5 files changed, 36 insertions, 12 deletions
diff --git a/app/controllers/active_storage/variants_controller.rb b/app/controllers/active_storage/variants_controller.rb
index 05685dca17..dde7e1458f 100644
--- a/app/controllers/active_storage/variants_controller.rb
+++ b/app/controllers/active_storage/variants_controller.rb
@@ -13,7 +13,10 @@ class ActiveStorage::VariantsController < ActionController::Base
     end
 
     def processed_variant_for(blob_key)
-      ActiveStorage::Variant.find_or_process_by!(blob_key: blob_key, encoded_variant_key: params[:encoded_variant_key])
+      ActiveStorage::Variant.new(
+        ActiveStorage::Blob.find_by!(key: blob_key),
+        ActiveStorage::Variation.decode(params[:variation_key])
+      ).processed
     end
 
     def disposition_param
diff --git a/config/routes.rb b/config/routes.rb
index ad54b178fe..bd0787180a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,13 +1,13 @@
 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/:encoded_variant_key/*filename" => "active_storage/variants#show", as: :rails_blob_variant
+  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|
-    encoded_blob_key    = ActiveStorage::VerifiedKeyWithExpiration.encode(variant.blob.key)
-    encoded_variant_key = ActiveStorage::Variant.encode_key(variant.variation)
-    filename            = variant.blob.filename
+    encoded_blob_key = ActiveStorage::VerifiedKeyWithExpiration.encode(variant.blob.key)
+    variantion_key   = ActiveStorage::Variation.encode(variant.variation)
+    filename         = variant.blob.filename
 
-    route_for(:rails_blob_variant, encoded_blob_key, encoded_variant_key, filename)
+    route_for(:rails_blob_variant, encoded_blob_key, variantion_key, filename)
   end
 end
diff --git a/lib/active_storage/variant.rb b/lib/active_storage/variant.rb
index 8be51eba92..ba2604eccf 100644
--- a/lib/active_storage/variant.rb
+++ b/lib/active_storage/variant.rb
@@ -5,12 +5,6 @@ class ActiveStorage::Variant
   attr_reader :blob, :variation
   delegate :service, to: :blob
 
-  class << self
-    def find_or_process_by!(blob_key:, variation_key:)
-      new(ActiveStorage::Blob.find_by!(key: blob_key), variation: ActiveStorage::Variation.decode(variation_key)).processed
-    end
-  end
-
   def initialize(blob, variation)
     @blob, @variation = blob, variation
   end
diff --git a/test/controllers/variants_controller.rb b/test/controllers/variants_controller.rb
new file mode 100644
index 0000000000..132d93a3cf
--- /dev/null
+++ b/test/controllers/variants_controller.rb
@@ -0,0 +1,25 @@
+require "test_helper"
+require "database/setup"
+
+require "active_storage/variants_controller"
+require "active_storage/verified_key_with_expiration"
+
+class ActiveStorage::VariantsControllerTest < ActionController::TestCase
+  setup do
+    @blob = ActiveStorage::Blob.create_after_upload! \
+      filename: "racecar.jpg", content_type: "image/jpeg",
+      io: File.open(File.expand_path("../../fixtures/files/racecar.jpg", __FILE__))
+
+    @routes = Routes
+    @controller = ActiveStorage::VariantsController.new
+  end
+
+  test "showing variant inline" do
+    get :show, params: {
+      filename: @blob.filename,
+      encoded_blob_key: ActiveStorage::VerifiedKeyWithExpiration.encode(@blob.key, expires_in: 5.minutes),
+      variation_key: ActiveStorage::Variation.encode(resize: "100x100") }
+
+    assert_redirected_to /racecar.jpg\?disposition=inline/
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index e98b6e0afc..7aa7b50bf3 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,3 +1,5 @@
+$LOAD_PATH << File.expand_path("../../app/controllers", __FILE__)
+
 require "bundler/setup"
 require "active_support"
 require "active_support/test_case"