Desarrollo y Mantenimiento de Sistemas Informáticos

4º. 1er cuatrimestre. Itinerario de Sistemas de la Información. Grado en Ingeniería Informática. ULL

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Now you have to test your site locally and to deploy it in production. Sometimes, the baseurl is different and the jekyll build may not work out of the box in one of those environment.

We need to understand site.url and site.baseurl and page.path and in which situation we need them. Those variables don’t serve the same purpose.

site.url

site.url is typically used in conjunction with site.baseurl when you want a link to something with the full URL to it.

For example, in the page head for the canonical header and the RSS link. It’s also used in the xml feed to point to site resources as the software that will manage this feed doesn’t know resource’s urls.

site.baseurl

site.baseurl indicates the root folder of your Jekyll site. By default it is set to "" (empty string). That means that your Jekyll site is at the root of https://example.com.

If your Jekyll site lives in https://example.com/blog, you have to set site.baseurl to /blog (note the slash!). This will allow assets (css, js) to load correctly.

See how assets must be loaded in your head section:

<link rel="stylesheet" href="{{ site.baseurl }}/css/main.css">

or, more verbose:

<link rel="stylesheet" href="{{ "/css/main.css" | prepend: site.baseurl }}">

Use jekyll serve

Let’s imagine that your site lives in a github repository introduction inside an organization ULL-ESIT-PL-1819:

$ git remote -v
origin	git@github.com:ULL-ESIT-PL-1819/introduccion.git

and is served at GitHub at the url: https://ull-esit-pl-1819.github.io/introduccion/.

You can setup the baseurl to /introduccion and test your site locally with jekyll serve, your site will be served at https://127.0.0.1:4000/introduccion/

Use multiple configuration files

If, for one reason or another, you cannot use jekyll serve, you can set a configuration file for both environment and jekyll build depending on where you are deploying.

Let’s say we have the local site served at https://localhost and the production site served at https://username.github.io/myProject.

We leave the _config.yml with

url: https://username.github.io
baseurl: /myProject

We create a new _config_dev.yml with only

url: https://localhost 
baseurl: ""

Now to test locally :

jekyll build --config _config.yml,_config_dev.yml

or

jekyll build --config _config.yml,_config_dev.yml --watch

When pushed on production, the jekyll build command will use the default _config.yml.