fix: one-to-one relation in nested add new row option

packages/nc-gui/components/virtual-cell/OneToOne.vue

@@ -55,7 +55,9 @@ const value = computed(() => {
   if (cellValue?.value) {
     return cellValue?.value
   } else if (isNew.value) {
-    return state?.value?.[column?.value.title as string]
+    return Array.isArray(state?.value?.[column?.value.title as string])
+      ? state?.value?.[column?.value.title as string][0]
+      : state?.value?.[column?.value.title as string]
   }
   return null
 })

packages/nc-gui/components/virtual-cell/components/UnLinkedItems.vue

@@ -142,7 +142,7 @@ const newRowState = computed(() => {
   const relatedTableColOpt = colInRelatedTable?.colOptions as LinkToAnotherRecordType
   if (!relatedTableColOpt) return {}
 
-  if (relatedTableColOpt.type === RelationTypes.BELONGS_TO) {
+  if (relatedTableColOpt.type === RelationTypes.BELONGS_TO || relatedTableColOpt.type === RelationTypes.ONE_TO_ONE) {
     return {
       [colInRelatedTable.title as string]: row?.value?.row,
     }

packages/nocodb/src/db/BaseModelSqlv2.ts

@@ -3314,16 +3314,17 @@ class BaseModelSqlv2 {
               await childModel.getColumns();
 
               if (isBt) {
+                // if array then extract value from first element
+                const colVal = Array.isArray(nestedData)
+                  ? nestedData[0]?.[childModel.primaryKey.title]
+                  : nestedData[childModel.primaryKey.title];
                 // todo: unlink the ref record
                 preInsertOps.push(async () => {
                   return this.dbDriver(this.getTnPath(childModel.table_name))
                     .update({
                       [childCol.column_name]: null,
                     })
-                    .where(
-                      childCol.column_name,
-                      nestedData[childModel.primaryKey.title],
-                    )
+                    .where(childCol.column_name, colVal)
                     .toQuery();
                 });