feat(helper/image): new way to set default image

exampleSite/config.toml

@@ -37,9 +37,13 @@ DefaultContentLanguage = "en"                   # Theme i18n support
         [params.widgets.tagCloud]
             limit = 10
     [params.opengraph]
-        defaultImage = ""
         [params.opengraph.twitter]
             site = ""
+    [params.defaultImage]
+        [params.defaultImage.opengraph]
+            enabled = false
+            local = false
+            src = ""
             
 [menu]
     [[menu.main]]

layouts/_default/term.html

@@ -15,7 +15,7 @@
                 {{ end }}
             </div>
 
-            {{ $image := partial "helper/image" . }}
+            {{ $image := partial "helper/image" (dict "Context" .) }}
             {{ if $image.exists }}
                 <div class="taxonomy-image">
                     {{ if $image.resource }}   

layouts/partials/article-list/compact.html

@@ -12,7 +12,7 @@
         </footer>
     </div>
 
-    {{ $image := partial "helper/image" . }}
+    {{ $image := partial "helper/image" (dict "Context" .) }}
     
     {{ if $image.exists }}
         <div class="article-image">

layouts/partials/article-list/default.html

@@ -1,4 +1,4 @@
-{{ $image := partial "helper/image" . }}
+{{ $image := partial "helper/image" (dict "Context" .) }}
 <article class="{{ if $image.exists }}has-image{{ end }}">
     {{ if $image.exists }}
         <div class="article-image">

layouts/partials/article-list/tile.html

@@ -1,4 +1,4 @@
-{{ $image := partial "helper/image" .context }}
+{{ $image := partial "helper/image" (dict "Context" .context) }}
 <article class="{{ if $image.exists }}has-image{{ end }}">
     <a href="{{ .context.Permalink }}">
         

layouts/partials/article/components/details.html

@@ -1,4 +1,4 @@
-{{ $image := partial "helper/image" . }}
+{{ $image := partial "helper/image" (dict "Context" .) }}
 {{ $context := . }}
 <div class="article-details">
     {{ with $categories := .Params.categories }}

layouts/partials/article/components/header.html

@@ -1,5 +1,5 @@
 <header class="article-header">
-    {{ $image := partial "helper/image" . }}
+    {{ $image := partial "helper/image" (dict "Context" .) }}
 
     {{ if $image.exists }}
         <div class="article-image">

layouts/partials/head/opengraph.html

@@ -40,13 +40,9 @@
 	{{- end -}}
 {{- end -}}
 
-{{ $image := partial "helper/image" . }}
+{{ $image := partial "helper/image" (dict "Context" . "Type" "opengraph") }}
 {{- if $image.exists -}}
 	<meta name="twitter:card" content="summary_large_image">
-	<meta property='og:image' content='{{ $image.permalink }}' />
-	<meta name="twitter:image" content='{{ $image.permalink }}' />
-{{- else if .Site.Params.opengraph.defaultImage -}}
-	{{ $image := resources.Get .Site.Params.opengraph.defaultImage }}
-	<meta property='og:image' content='{{ absURL $image.RelPermalink }}' />
-	<meta name="twitter:image" content='{{ absURL $image.RelPermalink }}' />
+	<meta property='og:image' content='{{ absURL $image.permalink }}' />
+	<meta name="twitter:image" content='{{ absURL $image.permalink }}' />
 {{- end -}}

layouts/partials/helper/image.html

@@ -1,5 +1,6 @@
 {{ $result := dict "exists" false "permalink" nil "resource" nil "isDefault" false }}
-{{ $imageField := .Params.image }}
+{{ $imageField := .Context.Params.image }}
+
 {{ if $imageField }}
     <!-- If page has `image` field set -->
     {{ $result = merge $result (dict "exists" true) }}
@@ -9,7 +10,7 @@
         <!-- Is a external image -->
         {{ $result = merge $result (dict "permalink" $imageField) }}
     {{ else }}
-        {{ $pageResourceImage := .Resources.GetMatch (printf "%s" ($imageField | safeURL)) }}
+        {{ $pageResourceImage := .Context.Resources.GetMatch (printf "%s" ($imageField | safeURL)) }}
         {{ $siteResourceImage := resources.GetMatch (printf "%s" ($imageField | safeURL)) }}
         
         {{ if $pageResourceImage }}
@@ -27,6 +28,34 @@
         {{ end }}
     {{ end }}
 
+{{ else if and (ne .Type nil) (index .Context.Site.Params.defaultImage .Type) }}
+    <!-- Type arg is set, check for defaultImage setting -->
+    
+    {{ $defaultImageSetting := index .Context.Site.Params.defaultImage .Type }}
+
+    {{ if $defaultImageSetting.enabled }}
+        {{ $result = merge $result (dict "isDefault" true) }}
+        {{ $result = merge $result (dict "exists" true) }}
+
+        {{ if $defaultImageSetting.local }}
+            {{ $siteResourceImage := resources.GetMatch (printf "%s" ($defaultImageSetting.src | safeURL)) }}
+
+            {{ if $siteResourceImage }}
+                <!-- Try search image under site's assets folder -->
+                {{ $result = merge $result (dict "permalink" $siteResourceImage.RelPermalink) }}
+                {{ $result = merge $result (dict "resource" $siteResourceImage) }}
+            {{ else }}
+                <!-- Can not find the image -->
+                {{ errorf "Failed loading image: %q" $defaultImageSetting.src }}
+                {{ $result = merge $result (dict "exists" false) }}
+            {{ end }}
+
+        {{ else }}
+
+            {{ $result = merge $result (dict "permalink" $defaultImageSetting.src) }}
+
+        {{ end }}
+    {{ end }}
 {{ end }}
 
 {{ return $result }}