Upstream sync

app/controllers/api/direct_uploads_controller.rb

@@ -3,15 +3,25 @@
 class Api::DirectUploadsController < Api::ApiController
   include ActiveStorage::SetCurrent
 
+  deserializable_resource :direct_upload, only: [:create]
+
   def create
-    blob = ActiveStorage::Blob.create_before_direct_upload!(blob_args)
+    blob = ActiveStorage::Blob.create_before_direct_upload!(blob_params)
     render jsonapi: DirectUpload.new(blob)
   end
 
   private
 
-  def blob_args
-    params.require(:blob).permit(:filename, :byte_size, :checksum, :content_type, :metadata).to_h.symbolize_keys
+  def blob_params
+    params.
+      require(:direct_upload).
+      permit(:type, :filename, :byte_size, :checksum, :content_type, :metadata).
+      except(:type).
+      to_h.symbolize_keys
+  end
+
+  class DeserializableDirectUpload < JSONAPI::Deserializable::Resource
+    attributes :filename, :byte_size, :checksum, :content_type, :metadata
   end
 
   class SerializableDirectUpload < JSONAPI::Serializable::Resource