From 884713fc2a80f53ee21a225ca1d101e1d1ce336c Mon Sep 17 00:00:00 2001
From: Alan Orth <alan.orth@gmail.com>
Date: Mon, 26 Sep 2016 08:32:46 +0300
Subject: [PATCH] layouts: Add theme support for categories and tags

Add categories/tags to front matter and they will be displayed on
summary and post pages, with links to taxonomy pages. Example:

  +++
  date = "2016-09-24T21:28:31+03:00"
  title = "Post title"
  categories = ["Nature"]
  tags = ["Wetland", "Oasis"]
  +++

For some reason if you add tags singularly, like:

  categories = "Nature"

you get index errors from Hugo. Not sure if I need to parse the
tags differently or just add more logic to test if the terms are
singular or not.
---
 layouts/_default/single.html     | 2 +-
 layouts/_default/summary.html    | 2 +-
 layouts/partials/meta-terms.html | 6 ++++++
 3 files changed, 8 insertions(+), 2 deletions(-)
 create mode 100644 layouts/partials/meta-terms.html

diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 130a81a..1c1b54a 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -3,7 +3,7 @@
       <article class="blog-post">
         <header>
           <h2 class="blog-post-title"><a href="{{ .Permalink }}" title="{{ .Title }}">{{ .Title }}</a></h2>
-          <p class="blog-post-meta"><time datetime="{{ .Date.Format "2006-01-02T15:04:05Z07:00" }}">{{ .Date.Format .Site.Params.date_format }}</time> by <a href="#">{{ .Params.author | default .Site.Params.author }}</a></p>
+          <p class="blog-post-meta"><time datetime="{{ .Date.Format "2006-01-02T15:04:05Z07:00" }}">{{ .Date.Format .Site.Params.date_format }}</time> by <a href="#">{{ .Params.author | default .Site.Params.author }}</a>{{ if or (.Params.categories) (.Params.tags) }} in {{ partial "meta-terms.html" . }}{{ end }}</p>
         </header>
         {{ .Content }}
 
diff --git a/layouts/_default/summary.html b/layouts/_default/summary.html
index 8b35c72..9ca1292 100644
--- a/layouts/_default/summary.html
+++ b/layouts/_default/summary.html
@@ -1,7 +1,7 @@
 <article class="blog-post">
   <header>
     <h2 class="blog-post-title"><a href="{{ .Permalink }}" title="{{ .Title }}">{{ .Title }}</a></h2>
-    <p class="blog-post-meta"><time datetime="{{ .Date.Format "2006-01-02T15:04:05Z07:00" }}">{{ .Date.Format .Site.Params.date_format }}</time> by <a href="#">{{ .Params.author | default .Site.Params.author }}</a></p>
+    <p class="blog-post-meta"><time datetime="{{ .Date.Format "2006-01-02T15:04:05Z07:00" }}">{{ .Date.Format .Site.Params.date_format }}</time> by <a href="#">{{ .Params.author | default .Site.Params.author }}</a>  {{ if or (.Params.categories) (.Params.tags) }} in {{ partial "meta-terms.html" . }}{{ end }}</p>
   </header>
   {{ .Summary }}
   <a href='{{ .Permalink }}'>Read more →</a>
diff --git a/layouts/partials/meta-terms.html b/layouts/partials/meta-terms.html
new file mode 100644
index 0000000..0f514a8
--- /dev/null
+++ b/layouts/partials/meta-terms.html
@@ -0,0 +1,6 @@
+{{ if .Params.categories }}
+            <i class="fa fa-folder" aria-hidden="true"></i>&nbsp;{{ range $index, $category := .Params.categories }}{{ if gt $index 0 }}, {{ end }}<a href="{{ "/categories/" | relURL }}{{ . | urlize }}" rel="category tag">{{ . }}</a>{{ end }}
+{{ end }}
+{{ if .Params.tags }}
+            <i class="fa fa-tag" aria-hidden="true"></i>&nbsp;{{ range $index, $tag := .Params.tags }}{{ if gt $index 0 }}, {{ end }}<a href="{{ "/tags/" | relURL }}{{ . | urlize }}" rel="tag">{{ . }}</a>{{ end }}
+{{ end }}