title: Cannot retrieve field mongoose in client side
body: <p>My simple problem is:</p>
  
  <p>I had an mongoose object at server side:</p>
  
  <pre><code>...
  item = {
    name: "Test",
    id: 1
  }
  </code></pre>
  
  <p>// item was an mongo schema</p>
  
  <p>// id and name was define in model String and Number</p>
  
  <p>Then I add into item new field mentions:</p>
  
  <pre><code>item.mention = [{ id: 1, ... }]
  </code></pre>
  
  <p>But I can't get mention at client side.</p>
  
  <p>My response code:</p>
  
  <pre><code>res.json({ status: 1, message: 'success', data: item })
  </code></pre>
  
  <p>The response was <code>data: { name: "Test", id: 1 }</code></p>
  
  <p>I don't want to add mention into my mongo schema.</p>
  
  <p>So, what's my problem?</p>
  
  <p>How can I fix that?</p>
  
  <p>Thanks!</p>