adjust webhooks

db/migrate/20241028162000_add_secret_to_webhook_urls.rb

@@ -1,7 +1,21 @@
 # frozen_string_literal: true
 
 class AddSecretToWebhookUrls < ActiveRecord::Migration[7.2]
+  class MigrationWebhookUrl < ApplicationRecord
+    self.table_name = 'webhook_urls'
+
+    serialize :secret, coder: JSON
+
+    encrypts :url, :secret
+  end
+
   def change
     add_column :webhook_urls, :secret, :text
+
+    MigrationWebhookUrl.all.each do |url|
+      url.update_columns(secret: {})
+    end
+
+    change_column_null :webhook_urls, :secret, false
   end
 end