File Exists is a plugin for the Grav CMS that allows to check the existance of a file in the filesystem without adding PHP code to your template.

To install this plugin, just download the zip version of this repository and unzip it under /your/site/grav/user/plugins. Then, rename the folder to file_exists.

You should now have all the plugin files under

/your/site/grav/user/plugins/file_exists

NOTE: This plugin is a component for Grav which requires Grav and a theme to be installed in order to operate.

enabled: true

In your Twig template use file_exists() to test for the existance of files. The plugin returns a boolean value:

• true if the specified file exists
• fals if it does not exist

Display _header.jpg if it exists in folder of current page:

{# Needs plugin "File Exists" (https://github.com/noppingen/grav-plugin-file_exists) #}
{% set current_path = page.path() %}
{% if file_exists(current_path ~ "/_header.jpg") %}
 <img title='Header - {{ page.title }}' src='{{ page.url }}/_header.jpg'>
{% endif %}

More information (German): https://www.onderka.com/computer-und-netzwerk/grav-plugin-file_exists