mongoose .save() doesn't work

问题:

I have those code running try to save an object into MongoDB.

The .save() never got success run. the code running fine.

.save() method doesn't work.

var conn = mongoose.createConnection(mongoUrl, {auth: {authdb: "admin"}});
conn.on('error', function (err) {
    throw err;
});
conn.once('open', function callback() {
    console.log("connected to " + mongoUrl);
    var cacheSchema = mongoose.Schema({}, {strict: false});
    cacheSchema.set('collection', 'caches');
    // you need to specify which connection is uing.
    var Cache = conn.model('cache', cacheSchema);
    var measure = new Cache();
    measure['test'] = "test";
    measure.save(function(err){
        console.log('test');
    });
});

回答1:

I just ran into a similar issue in my code. For mine, I was dealing with an object within my user document. I had to run a user.markModified('object') before the user.save() to ensure the changes were saved to the database. My running theory is that Mongoose wasn't tracking items unset or removed from the database automatically

回答2:

Please read this part of documentation from mongoose and try the following:

   var measure = new Cache({test:'teste'}); 
   // or measure.set('test', 'teste');
   measure.save(function (err) {
                    console.log(err);
                });

You will be able to see the issue if there's any.

Update the issue is using:

var Cache = conn.model('cache', cacheSchema);

instead of

var Cache = mongoose.model('cache', cacheSchema);