title: Simple Ember.js Input Syntax
body: <p>I'm seeing conflicting within the ember guides on how to go about actions syntax on an <code>{{input}}</code> helper. I'm referring to the <code>key-press</code> and <code>key-up</code> parameters.</p>
  
  <p><a href="https://guides.emberjs.com/v2.13.0/templates/input-helpers/#toc_actions" rel="nofollow noreferrer">This section</a> shows it without parenthesis as such:</p>
  
  <p><code>{{input value=firstName key-press="updateFirstName"}}</code></p>
  
  <p>Yet <a href="https://guides.emberjs.com/v2.13.0/tutorial/autocomplete-component/" rel="nofollow noreferrer">here</a> (with the code snippet titled "app/templates/components/list-filter.hbs"), it does use parenthesis as such:</p>
  
  <p><code>{{input value=value key-up=(action 'handleFilterEntry') class="light" placeholder="Filter By City"}}</code></p>
  
  <hr>
  
  <p>I'm not sure why the API docs leave out the parenthesis but the example puts them in. Any insight appreciated</p>