feat: update payer function to accept string ID and ensure proper type handling

backend/src/func/updatePayer.ts

@@ -1,22 +1,19 @@
 import { PrismaClient } from '@prisma/client'
 import { ErrorDescEnum, HttpError } from '../classes/HttpError'
 
-export default async function updatePayer(prisma: PrismaClient, id: number, name: string, address: string[], email: string, abn?: string) {
+export default async function updatePayer(prisma: PrismaClient, id: string, name: string, address: string[], email: string, abn?: string) {
 	// 验证 ABN 是否已存在
 	const existingPayer = await prisma.payer.findFirst({
 		where: {
 			payer_abn: abn
 		}
 	})
-	if (existingPayer && existingPayer.payer_id !== id) {
+	if (existingPayer && existingPayer.payer_id !== parseInt(id)) throw new HttpError(ErrorDescEnum.item_exists, 400, ['abn'])
-		// 验证 abn 是否已经是当前付款人的 abn
-		if (existingPayer.payer_id !== id) throw new HttpError(ErrorDescEnum.item_exists, 400, ['abn'])
-	}
 
 	// 验证付款人是否存在
 	const payerExists = await prisma.payer.findFirst({
 		where: {
-			payer_id: id
+			payer_id: parseInt(id)
 		}
 	})
 	if (!payerExists) throw new HttpError(ErrorDescEnum.item_not_found, 404, ['payer'])
@@ -24,7 +21,7 @@ export default async function updatePayer(prisma: PrismaClient, id: number, name
 	// 更新付款人
 	const payer = await prisma.payer.update({
 		where: {
-			payer_id: id
+			payer_id: parseInt(id)
 		},
 		data: {
 			payer_name: name,