meteor - How to update subscription documents? - mongodb

Question

I subscribe some collection from server. After I try to delete one document from client side it shows remove failed: Access denied. so I tried to delete it from server side by Meteor.call it works fine but client side has same number of documents.
Below code will explain you better.
ClientJS:
Template.Message.onCreated(function () {
this.autorun(function () {
this.subscription = Meteor.subscribe('mymessage');
}.bind(this));
});
Template.Message.onRendered(function () {
this.autorun(function () {
if (this.subscription.ready()) {
console.log(Message.find().count()); //10
}
}.bind(this));
});
ServerJS:
Meteor.publish('mymessage', function() {
console.log(Message.find().count()); //10
return Message.find();
});
In a click event
ClientJS:
Meteor.call("deletemsg", this._id._str, function(error, result){
if(!error){
console.log(Message.find().count()); // 10, Want to update document here.
}
});
Serverjs
Meteor.methods({
deletemsg: function (delmsg) {
if(Message.remove({"_id":new Mongo.ObjectID(delmsg)})){
console.log(Message.find().count()); //9
return true;
} else {
throw new Meteor.Error("some error message");
}
}
});
Note : I am using existing Mongodb.

Answer 1

Your error is probably related to your configuration of the native rules allow and deny. You should have somewhere on your server a piece of code looking like that (Message being your collection name):
Message.allow({
insert: function (userId, doc) {
//allow rule
},
update: function (userId, doc, fields, modifier) {
//allow rule
},
remove: function (userId, doc) {
//allow rule
}
});
Or an equivalent with deny. It looks like your current user is not allowed to delete (i.e. remove) messages from the collection.
Quick sidenote: you don't need to wrap your subscriptions in an autorun. If you use iron-router, you can use the built in functions to subscribe. In your routes options, you can add something like this:
action: function() {
if(this.isReady()) { this.render(); } else { this.render("loading");}
},
isReady: function() {
var subs = [
Meteor.subscribe("yourPublication")
];
var ready = true;
_.each(subs, function(sub) {
if(!sub.ready())
ready = false;
});
return ready;
},

Answer 2

You don't need to use _str as _id is already string.
Client JS
Meteor.call("deletemsg", this._id, function(error, result){ //Remove _str from here
if(!error){
console.log(Message.find().count()); // 10, Want to update document here.
}
});
Server JS
When you delete document, you need to pass only id, not object.
Meteor.methods({
deletemsg: function (delmsg) {
if(Message.remove(delmsg)){
console.log(Message.find().count()); //9
return true;
} else {
throw new Meteor.Error("some error message");
}
}
});
Allowing CRUD operations.
if above method doesnt work, try allowing CRUD operations for that collections from server block. Here is documentation.