fix: refs #8217 update formModel template to ensure unique ID and handle null obj2 in getDifferences filter

src/components/FormModel.vue

@@ -316,6 +316,7 @@ defineExpose({
 <template>
     <div class="column items-center full-width">
         <QForm
+            id="formModel"
             ref="myForm"
             v-if="formData"
             @submit.prevent
@@ -323,7 +324,6 @@ defineExpose({
             @reset="reset"
             class="q-pa-md"
             :style="maxWidth ? 'max-width: ' + maxWidth : ''"
-            id="formModel"
         >
             <QCard>
                 <slot

src/filters/getDifferences.js

@@ -1,6 +1,7 @@
 export default function getDifferences(obj1, obj2) {
     let diff = {};
     delete obj1.$index;
+    if (!obj2) return obj1;
     delete obj2.$index;
 
     for (let key in obj1) {