Is there a way to pass variables into templates in Meteor?

Question

I've been experimenting with Meteor and ran into something I couldn't figure out. For fun, I was trying to make a slot machine. I had the following HTML:

<div class="slot-wrapper">
  {{> slot}}
  {{> slot}}
  {{> slot}}
</div>

<template name="slot">
  <div class="slot">
    <div class="number"><span>{{ number }}</span></div>
    <div class="divider"></div>
  </div>
</template>

I want to have a different number for each slot. Is it possible to pass variables into template? Something like this:

<div class="slot-wrapper">
  {{> slot 1}}
  {{> slot 2}}
  {{> slot 3}}
</div>

<template name="slot">
  <div class="slot">
    <div class="number"><span>{{ number i}}</span></div>
    <div class="divider"></div>
  </div>
</template>

Maybe I'm thinking about this the wrong way and there's a better way.

Answer 1

All of the previous answers are overkill or outdated. Here's how you can pass static parameters into templates, directly from HTML+Spacebars code, as of Meteor 0.8.x:

<div class="slot-wrapper">
  {{> slot number="1"}}
  {{> slot number="2"}}
  ...
</div>

<template name="slot">
  <div class="number"><span>{{number}}</span></div>
</template>

All you have to do is pass key="value" parameters in the {{> template}} inclusion call:

{{> slot number="1"}}

Learn more at Spacebars Secrets: Exploring Meteor Templates.

---

If you want to pass the caller template's data to the child/nested/called template, here's how to do it: pass nothing. Instead, from the nested template, access the parent data context, ../:

<div class="slot-wrapper">
  {{> slot number="1"}}
  {{> slot number="2"}}
  ...
</div>

<template name="slot">
  <div>Machine name: {{../name}}</div>
  <div class="number"><span>{{number}}</span></div>
</template>