111 lines
3.1 KiB
HTML
111 lines
3.1 KiB
HTML
<!--
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Recommend the other 3 posts according to the tags and categories of the current post,
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if the number is not enough, use the other latest posts to supplement.
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v2.0
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https://github.com/cotes2020/jekyll-theme-chirpy
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© 2019 Cotes Chung
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Published under the MIT License
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-->
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<!-- The total size of related posts -->
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{% assign TOTAL_SIZE = 3 %}
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<!-- An random integer that bigger than 0 -->
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{% assign TAG_SCORE = 1 %}
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<!-- Equals to TAG_SCORE / {max_categories_hierarchy} -->
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{% assign CATEGORY_SCORE = 0.5 %}
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{% assign SEPARATOR = ":" %}
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{% assign score_list = "" | split: "" %}
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{% assign last_index = site.posts.size | minus: 1 %}
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{% for i in (0..last_index) %}
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{% assign post = site.posts[i] %}
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{% if post.url == page.url %}
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{% continue %}
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{% endif %}
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{% assign score = 0 %}
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{% for tag in post.tags %}
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{% if page.tags contains tag %}
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{% assign score = score | plus: TAG_SCORE %}
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{% endif %}
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{% endfor %}
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{% for category in post.categories %}
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{% if page.categories contains category %}
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{% assign score = score | plus: CATEGORY_SCORE %}
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{% endif %}
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{% endfor %}
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{% if score > 0 %}
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{% capture score_item %}{{ score }}{{ SEPARATOR }}{{ i }}{% endcapture %}
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{% assign score_list = score_list | push: score_item %}
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{% endif %}
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{% endfor %}
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{% assign index_list = "" | split: "" %}
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{% if score_list.size > 0 %}
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{% assign score_list = score_list | sort | reverse %}
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{% for entry in score_list limit: TOTAL_SIZE %}
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{% assign index = entry | split: SEPARATOR | last %}
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{% assign index_list = index_list | push: index %}
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{% endfor %}
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{% endif %}
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<!-- Fill with the other newlest posts -->
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{% assign less = TOTAL_SIZE | minus: index_list.size %}
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{% if less > 0 %}
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{% for i in (0..last_index) %}
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{% assign post = site.posts[i] %}
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{% if post.url != page.url %}
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{% capture cur_index %}{{ i }}{% endcapture %}
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{% unless index_list contains cur_index %}
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{% assign index_list = index_list | push: cur_index %}
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{% assign less = less | minus: 1 %}
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{% if less <= 0 %}
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{% break %}
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{% endif %}
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{% endunless %}
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{% endif %}
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{% endfor %}
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{% endif %}
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{% if index_list.size > 0 %}
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<div id="related-posts" class="mt-5 mb-2 mb-sm-4">
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<h3 class="pt-2 mt-1 mb-4 ml-1" data-toc-skip>{{ site.data.label.post.relate_posts }}</h3>
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<div class="card-deck mb-4">
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{% for entry in index_list %}
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{% assign index = entry | plus: 0 %}
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{% assign post = site.posts[index] %}
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<div class="card">
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<a href="{{ post.url | relative_url }}">
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<div class="card-body">
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{% include timeago.html date=post.date class="small" %}
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<h3 class="pt-0 mt-1 mb-3" data-toc-skip>{{ post.title }}</h3>
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<div class="text-muted small">
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<p>
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{% include no-linenos.html content=post.content %}
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{{ content | markdownify | strip_html | truncate: 200 }}
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</p>
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</div>
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</div>
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</a>
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</div>
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{% endfor %}
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</div> <!-- .card-deck -->
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</div> <!-- #related-posts -->
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{% endif %}
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