Merge pull request #1692 from bolt/bugfix/thumbnail-one-dimension

Thumbnailing works with only width or only height

src/Utils/ThumbnailHelper.php

@@ -19,11 +19,15 @@ public function __construct(?Config $config = null)
 
     public function parameters(?int $width = null, ?int $height = null, ?string $location = null, ?string $path = null, ?string $fit = null): string
     {
-        if (! $width) {
+        if (! $width && ! $height) {
             $width = $this->config->get('general/thumbnails/default_thumbnail/0', 320);
-        }
-        if (! $height) {
             $height = $this->config->get('general/thumbnails/default_thumbnail/1', 240);
+        } elseif (! $width) {
+            // If no width, let it be ridiculously high, so that it crops based on height
+            $width = 10000;
+        } elseif (! $height) {
+            // If no height, let it be ridiculously high, so that it crops based on width
+            $height = 10000;
         }
 
         $paramString = sprintf('%s×%s', $width, $height);