title: Show &nbsp if value empty
body: <p>I need to show a non-breaking space in a <code>table</code> cell if a value is empty. This is my template:</p>
  
  <pre><code>&lt;td class="licnum"&gt;{{participant.LicenseNumber}}&lt;/td&gt;
  </code></pre>
  
  <p>I've tried this, but it doesn't work:</p>
  
  <pre><code>&lt;td class="licnum"&gt;{{participant.LicenseNumber} || "$nbsp;"}&lt;/td&gt;
  </code></pre>
  
  <p>Here's the problem with it returning <code>null</code> values:</p>
  
  <p><img src="https://i.stack.imgur.com/ntzWV.png" alt="enter image description here"></p>
  
  <p>If License Number comes over with <code>null</code> value, the cell is empty and the row coloring looks like this.</p>
  
  <p>Using lucuma's suggestion, it shows this:</p>
  
  <p><img src="https://i.stack.imgur.com/f7jK4.png" alt="enter image description here"></p>
  
  <p>After changing the if statement in the filter, still doesn't show non-<code>null</code> values:</p>
  
  <p><img src="https://i.stack.imgur.com/UQCLv.png" alt="enter image description here"></p>