Adding reading time to your postJan 29, 2019 - 2 min read
Adding a reading time calculation to your rails app is pretty straight forward. In my example i create it as a shared method across multiple models. If you only want to add it to your blog post, you can get away with adding the method to your blog.rb file.
First off, create a content_util.rb file under models/concerns
Since its a shared method between content (blog, guides and resources) this is where it belongs. If you only have 1 model, you can just add it under that current model.
module ContentUtil extend ActiveSupport::Concern def reading_time(text) (text.split.size / 180.0).ceil endend
The method takes 1 argument, text. Then the split.size method is called on the string or text, which split up the words and counts them. They are divided by 180, which is the average number of words a human reads. Some says it's more, but for technical articles its a good fit.
The .ceil method will return the smallest integer greater or equal to the float.
So what happens is that it will return a clean number, like 5 or even 1 if its a short post. https://ruby-doc.org/core-2.2.0/Float.html#method-i-ceil
Inside the models where you want to use the method, include the module
And you can now call the method in your view like this:
<%= item.reading_time(item.body) %>