참가비 오류 수정

backend/controllers/eventController.js

@@ -199,12 +199,21 @@ exports.createEvent = async (req, res) => {
     const accessPassword = req.body.accessPassword || null;
 
     // 금액 통합: 문자열("20000.00") 또는 숫자를 허용, 0은 유효값(무료), 빈값은 null 처리
-    let feeRaw = fee ?? entryFee ?? participantFee;
+    const hasFeeField = Object.prototype.hasOwnProperty.call(req.body, 'participantFee')
+      || Object.prototype.hasOwnProperty.call(req.body, 'entryFee')
+      || Object.prototype.hasOwnProperty.call(req.body, 'fee');
     let feeParsed = null;
-    if (feeRaw !== undefined && feeRaw !== null && `${feeRaw}`.trim() !== '') {
+    if (hasFeeField) {
+      const feeRaw = fee ?? entryFee ?? participantFee;
+      if (feeRaw === undefined || feeRaw === null || `${feeRaw}`.trim() === '') {
+        feeParsed = null; // 명시적 빈값 => null 저장
+      } else {
         const num = parseFloat(`${feeRaw}`);
         feeParsed = Number.isFinite(num) ? num : null;
       }
+    } else {
+      feeParsed = null; // 생성 시 미제공이면 null 유지
+    }
 
     const event = await Event.create({
       clubId,
@@ -215,7 +224,7 @@ exports.createEvent = async (req, res) => {
       location,
       maxParticipants: maxParticipants || 0,
       eventType: eventType || 'regular',
-      participantFee: feeParsed ?? 0,
+      participantFee: feeParsed, // allowNull=true이므로 null 저장 허용
       gameCount: gameCount || 3,
       laneCount: laneCount || 1,
       status: status || 'active',
@@ -609,13 +618,20 @@ exports.updateEvent = async (req, res) => {
     if(endDate == 'Invalid Date') {
       endDate = null;
     }
-    // 금액 통합: 문자열("20000.00") 또는 숫자를 허용, 0은 유효값(무료)
-    let feeRaw = fee ?? entryFee ?? participantFee;
-    let feeParsed = null;
-    if (feeRaw !== undefined && feeRaw !== null && `${feeRaw}`.trim() !== '') {
+    // 금액 통합: 문자열("20000.00") 또는 숫자를 허용, 0은 유효값(무료), 빈값은 null 처리
+    const hasFeeField = Object.prototype.hasOwnProperty.call(req.body, 'participantFee')
+      || Object.prototype.hasOwnProperty.call(req.body, 'entryFee')
+      || Object.prototype.hasOwnProperty.call(req.body, 'fee');
+    let feeParsed = undefined; // 업데이트에서 undefined면 필드 미변경
+    if (hasFeeField) {
+      const feeRaw = fee ?? entryFee ?? participantFee;
+      if (feeRaw === undefined || feeRaw === null || `${feeRaw}`.trim() === '') {
+        feeParsed = null; // 명시적 빈값 => null로 클리어
+      } else {
         const num = parseFloat(`${feeRaw}`);
         feeParsed = Number.isFinite(num) ? num : null;
       }
+    }
 
     const updateData = {
       title,
@@ -625,7 +641,7 @@ exports.updateEvent = async (req, res) => {
       location,
       maxParticipants: maxParticipants || event.maxParticipants,
       eventType: eventType || event.eventType || 'regular',
-      participantFee: feeParsed !== null ? feeParsed : event.participantFee,
+      ...(feeParsed !== undefined ? { participantFee: feeParsed } : {}),
       gameCount: gameCount || event.gameCount,
       laneCount: laneCount || event.laneCount,
       status: status || event.status || 'active',