Add reading time in Cobalt
I wanted to add an approximate reading time to each of my blog posts, like those seen in medium posts. There's a lot of really nice javascript libraries out that, but I kinda figured this defeat the whole purpose of using a static site generator.
I was also looking for an excuse to use liquid (the template rendering engine for Cobalt).
It's a fairly simplistic approach, perform a word count and divide by 200 which is the average of words read per min.
{% assign reading_wpm = 200 %}
{% assign word_count = page.content | split: " " | size %}
{% assign reading_time = word_count | divided_by: 200 %}
{% case reading_time %}
{% when 0 %}
{% assign phrase = "less than a minute." %}
{% when 1 %}
{% assign phrase = "about a minute." %}
{% else %}
{% assign phrase = " minutes." | prepend: reading_time %}
{% endcase %}
Reading time: {{ phrase }}