relift-html/docs/templates/macros/meta.html

A blazing fast view library that lets you put Javascript Template Literals in HTML

{# ----------------------------- MACROS ------------------------------------- #}
{# This file contains all meta macros to be used. You can also define your own #}
{# -------------------------------------------------------------------------- #}

{# meta_tag_custom: create a custom meta tag 
    @params
    namespace
    name
    value    
#}
{% macro meta_tag_custom(namespace, name, value) %}
    <meta {{ namespace }}="{{ name }}" content="{{ value or '' | safe }}">
{% endmacro %}

{# meta_tag: create a meta tag 
    @params
    name
    value    
#}
{% macro meta_tag(name, value) %}
    {{ meta_tag_custom('name', name, value) }}
{% endmacro %}


{# meta_page_meta_tags: Set all the meta tags in the page  
#}
{% macro meta_page_meta_tags() %}
    {% for k, v in page.meta.items() %}
        {{ meta_tag(k, v) }}
    {% endfor %}
    {% set url =  site.base_url + page.url %}
    {{ meta_tag_custom('property', 'og:title', page.title or '') }}
    {{ meta_tag_custom('property', 'og:description', page.description or '') }}
    {{ meta_tag_custom('property', 'og:url', url) }}
    {{ meta_tag_custom('property', 'og:site_name', site.name or '') }}
    {{ meta_tag_custom('property', 'og:type', page.meta.object_type or 'article') }}
    {{ meta_tag_custom('itemprop', 'description', page.description or '') }}
    {{ meta_tag_custom('itemprop', 'name', page.title or '') }}
    {{ meta_tag_custom('itemprop', 'url', url) }}
    {{ meta_tag_custom('name', 'twitter:title', page.title or '') }}
    {{ meta_tag_custom('name', 'twitter:description', page.description or '') }}
    {{ meta_tag_custom('name', 'twitter:url', url) }}

    {% if not page.image %}
        {{ meta_tag_custom('name', 'twitter:card', "summary") }}
    {% endif %}

    {% if page.image %}
        {{ meta_tag_custom('property', 'og:image', page.image) }}
        {{ meta_tag_custom('itemprop', 'image', page.image) }}
        {{ meta_tag_custom('name', 'twitter:image', page.image) }}
        {{ meta_tag_custom('name', 'twitter:card', "summary_large_image") }}
    {% endif %}
{% endmacro %}



{# meta_page_title: Set the page title. Leave title empty to fallback to default
    @params
    title
    suffix
    separator    
#}
{% macro meta_page_title(title=None, suffix=None, separator='|') %}
    <title>{{ title or page.title or '' }} {{ separator }} {{ suffix or site.name }}</title>
    {{ meta_tag('title', title or page.title or '') }}
    <link rel="canonical" href="{{ site.base_url }}"/>
{% endmacro %}



{# meta_page_description: Set the page description. Leave description empty to fallback to default
    @params
    description    
#}
{% macro meta_page_description(description=None) %}
    {{ meta_tag('description', description or page.description or site.description or '') }}
{% endmacro %}