Fix prefill failing if name isnt provided

packages/features/bookings/lib/getBookingResponsesSchema.ts

@@ -254,8 +254,8 @@ function preprocess<T extends z.ZodType>({
   );
   if (isPartialSchema) {
     // Query Params can be completely invalid, try to preprocess as much of it in correct format but in worst case simply don't prefill instead of crashing
-    return preprocessed.catch(() => {
-      console.error("Failed to preprocess query params, prefilling will be skipped");
+    return preprocessed.catch(function (res?: { error?: unknown[] }) {
+      console.error("Failed to preprocess query params, prefilling will be skipped", res?.error);
       return {};
     });
   }

packages/features/form-builder/schema.ts

@@ -1,6 +1,7 @@
 import { z } from "zod";
 
 import { getValidRhfFieldName } from "@calcom/lib/getValidRhfFieldName";
+import { nonEmptyString } from "@calcom/prisma/zod-utils";
 
 import { fieldTypesConfigMap } from "./fieldTypes";
 import { getVariantsConfig, preprocessNameFieldDataWithVariant } from "./utils";
@@ -289,7 +290,7 @@ export const fieldTypesSchemaMap: Partial<
       if (fields.length === 1) {
         const field = fields[0];
         if (variantSupportedFields.includes(field.type)) {
-          const schema = stringSchema;
+          const schema = field.required ? nonEmptyString : stringSchema;
           if (!schema.safeParse(response).success) {
             ctx.addIssue({ code: z.ZodIssueCode.custom, message: m("Invalid string") });
           }
@@ -299,7 +300,7 @@ export const fieldTypesSchemaMap: Partial<
         }
       }
       fields.forEach((subField) => {
-        const schema = stringSchema;
+        const schema = subField.required ? nonEmptyString : stringSchema;
         if (!variantSupportedFields.includes(subField.type)) {
           throw new Error(`Unsupported field.type with variants: ${subField.type}`);
         }

packages/prisma/zod-utils.ts

@@ -115,14 +115,15 @@ export type BookingFieldType = FormBuilderFieldType;
 
 // Validation of user added bookingFields' responses happen using `getBookingResponsesSchema` which requires `eventType`.
 // So it is a dynamic validation and thus entire validation can't exist here
+// Note that this validation runs to validate prefill params as well, so it should consider that partial values can be there. e.g. `name` might be empty string
 export const bookingResponses = z
   .object({
     email: z.string(),
     //TODO: Why don't we move name out of bookingResponses and let it be handled like user fields?
     name: z.union([
-      nonEmptyString(),
+      z.string(),
       z.object({
-        firstName: nonEmptyString(),
+        firstName: z.string(),
         lastName: z.string().optional(),
       }),
     ]),