Enhanced the related posts.

If the number of related posts is less than 3, use the latest posts to supplement.
This commit is contained in:
Cotes Chung 2020-06-04 22:01:59 +08:00
parent 3caafbd50d
commit eff2a24f4c

View file

@ -1,53 +1,94 @@
<!--
The related posts of current post.
Placed in the bottom of every single post.
Recommend the other 3 posts according to the tags and categories of the current post,
if the number is not enough, use the other latest posts to supplement.
v2.0
https://github.com/cotes2020/jekyll-theme-chirpy
© 2019 Cotes Chung
Published under the MIT License
-->
{% assign MAX_SIZE = 3 %}
<!-- The total size of related posts -->
{% assign TOTAL_SIZE = 3 %}
<!-- An random integer that bigger than 0 -->
{% assign TAG_SCORE = 1 %}
<!-- Equals to TAG_SCORE / {max_categories_hierarchy} -->
{% assign CATEGORY_SCORE = 0.5 %}
{% assign SEPARATOR = ":" %}
{% assign score_list = "" | split: "" %}
{% assign post_index = 0 %}
{% assign last_index = site.posts.size | minus: 1 %}
{% for post in site.posts %}
{% if post.url != page.url %}
{% assign score = 0 %}
{% for tag in post.tags %}
{% if page.tags contains tag %}
{% assign score = score | plus: TAG_SCORE %}
{% endif %}
{% endfor %}
{% for category in post.categories %}
{% if page.categories contains category %}
{% assign score = score | plus: CATEGORY_SCORE %}
{% endif %}
{% endfor %}
{% if score > 0 %}
{% capture score_item %}{{ score }}:{{ post_index }}{% endcapture %}
{% assign score_list = score_list | push: score_item %}
{% endif %}
{% for i in (0..last_index) %}
{% assign post = site.posts[i] %}
{% if post.url == page.url %}
{% continue %}
{% endif %}
{% assign post_index = post_index | plus: 1 %}
{% assign score = 0 %}
{% for tag in post.tags %}
{% if page.tags contains tag %}
{% assign score = score | plus: TAG_SCORE %}
{% endif %}
{% endfor %}
{% for category in post.categories %}
{% if page.categories contains category %}
{% assign score = score | plus: CATEGORY_SCORE %}
{% endif %}
{% endfor %}
{% if score > 0 %}
{% capture score_item %}{{ score }}{{ SEPARATOR }}{{ i }}{% endcapture %}
{% assign score_list = score_list | push: score_item %}
{% endif %}
{% endfor %}
{% assign index_list = "" | split: "" %}
{% if score_list.size > 0 %}
{% assign score_list = score_list | sort | reverse %}
{% assign count = 0 %}
{% for entry in score_list limit: TOTAL_SIZE %}
{% assign index = entry | split: SEPARATOR | last %}
{% assign index_list = index_list | push: index %}
{% endfor %}
{% endif %}
<!-- Fill with the other newlest posts -->
{% assign less = TOTAL_SIZE | minus: index_list.size %}
{% if less > 0 %}
{% for i in (0..last_index) %}
{% assign post = site.posts[i] %}
{% if post.url != page.url %}
{% capture cur_index %}{{ i }}{% endcapture %}
{% unless index_list contains cur_index %}
{% assign index_list = index_list | push: cur_index %}
{% assign less = less | minus: 1 %}
{% if less <= 0 %}
{% break %}
{% endif %}
{% endunless %}
{% endif %}
{% endfor %}
{% endif %}
{% if index_list.size > 0 %}
<div id="related-posts" class="mt-4 mb-2 mb-sm-4 pb-2">
<h3 class="pt-2 mt-1 mb-4 ml-1" data-toc-skip>{{ site.data.label.post.relate_posts }}</h3>
<div class="card-deck mb-4">
{% for score_item in score_list %}
{% assign data = score_item | split: ":" %}
{% assign index = data[1] | plus: 0 %}
{% for entry in index_list %}
{% assign index = entry | plus: 0 %}
{% assign post = site.posts[index] %}
<div class="card">
<a href="{{ post.url | relative_url }}">
@ -65,11 +106,7 @@
</div>
</a>
</div>
{% assign count = count | plus: 1 %}
{% if count >= MAX_SIZE %}
{% break %}
{% endif %}
{% endfor %}
</div> <!-- .card-deck -->
</div>
{% endif %}
</div> <!-- #related-posts -->
{% endif %}