流星的简单模式，方法不返回数字

Question

I've seen lots of questions related to Meteor methods not being found but none of the solutions work for me. I am trying to implement and auto-increment _id field in my collection.

Here are my files:

server/methods.js

Meteor.methods({

getNextSequence: function(counter_name) {

    if (Counters.findOne({ _id: counter_name }) == 0) {

        Counters.insert({
            _id: counter_name,
            seq: 0
        });

        console.log("Initialized counter: " + counter_name + " with a sequence value of 0.");
        return 0;
    }

    Counters.update({
        _id: counter_name
    }, {
        $inc: {
            seq: 1
        }
    });

    var ret = Counters.findOne({ _id: counter_name });
    console.log(ret);
    return ret.seq;
}

});

and lib/collections/simple-schemas.js

Schemas = {};

Schemas.Guests = new SimpleSchema({
    _id: {
        type: Number,
        label: "ID",
        min: 0,
        autoValue: function() {
            if (this.isInsert && Meteor.isClient) {
                Meteor.call("getNextSequence", "guest_id", function(error, result) {
                    if (error) {
                        console.log("getNextSequence Error: " + error);
                    } else {
                        console.log(result);
                        return result;
                    }
                });
            }
            // ELSE omitted intentionally
        }
    }
});

Guests.attachSchema(Schemas.Guests);

I'm getting an error that I'm assuming is coming from Simple-Schema and it's saying Error: ID must be a Number , but my code is returning a number isn't it? Also my console.log messages are not showing up, the ones in the Meteor.methods call.

Answer 1

Give _id an optional: true setting. The autoValue will give it a real value but the required check is failing before it reaches the autoValue .

Answer 2

The argument you have passed inside the Meteor.call is not a number, but a string "guest_id" . You should pass this.value as it references the value passed to the key _id .

Your Meteor.call function would like the following:

Meteor.call("getNextSequence", this.value, function(error, result) {
                if (error) {
                    console.log("getNextSequence Error: " + error);
                } else {
                    console.log(result);
                    return result;
                }
            });