CODEWITHSUNDEEP
javascriptmongodbmeteor
Ian Wise
Ian Wise

Reputation: 766

Cannot get meteor.js to return mongo collection

So I am trying to return a mongoDB database value to a template in my Meteor.js project. The code that I am using is below.

Template.ResourceManager.helpers({
BoosterOneFuel : function(){
        return resources.findOne({system : "booster1"}).fuel;
}

});

However, this always returns null. When I try to alert it, the alert also says that this value is null. Mongo can find it when I run this line in the console while running meteor mongo:

db.Resources.findOne({system : "booster1"}).fuel;

But meteor cannot. (This is on a localhost, so meteor mongo should affect meteor's database)

I don't think its a problem with meteor loading before mongo does, because the following still doesn't work :

if(resource.find({system : "booster1"}))
     alert(resources.findOne({system : "booster1"}).fuel);

Anybody know whats going on here? Thanks in advance.

Upvotes: 1

Views: 825

Answers (1)

David Weldon
David Weldon

Reputation: 64312

Assuming the collection is actually called resources - i.e. you have something that looks like:

resources = new Mongo.Collection('Resources');

Then it sounds like you just need to publish the documents to the client:

server/publishers.js

Meteor.publish('resources', function() {
  return resources.find();
});

client/subscriptions.js

Meteor.subscribe('resources');

Of course the subscription could happen in your template or router instead of globally, but that's beyond the scope of this question.

Also note you should add a guard to your helper. For example:

Template.ResourceManager.helpers({
  BoosterOneFuel : function() {
    var b1 = resources.findOne({system : "booster1"});
    return b1 && b1.fuel;
  }
});

Upvotes: 4

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