pelican-bootstrap3/templates/includes/twitter_cards.html


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{% if TWITTER_CARDS and USE_OPEN_GRAPH %}
    {# Do not include duplicates tag with og ones. #}
    {# Twitter is able to infer them from og. #}
    <meta name="twitter:card" content="summary">
    {% if TWITTER_USERNAME %}
        <meta name="twitter:site" content="@{{ TWITTER_USERNAME }}">
        <meta name="twitter:creator" content="@{{ TWITTER_USERNAME }}">
    {% endif %}
    <meta name="twitter:domain" content="{{ SITEURL }}">
    {% if article %}
        {% if article.og_image %}
            <meta property="twitter:image"
                  content="{{ SITEURL }}/{{ article.og_image }}"/>
        {% elif OPEN_GRAPH_IMAGE %}
            <meta property="twitter:image"
                  content="{{ SITEURL }}/{{ OPEN_GRAPH_IMAGE }}"/>
        {% endif %}
    {% elif page %}
        {% if page.og_image %}
            <meta property="twitter:image"
                  content="{{ SITEURL }}/{{ page.og_image }}"/>
        {% elif OPEN_GRAPH_IMAGE %}
            <meta property="twitter:image"
                  content="{{ SITEURL }}/{{ OPEN_GRAPH_IMAGE }}"/>
        {% endif %}
    {% endif %}
{% endif %}