From 5e13298a65d8c97acfdb5e07e41402c6bae04b37 Mon Sep 17 00:00:00 2001
From: geekifan <i@ifan.dev>
Date: Fri, 23 May 2025 11:47:39 +0800
Subject: [PATCH] fix(taxonomy): ensure category existence check before
 accessing parameters

Updated the category terms layout to check for the existence of the "categories" parameter before attempting to access its length, preventing potential errors.
---
 layouts/taxonomy/category.terms.html | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/layouts/taxonomy/category.terms.html b/layouts/taxonomy/category.terms.html
index 546bc19..d7869ca 100644
--- a/layouts/taxonomy/category.terms.html
+++ b/layouts/taxonomy/category.terms.html
@@ -9,8 +9,10 @@
     <!-- get all parent categories -->
     {{ $parentCategories := slice }}
     {{ range $allPages }}
-      {{ if gt (len .Params.categories) 0 }}
-        {{ $parentCategories = $parentCategories | append (index .Params.categories 0) }}
+      {{ if isset .Params "categories" }}
+        {{ if gt (len .Params.categories) 0 }}
+          {{ $parentCategories = $parentCategories | append (index .Params.categories 0) }}
+        {{ end }}
       {{ end }}
     {{ end }}
     {{ $parentCategories = $parentCategories | uniq | sort }}
@@ -23,11 +25,13 @@
       
       <!-- get all pages and subcategories related to the parent category -->
       {{ range $allPages }}
-        {{ if gt (len .Params.categories) 0 }}
-          {{ if eq (index .Params.categories 0) $parentName }}
-            {{ $parentPages = $parentPages | append . }}
-            {{ if gt (len .Params.categories) 1 }}
-              {{ $subcategories = $subcategories | append (index .Params.categories 1) }}
+        {{ if isset .Params "categories" }}
+          {{ if gt (len .Params.categories) 0 }}
+            {{ if eq (index .Params.categories 0) $parentName }}
+              {{ $parentPages = $parentPages | append . }}
+              {{ if gt (len .Params.categories) 1 }}
+                {{ $subcategories = $subcategories | append (index .Params.categories 1) }}
+              {{ end }}
             {{ end }}
           {{ end }}
         {{ end }}