Restrict variants to variable image blobs

2 files changed, 3 insertions, 0 deletions

diff --git a/activestorage/lib/active_storage.rb b/activestorage/lib/active_storage.rb
index d1ff6b7032..3b28113dc7 100644
--- a/activestorage/lib/active_storage.rb
+++ b/activestorage/lib/active_storage.rb
@@ -41,4 +41,5 @@ module ActiveStorage
   mattr_accessor :queue
   mattr_accessor :previewers, default: []
   mattr_accessor :analyzers, default: []
+  mattr_accessor :variable_content_types, default: []
 end
diff --git a/activestorage/lib/active_storage/engine.rb b/activestorage/lib/active_storage/engine.rb
index b870e6d4d6..b41d8bb4d7 100644
--- a/activestorage/lib/active_storage/engine.rb
+++ b/activestorage/lib/active_storage/engine.rb
@@ -16,6 +16,7 @@ module ActiveStorage
     config.active_storage = ActiveSupport::OrderedOptions.new
     config.active_storage.previewers = [ ActiveStorage::Previewer::PDFPreviewer, ActiveStorage::Previewer::VideoPreviewer ]
     config.active_storage.analyzers = [ ActiveStorage::Analyzer::ImageAnalyzer, ActiveStorage::Analyzer::VideoAnalyzer ]
+    config.active_storage.variable_content_types = [ "image/png", "image/gif", "image/jpg", "image/jpeg", "image/vnd.adobe.photoshop" ]
     config.active_storage.paths = ActiveSupport::OrderedOptions.new
 
     config.eager_load_namespaces << ActiveStorage
@@ -26,6 +27,7 @@ module ActiveStorage
         ActiveStorage.queue      = app.config.active_storage.queue
         ActiveStorage.previewers = app.config.active_storage.previewers || []
         ActiveStorage.analyzers  = app.config.active_storage.analyzers || []
+        ActiveStorage.variable_content_types = app.config.active_storage.variable_content_types || []
       end
     end