{% load absolute_url %}

<meta property="og:title" content="{{ object.title }}" />
<meta property="og:site_name" content="{{ site.name }}" />
<meta property="og:type" content="article" />
<meta property="og:url" content="{{ request.build_absolute_uri }}" />
{% if object.featured_image_file %}
<meta property="og:image" content="{{ object.featured_image_file.url|absolute_url:request }}" />
{% endif %}
<meta property="article:published_time" content="{{ object.publication_date|date:"c" }}" />