Template.onRendered can't access 'this._id'

help
1

I’m working on a website, and I’m trying to run some code once the template is rendered. I have tested it with console.log and it runs it once the template is rendered, but I’m using iron:router and I don’t know how to access this._id.

The routing code is as follows:

Router.route('/play/:_id', {
template: 'example',
data: function(){
    var currentItem = this.params._id;
    return mydb.findOne({ _id: currentItem });

  }
}

I’m trying to use ‘this’ to get information from the database about the page that I’m on. For example, my collection has a field named ‘name’. I’m trying to access it using ‘this.name’

And here’s the code for the onRendered function:

Template.example.onRendered(function() {
   console.log("before");
   console.log(this.name);
});

It logs before, but returns null on this.name.
Any help is appreciated greatly :slight_smile:

2

try this.data._id and this.data.name and just this.data

3

With that, I get the error

TypeError: this.data is null

in the console.

4

However when I just use console.log(this) (I forgot to add this in my last post) I get

 Object { view: Object, data: null, firstNode: <div.infotab.fademein>, lastNode: <div.tools.fademein>, _allSubsReadyDep: Object, _allSubsReady: false, _subscriptionHandles: Object }

written out into the console.

5

Make sure you are “populating” that template correctly

6

Sorry, I’m new, what do you mean exactly?

7

try this

you should see if those variable are properly set.

in your Template.example.onRendered I’m pretty sure you should use this.data.SOMETHING

8

Tested it - the variables are properly set, though I’m not sure I should this.data, as I have some template events that occur when a key is pressed, and they can access the database through this.SOMETHING just fine…

9

in a event

Template.example.events({
"keypress: function(){
console.log(this.SOMETHING); // in here this.SOMETHING is fine
}
});

Template.example.onRendered(function(){
console.log(this.data.SOMETHING); // here is different
});

if the variable is properly set in your router there is something wrong how you call that template… but I don’t see it from here

10

I see - thanks for all the help :slight_smile:

11

In event callbacks you actually get the event and template in the parameters of the callback

Template.example.events({
 'keypress input': function(event, template) {
  // code
 }
});

as for onRendred, you need to make sure that your subscription is ready when it gets called or data will be empty

12

Do you have a suggested method of delaying when the template gets called?