Mark read notifications as read after migrating to conversations

config/initializers/mailboxer.rb

@@ -7,7 +7,7 @@ Mailboxer.setup do |config|
 
   # Configures the methods needed by mailboxer
   # config.email_method = :email
-  # config.name_method = :login_name
+  config.name_method = :login_name
   config.notify_method = :notify
 
   # Configures if you use or not a search engine and which one you are using

db/migrate/20190720000625_notifications_to_mailboxer.rb

@@ -7,7 +7,10 @@ class NotificationsToMailboxer < ActiveRecord::Migration[5.2]
     Notification.find_in_batches.each do |group|
       group.each do |n|
         n.body = 'message has no body' if n.body.blank?
-        n.send_message
+        receipt = n.send_message
+        next unless n.read
+
+        receipt.conversation.receipts.each(&:mark_as_read)
       end
     end
   end