chore(imageJSON.html): add alt attribute to images in imageJSON partial to improve accessibility

exampleSite/content/Erwitt/index.md

@@ -6,4 +6,6 @@ menu:
   main:
     weight: 3
     identifier: Erwitt
+    title: Erwitt
+unifiedAlt: '© Elliott Erwitt'
 ---

exampleSite/content/Gruyaert/index.md

@@ -6,4 +6,6 @@ menu:
   main:
     weight: 1
     identifier: Gruyaert
+    title: Gruyaert
+unifiedAlt: '© Harry Gruyaert'
 ---

exampleSite/content/Info/index.md

@@ -1,11 +1,13 @@
 ---
 type: _default
 layout: single
-url: /info/
+url: /Info/
 menu:
   main:
     weight: 4
     identifier: Info
+    title: Info
+unifiedAlt: ''
 ---
 
 Bridget is a _minimal_ Hugo theme designed for photographers / visual artists.

exampleSite/content/Webb/index.md

@@ -6,4 +6,6 @@ menu:
   main:
     weight: 2
     identifier: Webb
+    title: Webb
+unifiedAlt: '© Alex Webb'
 ---

layouts/partials/resources/imageJSON.html

@@ -1,15 +1,22 @@
 {{- $Page := .Page -}}
+{{- $params := .Page.Params | merge .Site.Params.Page -}}
 
-{{ $gallery := site.GetPage .Path }}
+{{- $gallery := site.GetPage .Path -}}
-{{ with $gallery.Resources.ByType "image" }}
+{{- with $gallery.Resources.ByType "image" -}}
-  {{ $index := len . }}
+  {{- $index := len . -}}
-  {{ $Page.Scratch.Add "img" slice }}
+  {{- $Page.Scratch.Add "img" slice -}}
-  {{ range . }}
+  {{- range sort . "Name" "desc" -}}
-    {{ $index = sub $index 1 }}
+    {{- $image := . -}}
-    {{ $lores := .Resize "800x webp Lanczos q60" }}
+    {{- $index = sub $index 1 -}}
-    {{ $hires := .Resize "2500x webp Lanczos q75" }}
+    {{- $alt := .Name -}}
-    {{ $Page.Scratch.Add "img" (dict
+    {{- with $params.unifiedAlt -}}
+      {{- $alt = . -}}
+    {{- end -}}
+    {{- $lores := .Resize "800x webp Lanczos q60" -}}
+    {{- $hires := .Resize "2500x webp Lanczos q75" -}}
+    {{- $Page.Scratch.Add "img" (dict
       "index" (int $index)
+      "alt" (string $alt)
       "loUrl" (string $lores.RelPermalink)
       "loImgH" (int $lores.Height)
       "loImgW" (int $lores.Width)
@@ -17,7 +24,7 @@
       "hiImgH" (int $hires.Height)
       "hiImgW" (int $hires.Width)
       )
-    }}
+    -}}
   {{- end -}}
     <script id="imagesSource" type="application/json">{{ $Page.Scratch.Get "img" | jsonify | safeJS }}</script>
 {{- end -}}