fix: {Organizer} placeholder in event title not updating on reschedule (#21034)

packages/features/bookings/lib/handleNewBooking.ts

@@ -53,7 +53,7 @@ import {
 } from "@calcom/lib/delegationCredential/server";
 import { ErrorCode } from "@calcom/lib/errorCodes";
 import { getErrorFromUnknown } from "@calcom/lib/errors";
-import { getEventName } from "@calcom/lib/event";
+import { getEventName, updateHostInEventName } from "@calcom/lib/event";
 import { extractBaseEmail } from "@calcom/lib/extract-base-email";
 import { getBookerBaseUrl } from "@calcom/lib/getBookerUrl/server";
 import getOrgIdFromMemberOrTeamId from "@calcom/lib/getOrgIdFromMemberOrTeamId";
@@ -1262,6 +1262,19 @@ async function handler(
     !!originalRescheduledBooking.rescheduled &&
     originalRescheduledBooking.status === BookingStatus.CANCELLED;
 
+  if (
+    changedOrganizer &&
+    originalRescheduledBooking &&
+    originalRescheduledBooking?.user?.name &&
+    organizerUser?.name
+  ) {
+    evt.title = updateHostInEventName(
+      originalRescheduledBooking.title,
+      originalRescheduledBooking.user.name,
+      organizerUser.name
+    );
+  }
+
   let results: EventResult<AdditionalInformation & { url?: string; iCalUID?: string }>[] = [];
   let referencesToCreate: PartialReference[] = [];
 
@@ -1430,7 +1443,6 @@ async function handler(
       : [];
 
     if (changedOrganizer) {
-      evt.title = getEventName(eventNameObject);
       // location might changed and will be new created in eventManager.create (organizer default location)
       evt.videoCallData = undefined;
       // To prevent "The requested identifier already exists" error while updating event, we need to remove iCalUID

packages/features/bookings/lib/handleNewBooking/createBooking.ts

@@ -57,7 +57,6 @@ function updateEventDetails(
   originalRescheduledBooking: OriginalRescheduledBooking | null
 ) {
   if (originalRescheduledBooking) {
-    evt.title = originalRescheduledBooking?.title || evt.title;
     evt.description = originalRescheduledBooking?.description || evt.description;
     evt.location = evt.location || originalRescheduledBooking?.location;
   }

packages/features/bookings/lib/handleNewBooking/test/reschedule.test.ts

@@ -2034,6 +2034,8 @@ describe("handleNewBooking", () => {
 
           const { dateString: plus1DateString } = getDate({ dateIncrement: 1 });
           const uidOfBookingToBeRescheduled = "n5Wv3eHgconAED2j4gcVhP";
+          const dynamicEventName = "{Scheduler} and {Organiser}: Team Meeting";
+
           await createBookingScenario(
             getScenarioData({
               eventTypes: [
@@ -2041,6 +2043,7 @@ describe("handleNewBooking", () => {
                   id: 1,
                   slotInterval: 15,
                   length: 15,
+                  eventName: dynamicEventName,
                   users: [
                     {
                       id: 101,
@@ -2131,6 +2134,8 @@ describe("handleNewBooking", () => {
           expect(createdBooking.startTime?.toISOString()).toBe(`${plus1DateString}T04:00:00.000Z`);
           expect(createdBooking.endTime?.toISOString()).toBe(`${plus1DateString}T04:15:00.000Z`);
 
+          expect(createdBooking.title).toBe(`${booker.name} and ${roundRobinHost1.name}: Team Meeting`);
+
           await expectBookingInDBToBeRescheduledFromTo({
             from: {
               uid: uidOfBookingToBeRescheduled,

packages/lib/event.ts

@@ -110,6 +110,23 @@ export function getEventName(eventNameObj: EventNameObjectType, forAttendeeView
   return dynamicEventName;
 }
 
+export function updateHostInEventName(eventName: string, oldHost: string, newHost: string) {
+  const oldHostFirstName = oldHost.split(" ")[0];
+  const newHostFirstName = newHost.split(" ")[0];
+
+  if (!eventName.includes(oldHost) && !eventName.includes(oldHostFirstName)) {
+    return eventName;
+  }
+
+  let updatedEventName = eventName;
+
+  updatedEventName = updatedEventName.replace(oldHost, newHost);
+
+  updatedEventName = updatedEventName.replace(oldHostFirstName, newHostFirstName);
+
+  return updatedEventName;
+}
+
 export const validateCustomEventName = (value: string, bookingFields?: Prisma.JsonObject | null) => {
   let customInputVariables: string[] = [];
   if (bookingFields) {