From f864b5c324cfdd6e98f511ce2faca6e237e5b011 Mon Sep 17 00:00:00 2001
From: Cotes Chung <11371340+cotes2020@users.noreply.github.com>
Date: Thu, 4 Feb 2021 23:08:09 +0800
Subject: [PATCH] Hide empty categries/tags in search (#273)

---
 _includes/search-loader.html | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/_includes/search-loader.html b/_includes/search-loader.html
index 4a18e6d..2f3ab4d 100644
--- a/_includes/search-loader.html
+++ b/_includes/search-loader.html
@@ -1,13 +1,14 @@
 <!--
   Jekyll Simple Search loader
+  See: <https://github.com/christian-fei/Simple-Jekyll-Search>
 -->
 
 {% capture result_elem %}
 <div class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-lg-4 pr-lg-4 pl-xl-0 pr-xl-0">
   <a href="{{ site.url }}{url}">{title}</a>
   <div class="post-meta d-flex flex-column flex-sm-row text-muted mt-1 mb-1">
-    <div class="mr-sm-4"><i class="far fa-folder fa-fw"></i>{categories}</div>
-    <div><i class="fa fa-tag fa-fw"></i>{tags}</div>
+    {categories}
+    {tags}
   </div>
   <p>{snippet}</p>
 </div>
@@ -23,6 +24,23 @@ SimpleJekyllSearch({
   resultsContainer: document.getElementById('search-results'),
   json: '{{ '/assets/js/data/search.json' | relative_url }}',
   searchResultTemplate: '{{ result_elem | strip_newlines }}',
-  noResultsText: '{{ not_found }}'
+  noResultsText: '{{ not_found }}',
+  templateMiddleware: function(prop, value, template) {
+    if (prop === 'categories') {
+      if (value === '') {
+        return `${value}`;
+      } else {
+        return `<div class="mr-sm-4"><i class="far fa-folder fa-fw"></i>${value}</div>`;
+      }
+    }
+
+    if (prop === 'tags') {
+      if (value === '') {
+        return `${value}`;
+      } else {
+        return `<div><i class="fa fa-tag fa-fw"></i>${value}</div>`;
+      }
+    }
+  }
 });
 </script>