numberaffected);   console.log('the raw response mongo ', raw); });

the problem generaterandomcode() called once need create different code each document. neither of these example work.

instead of trying model.update(), can try save documents?

see answer question on url: update model mongoose, express, nodejs


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