From a5ce0e459da628a5764daa52681aa3c0ced52693 Mon Sep 17 00:00:00 2001
From: Jan-Lukas Else <mail@jlelse.de>
Date: Sun, 17 May 2020 11:16:33 +0200
Subject: [PATCH] Add option to show list of articles which mention article

---
 assets/css/style.scss             |  2 +-
 i18n/de.yaml                      |  5 ++++-
 i18n/en.yaml                      |  5 ++++-
 layouts/_default/single.html      |  1 +
 layouts/partials/mentionedin.html | 26 ++++++++++++++++++++++++++
 5 files changed, 36 insertions(+), 3 deletions(-)
 create mode 100644 layouts/partials/mentionedin.html

diff --git a/assets/css/style.scss b/assets/css/style.scss
index 37d4e81..4708993 100644
--- a/assets/css/style.scss
+++ b/assets/css/style.scss
@@ -779,7 +779,7 @@ select {
 }
 
 /* Related articles and webmentions */
-.related, .mentions {
+.related, .mentions, .mentionedin {
 	@include subarticle-element;
 	@media screen and (max-width: $break1) {
 		min-width: 100%;
diff --git a/i18n/de.yaml b/i18n/de.yaml
index 8307b35..eb6195e 100644
--- a/i18n/de.yaml
+++ b/i18n/de.yaml
@@ -65,4 +65,7 @@
   translation: Lies mir bitte vor.
 
 - id: stopspeak
-  translation: Hör auf zu sprechen!
\ No newline at end of file
+  translation: Hör auf zu sprechen!
+
+- id: mentionedin
+  translation: Erwähnt in
\ No newline at end of file
diff --git a/i18n/en.yaml b/i18n/en.yaml
index af932a4..0fc2f3e 100644
--- a/i18n/en.yaml
+++ b/i18n/en.yaml
@@ -68,4 +68,7 @@
   translation: Read to me, please.
 
 - id: stopspeak
-  translation: Stop speaking!
\ No newline at end of file
+  translation: Stop speaking!
+
+- id: mentionedin
+  translation: Mentioned in
\ No newline at end of file
diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index f3c8f32..8311727 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -22,6 +22,7 @@
 		</div>
 		{{ partial "post_tags" . }}
 	</article>
+	{{ partial "mentionedin.html" . }}
 	{{ if (.Param "authorbox") }}{{ partialCached "authorbox" . }}{{ end }}
 </main>
 {{ if (and (.Param "promo") .CurrentSection.Parent) }}{{ partialCached "promo" . }}{{ end }}
diff --git a/layouts/partials/mentionedin.html b/layouts/partials/mentionedin.html
new file mode 100644
index 0000000..bb1d037
--- /dev/null
+++ b/layouts/partials/mentionedin.html
@@ -0,0 +1,26 @@
+{{ if .Param "mentionedin" }}
+{{ if in (.Site.Param "postSections" | default (slice "posts")) .Type }}
+{{ $mentionedIn := slice }}
+{{ $current := .RelPermalink }}
+{{ range .Sites }}
+{{ $allPages := ( where .RegularPages "Type" "in" (.Param "postSections" | default (slice "posts")) ) }}
+{{ range $allPages }}
+{{ if strings.Contains .RawContent $current }}
+{{ $mentionedIn = $mentionedIn | append . }}
+{{ end }}
+{{ end }}
+{{ end }}
+{{ with $mentionedIn }}
+<div class="mentionedin">
+	<details>
+		<summary class="mentionedin-caption">{{ T "mentionedin" }}</summary>
+		<ul class="mentionedin-list">
+			{{ range sort . "Date" "desc" }}
+			<li><a href="{{ .RelPermalink }}">{{ with .Title }}{{ . }}{{ else }}{{ .Summary | truncate 60 }}{{ end }}</a> <i>{{.Date.Format ( .Site.Params.dateformat | default "January 02, 2006")}}</i></li>
+			{{ end }}
+		</ul>
+	</details>
+</div>
+{{ end }}
+{{ end }}
+{{ end }}
\ No newline at end of file