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-rw-r--r--activestorage/app/controllers/active_storage/previews_controller.rb12
1 files changed, 12 insertions, 0 deletions
diff --git a/activestorage/app/controllers/active_storage/previews_controller.rb b/activestorage/app/controllers/active_storage/previews_controller.rb
new file mode 100644
index 0000000000..9e8cf27b6e
--- /dev/null
+++ b/activestorage/app/controllers/active_storage/previews_controller.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class ActiveStorage::PreviewsController < ActionController::Base
+ def show
+ if blob = ActiveStorage::Blob.find_signed(params[:signed_blob_id])
+ expires_in ActiveStorage::Blob.service.url_expires_in
+ redirect_to ActiveStorage::Preview.new(blob, params[:variation_key]).processed.service_url(disposition: params[:disposition])
+ else
+ head :not_found
+ end
+ end
+end