website/www/conservancy/templates/opengraph_urllist_partial.html

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{% comment %}
Include this partial in a head section to include a series of URLs for a
given property, like og:image or og:video.
You must pass the following variables:
* property: A string with the name of the property, like 'image' or 'video'.
* urls: A sequence of URL strings. Each should include at least an absolute
path. This partial will fill in a scheme and host if needed.
You may also pass:
* fallback: A URL string, following the same rules as in `urls`. This URL
will be used if `urls` is empty.
{% endcomment %}
{% load fill_url %}
{% for url in urls %}
<meta property="og:{{ property }}" content="{{ url|fill_url:host_url }}">
{% empty %}
{% if fallback %}
<meta property="og:{{ property }}" content="{{ fallback|fill_url:host_url }}">
{% endif %}
{% endfor %}