Smart Tech for a better Web
I have to admit, I was looking long time at Ruby. I even started to script a few lines and liked it, but I never tried to get really into it. Today I changed mind, as I have a new project upcoming and the collegs are using Ruby. With an other project in mind, I installed Jekyll and started to create a few static pages with it. Installation was easy and straightforward, I was impressed. But soon I found out I need a plugin. And as Jekyll is a Ruby program, I needed to code in Ruby.
Basically my first “serious” lines of code was plugin, which would take a list of known Jekyll pages and returns it if it would match the first tokens of a String. In other terms, I want a list of pages which are in the same subfolder.
The Jekyll tag toc which I planned to create should return all the URLs matching a specific portion, in my case “book”.
The tag should look like:
Whenever I write this into my template, the table of content should appear. Thanks to the easy Jekyll plugin architecture and it’s docs I got easily into it. This is my plugin:
Then I create a class within the module Jekyll. I learned about instance variables, prefixed with @. And of course that the return keyword is in some cases optional (the last statement is returned by default, cool stuff). Within the initialize method I get the String I want to use as a folder. Please take care: white spaces and line endings included. Therefore I need my custom starts_with method, which does call the “strip” method on my String, which removes the crap. It took me a while to find that out, until I learned about:
The first line showed me I had the correct types to compare (String). But the second line showed me there was an invisible character: whitespace. It drove me nuts, until I found out. But actually it is pretty easy so far, but of course you need to learn about it first.
Another confusing thing is that Rubyists use ? and ! in their method names. I was pretty confused, because I thought they have a special meaning. It seems it has not.
Well, it took me a good while to code, but I like Ruby so far. Glad I have invested some time now and will look into my future project with a smile. And yes, I think Jekyll is a fantastic tool: I learned it so quickly, that I even don’t bother to write much about it now :-)
Now I need to improve my plugin to return page names as link, but this is easy going.