Answers.Body: <p>You can use PHP's sprintf function via [the format filter in Twig].<a href="https://twig.symfony.com/doc/2.x/filters/format.html" rel="noreferrer">1</a></p>
  
  <p>So to add a leading zero to single digit numbers:</p>
  
  <p><code>{{ "%02d"|format('4') }}</code></p>
  
  <p>Which would return <code>04</code></p>
  
  <hr>
  
  <p>Or in your case <code>{{ "%02d"|format(entry.episodeNumber) }}</code></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-12-29T15:09:47.120Z
Answers.LastActivityDate: 2018-12-29T15:09:47.120Z
Answers.UserDisplayName: James Greig
Answers.Body: <p>There aren't any filters built in to Craft (or Twig) that does this, but your <code>{% if %}</code> conditional could be trimmed down to a single-line <em>ternary operation</em>:</p>
  
  <pre><code>{% set episodeNumber = (entry.episodeNumber &lt; 10 ? '0') ~ entry.episodeNumber %}
  </code></pre>
  
  <p>or even</p>
  
  <pre><code>&lt;span&gt;{{ (entry.episodeNumber &lt; 10 ? '0') ~ entry.episodeNumber }}&lt;/span&gt;
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-12-26T16:09:36.527Z
Answers.LastActivityDate: 2018-12-28T11:09:36.240Z
Answers.LastEditDate: 2018-12-28T11:09:36.240Z
Answers.UserDisplayName: Mats Mikkel Rummelhoff
Body: <p>I have a number field used for episode numbers and I would like to automatically add a leading zero when the number is less than 10. I have this working with a conditional but it seems inefficient. Is there a twig filter that I don't know about that does this?</p>
  
  <pre><code>{% if entry.episodeNumber &lt; "10" %}
      {% set episodeNumber = '0' ~ entry.episodeNumber %}
  {% else %}
      {% set episodeNumber = entry.episodeNumber %}
  {% endif %}
  </code></pre>
  
  <p>The above works but seems overly long to accomplish what should be a simple task.</p>
  
Tags: <templating>
Title: Add a Leading Zero with a number field
ThreadText: # Add a Leading Zero with a number field
  
  (Asked by: username_0 on 2018-12-26)
  
  I have a number field used for episode numbers and I would like to automatically add a leading zero when the number is less than 10. I have this working with a conditional but it seems inefficient. Is there a twig filter that I don't know about that does this?
  
  ```
  {% if entry.episodeNumber < "10" %}
      {% set episodeNumber = '0' ~ entry.episodeNumber %}
  {% else %}
      {% set episodeNumber = entry.episodeNumber %}
  {% endif %}
  
  ```
  
  The above works but seems overly long to accomplish what should be a simple task.
  
  **Tags:** templating
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2018-12-26. Score: 7 | Accepted answer
  
  There aren't any filters built in to Craft (or Twig) that does this, but your `{% if %}` conditional could be trimmed down to a single-line *ternary operation*:
  
  ```
  {% set episodeNumber = (entry.episodeNumber < 10 ? '0') ~ entry.episodeNumber %}
  
  ```
  
  or even
  
  ```
  <span>{{ (entry.episodeNumber < 10 ? '0') ~ entry.episodeNumber }}</span>
  
  ```
  
  
  ---
  
  ### Answer by username_1 on 2018-12-29. Score: 7
  
  You can use PHP's sprintf function via [the format filter in Twig].[1](https://twig.symfony.com/doc/2.x/filters/format.html)
  
  So to add a leading zero to single digit numbers:
  
  `{{ "%02d"|format('4') }}`
  
  Which would return `04`
  
  ---
  
  Or in your case `{{ "%02d"|format(entry.episodeNumber) }}`
  
  
  ---
  
  