Provide directed URL as well as resolving

config/routes.rb

 ActiveStorage::Engine.routes.draw do
   get  "/rails/active_storage/disk/:encoded_key/*filename" => "active_storage/disk#show", as: :rails_disk_blob
-  get  "/rails/active_storage/variants/:encoded_blob_key/:variation_key/*filename" => "active_storage/variants#show", as: :rails_blob_variant
   post "/rails/active_storage/direct_uploads" => "active_storage/direct_uploads#create", as: :rails_direct_uploads
 
-  resolve 'ActiveStorage::Variant' do |variant|
+  get  "/rails/active_storage/variants/:encoded_blob_key/:variation_key/*filename" => "active_storage/variants#show", as: :rails_blob_variation
+
+  direct :rails_variant do |variant|
     encoded_blob_key = ActiveStorage::VerifiedKeyWithExpiration.encode(variant.blob.key)
-    variantion_key   = ActiveStorage::Variation.encode(variant.variation)
+    variation_key    = variant.variation.key
     filename         = variant.blob.filename
 
-    route_for(:rails_blob_variant, encoded_blob_key, variantion_key, filename)
+    route_for(:rails_blob_variation, encoded_blob_key, variation_key, filename)
   end
+
+  resolve 'ActiveStorage::Variant' { |variant| route_for(:rails_variant, variant) }
 end