Module: ReadTimeFilter
- Defined in:
- lib/read_time.rb
Overview
Installation: drop this into your _plugins folder Usage: page.content | read_time } Note: this requires img tags to be in the form of <img … />. If you're using this on a post listing page, make sure to markdownify the post content first.
Instance Method Summary collapse
Instance Method Details
#read_time(input) ⇒ Object
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# File 'lib/read_time.rb', line 10 def read_time(input) words_per_minute = 275 # number of seconds per image to start at, default is 12s img_time_max = 12 # time per image will decrease by 1 for every image, to a minimum # of this time, default is 3s img_time_min = 3 strings = input.split(/<img.* \/>/) seconds = (strings.join(" ").split.size.to_f / (words_per_minute / 60)) # number of images minus one for correct number of iterations (strings.size - 2).times do |i| t = (img_time_max - i) image_time = t > img_time_min ? t : img_time_min seconds = seconds + image_time end minutes = (seconds / 60).ceil "#{minutes} min read" end |