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Leading every article on rimdev.io is a heart rate icon (hover over it for our rating scale). Doesn’t seem that difficult, so how did we get there using Jekyll?
Get values for today and posted; subtract posted from today. If you’re new to liquid syntax, it’s the minus pipe.
{% capture today %}{{ "now" | date: "%s" }}{% endcapture %}
{% capture posted %}{{ page.date | date: "%s" }}{% endcapture %}
{% capture freshness %}{{ today | minus: posted | date: "%s" | date: "%j" | floor }}{% endcapture %}
So this worked great, we had our freshness date, right? What about articles a post dated for the same day, today? Let’s see if they’re the same day of the year %j (1-365). Note freshness | times: 1, freshness is a string until here.
{% capture compareToday %}{{ today | date: "%j" | floor }}{% endcapture %}
{% capture comparePosted %}{{ posted | date: "%j" | floor }}{% endcapture %}
{% if compareToday == comparePosted %}
{% assign freshness = 0 %}
{% else %}
{% assign freshness = freshness | times: 1 %}
{% endif %}
From here, we assigned classes to determine freshness, you can handle it how you see fit!
{% if freshness <= 30 %}
{% assign class = "new" %}
{% endif %}
{% if freshness > 31 and freshness < 190 %}
{% assign class = "old" %}
{% endif %}
{% if freshness > 191 and freshness < 364 %}
{% assign class = "stale" %}
{% endif %}
{% if freshness > 365 %}
{% assign class = "rubbish" %}
{% endif %}
