Referencing a property of a different object in Handlebars

halindrome

I hope this doesn't come across as too stupid. In a data structure from our REST API we get back a big collection if JSON. In one part of this we have information like this:

'foo': [
  { 'id': integer,
    'time': integer },
  { 'id': otherInteger,
    'time': otherInteger}
  ],
  'bar' : string,
  'bat': otherString

You get the idea. Then in some other part of the JSON we have information that map to the 'id' values in the Array above.

  mappings: {
    'someId' : {
      'name' : 'someName',
      'description': 'string about name'
    },
    'nextId': { ... }
  }

In my template, what I want to do is iterate over the foo Array, but when displaying information about each item in that array, extract the information from the mappings object. I was attempting something like:

{{#each foo}}
<h2>Location: {{lookup ../mappings id name}}</h2>
{{/each}}

But that's not quite right. How can I use the value of the id property from each of the foo objects to lookup another object in mappings and then do things with the properties of THAT object?

halindrome

I think I just answered my own question. You can 'nest' helper calls like lookup, so I am now doing this:

{{#each foo}}
<h2>Location: {{lookup (lookup ../mappings id) 'name' }}</h2>
{{/each}}

Seems to work. Hope this helps someone else!