Fix blob associations

cc @javan

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/active_storage/attached/macros.rb b/lib/active_storage/attached/macros.rb
index 54c2731c08..11f88f16e5 100644
--- a/lib/active_storage/attached/macros.rb
+++ b/lib/active_storage/attached/macros.rb
@@ -18,7 +18,7 @@ module ActiveStorage::Attached::Macros
     end
 
     has_one :"#{name}_attachment", -> { where(name: name) }, class_name: "ActiveStorage::Attachment", as: :record
-    has_one :"#{name}_blob", through: :"#{name}_attachment"
+    has_one :"#{name}_blob", through: :"#{name}_attachment", class_name: "ActiveStorage::Blob", source: :blob
 
     if dependent == :purge_later
       before_destroy { public_send(name).purge_later }
@@ -47,7 +47,7 @@ module ActiveStorage::Attached::Macros
     end
 
     has_many :"#{name}_attachments", -> { where(name: name) }, as: :record, class_name: "ActiveStorage::Attachment"
-    has_many :"#{name}_blobs", through: :"#{name}_attachments"
+    has_many :"#{name}_blobs", through: :"#{name}_attachments", class_name: "ActiveStorage::Blob", source: :blob
 
     scope :"with_attached_#{name}", -> { includes("#{name}_attachments": :blob) }