<p>you can check if the plugin is installed and enabled with:</p>

<pre><code>{% if craft.app.plugins.isPluginEnabled('assetrev') %}
  {% set fileName = rev(file) %}
{% else %}
  {% set fileName = file %}
{% endif %}
</code></pre>

<p>you won't need the extra check <code>craft.app.plugins.isPluginInstalled('assetrev')</code> then.</p>

<p><a href="https://docs.craftcms.com/api/v3/craft-services-plugins.html#method-ispluginenabled" rel="nofollow noreferrer">isPluginEnabled()</a>:</p>

<blockquote>
  <p>Returns whether a given plugin is installed and enabled.</p>
</blockquote>

CC BY-SA 4.0
2019-06-27T06:33:44.497Z
true, but using `rev` in templates still causes error.
Piotr Pogorzelski
CC BY-SA 4.0
2019-06-27T05:46:51.677Z
2019-06-27T05:46:51.677Z
HendrikEng
<p>I want to use <a href="https://github.com/clubstudioltd/craft-asset-rev" rel="nofollow noreferrer">asset rev</a> in my template, but only if plugin is installed and enabled:</p>

<pre><code>    {% if craft.app.plugins.getPlugin('assetrev') is not null and craft.app.plugins.getPlugin('assetrev').isInstalled %}
        {% set fileName = rev(file) %}
    {% else %}
        {% set fileName = file %}
    {% endif %}
</code></pre>

<p>Hovewer when i disable plugin, mere existence of <code>rev</code> function in my template, still causes error.</p>

<templating><plugins>
Use function provided by plugin only if plugin is installed and enabled
# Use function provided by plugin only if plugin is installed and enabled

(Asked by: username_0 on 2019-06-26)

I want to use asset rev in my template, but only if plugin is installed and enabled:
    {% if craft.app.plugins.getPlugin('assetrev') is not null and craft.app.plugins.getPlugin('assetrev').isInstalled %}
        {% set fileName = rev(file) %}
    {% else %}
        {% set fileName = file %}
    {% endif %}

Hovewer when i disable plugin, mere existence of rev function in my template, still causes error.

**Tags:** templating, plugins

---

## 1 answers

### Answer by username_1 on 2019-06-27. Score: 1

you can check if the plugin is installed and enabled with:
{% if craft.app.plugins.isPluginEnabled('assetrev') %}
  {% set fileName = rev(file) %}
{% else %}
  {% set fileName = file %}
{% endif %}

you won't need the extra check craft.app.plugins.isPluginInstalled('assetrev') then.
isPluginEnabled():

Returns whether a given plugin is installed and enabled.

> **Comments:**
> **username_0**: true, but using `rev` in templates still causes error.  

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