small_img() helper added

app/helpers/packages_helper.rb

@@ -32,6 +32,24 @@ module PackagesHelper
     str.join(' ∙ ')
   end
 
+  def small_img(screenshot, cls: 'thumbnail')
+    if screenshot && screenshot.simage(:small)
+      image = screenshot.simage(:small)
+      image_tag(
+        image.url,
+        width: image.width,
+        height: image.height,
+        alt: screenshot.caption, 
+        class: cls
+      )
+    else
+      image_tag(
+        '/images/dummy/no-screenshots-available.svg',
+        width: 220,
+        height: 220 * 3 / 4
+      )
+    end
+  end
 
   # Show filled/empty star icons from FontAwesome
   # depending on the rating (1-5)