Select item select box that matches the passed value.

list-template.html

<template name="example">
  <select class="form-control" name="select">
    {{#each teams}}
      <!-- 
        Here, ../team (../ is a Handlebars convention for traversing template scope) allows us to get the team 
        value from the parent template (i.e. {{team}}). this._id allows us to get the _id value of the current 
        item being iterated, or in this example, the _id of the current team. Our UI helper matches the current 
        team against the current option, if they match, that option is displayed as selected in the select box.
      -->
      <option {{selectOption ../team this._id}} value="{{_id}}">{{name}}</option>
    {{/each}}
  </select>
</template>

ui-helpers.coffee

# Select Option
# Marks an option in a select as selected if the option and value match.

UI.registerHelper 'selectOption', (option,value)->
  if option == value then 'selected' else ""