Merge branch 'next' of github.com:devforth/adminforth into polymorphic

Author: SerVitasik

adminforth/modules/restApi.ts

@@ -1076,7 +1076,7 @@ export default class AdminForthRestAPI implements IAdminForthRestAPI {
 
             // for polymorphic foreign resources, we need to find out the value for polymorphicOn column
             for (const column of resource.columns) {
-              if (column.foreignResource?.polymorphicOn) {
+              if (column.foreignResource?.polymorphicOn && record[column.name] !== undefined) {
                 let newPolymorphicOnValue = null;
                 if (record[column.name]) {
                   const targetResources = {};

adminforth/spa/src/views/EditView.vue

@@ -145,7 +145,7 @@ async function saveRecord() {
 
     const column = coreStore.resource.columns.find((c) => c.name === key);
     if (column?.foreignResource) {
-      columnIsUpdated = record.value[key] !== coreStore.record[key].pk;
+      columnIsUpdated = record.value[key] !== coreStore.record[key]?.pk;
     }
 
     if (columnIsUpdated) {