Follow up - 467bc03 - Fixes zammad#2389 - Broken Setting structure fo…

…r Auth::Backend adapters.

db/migrate/20210728103633_move_auth_backends_to_database.rb

@@ -18,7 +18,7 @@ def change
       },
       state:       {
         priority: 1,
-        adapter:  'Auth::Internal',
+        adapter:  'Auth::Backend::Internal',
       },
       frontend:    false
     )
@@ -34,20 +34,29 @@ def change
       },
       state:       {
         priority: 2,
-        adapter:  'Auth::Developer',
+        adapter:  'Auth::Backend::Developer',
       },
       frontend:    false
     )
 
+    update_auth_ldap
+  end
+
+  private
+
+  def update_auth_ldap # rubocop:disable Metrics/AbcSize
+
     begin
       auth_ldap = Setting.find_by(name: 'auth_ldap')
 
       auth_ldap.state_initial[:value][:priority] = 3
+      auth_ldap.state_initial[:value][:adapter] = 'Auth::Backend::Ldap'
       auth_ldap.state_current[:value][:priority] = 3
+      auth_ldap.state_current[:value][:adapter] = 'Auth::Backend::Ldap'
 
       auth_ldap.save!
     rescue => e
-      Rails.logger.error "Error while updating 'auth_ldap' Setting priority"
+      Rails.logger.error "Error while updating 'auth_ldap' Setting priority and adapter"
       Rails.logger.error e
     end
   end