Categories and tags
When you write a post you can specify a category and some tags to classify
it. You can later list all the posts with a specific tag or in a given category
using the special _tag and _category pages. Those pages are in the regular
_content/pages folder and are just like any other page, except that when
accessed from the correct address, the pagination data passed to them will
only contain the appropriate posts.
The address at which you access tag or category listings is defined in the site
configuration with the tag_url and category_url settings. For example,
if you want tag “food” to be reached at http://domain.com/blog/tag/food, you
could configure your site like this:
site:
tag_url: blog/tag/%tag%
For the tag and category URL settings, the patterns %tag% and %category%,
respectively, must be specified somewhere in the value.
The tag and category variables will be respectively exposed to the template
system for the _tag and _category pages. The value is that of the tag or
category being listed.