liquid - Check for existence of file using Jekyll -


how can use jekyll test existence of file?

to clarify, want run {% if %} statement check if image file exists same name page on.

on page in yaml front matter:

----   reference-design: true ----

in layout:

{% if page.reference-design %}     {% assign filename = page.path | remove_first: '.html' %}     <!-- how can check if file exists? -->     <img src="images/reference_designs/{{ filename }}.png"> {% endif %}

as of jekyll 2, site files available via site.static_files. can use check if file exists. example:

{% static_file in site.static_files %}     {% if static_file.path == '/favicon.ico' %}         {% assign favicon = true %}     {% endif %} {% endfor %}

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