Picker and MultiSelect fixes (#2883)

* Fixed orderBy bug

* Fixed gitch select multiple record filter

* Fixed RelationPicker search

* Fixed OrderBy type

front/src/modules/object-metadata/utils/getObjectOrderByField.ts

@@ -0,0 +1,35 @@
+import { ObjectMetadataItem } from '@/object-metadata/types/ObjectMetadataItem';
+import { OrderBy } from '@/object-metadata/types/OrderBy';
+import { OrderByField } from '@/object-metadata/types/OrderByField';
+import { FieldMetadataType } from '~/generated-metadata/graphql';
+
+export const getObjectOrderByField = (
+  objectMetadataItem: ObjectMetadataItem,
+  orderBy: OrderBy,
+): OrderByField => {
+  const labelIdentifierFieldMetadata = objectMetadataItem.fields.find(
+    (field) =>
+      field.id === objectMetadataItem.labelIdentifierFieldMetadataId ||
+      field.name === 'name',
+  );
+
+  if (labelIdentifierFieldMetadata) {
+    switch (labelIdentifierFieldMetadata.type) {
+      case FieldMetadataType.FullName:
+        return {
+          [labelIdentifierFieldMetadata.name]: {
+            firstName: orderBy,
+            lastName: orderBy,
+          },
+        };
+      default:
+        return {
+          [labelIdentifierFieldMetadata.name]: orderBy,
+        };
+    }
+  } else {
+    return {
+      createdAt: orderBy,
+    };
+  }
+};