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-rw-r--r--activestorage/db/update_migrate/20180723000244_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/activestorage/db/update_migrate/20180723000244_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.rb b/activestorage/db/update_migrate/20180723000244_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.rb
index 6830203cd6..5472e3c87b 100644
--- a/activestorage/db/update_migrate/20180723000244_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.rb
+++ b/activestorage/db/update_migrate/20180723000244_add_foreign_key_constraint_to_active_storage_attachments_for_blob_id.rb
@@ -1,6 +1,8 @@
class AddForeignKeyConstraintToActiveStorageAttachmentsForBlobId < ActiveRecord::Migration[6.0]
def up
- unless foreign_key_exists?(:active_storage_attachments, column: :blob_id)
+ return if foreign_key_exists?(:active_storage_attachments, column: :blob_id)
+
+ if table_exists?(:active_storage_blobs)
add_foreign_key :active_storage_attachments, :active_storage_blobs, column: :blob_id
end
end