교육과정, 강의등록 완료1

src/app/admin/courses/page.tsx

@@ -6,6 +6,24 @@ import CourseRegistrationModal from "./CourseRegistrationModal";
 import ChevronDownSvg from "@/app/svgs/chevrondownsvg";
 import { getCourses, type Course } from "./mockData";
 
+// 날짜를 yyyy-mm-dd 형식으로 변환하는 함수
+const formatDate = (dateString: string): string => {
+  if (!dateString) return '';
+  try {
+    const date = new Date(dateString);
+    const year = date.getFullYear();
+    const month = String(date.getMonth() + 1).padStart(2, '0');
+    const day = String(date.getDate()).padStart(2, '0');
+    return `${year}-${month}-${day}`;
+  } catch {
+    // 이미 yyyy-mm-dd 형식이거나 파싱 실패 시 원본 반환
+    if (dateString.includes('T')) {
+      return dateString.split('T')[0];
+    }
+    return dateString;
+  }
+};
+
 export default function AdminCoursesPage() {
   const [courses, setCourses] = useState<Course[]>([]);
   const [isLoading, setIsLoading] = useState(true);
@@ -199,7 +217,7 @@ export default function AdminCoursesPage() {
                                 {course.instructorName}
                               </td>
                               <td className="border-t border-r border-[#dee1e6] px-4 text-[13px] leading-[1.5] text-[#1b2027] whitespace-nowrap">
-                                {course.createdAt}
+                                {formatDate(course.createdAt)}
                               </td>
                               <td className="border-t border-[#dee1e6] px-4 text-left text-[13px] leading-[1.5] text-[#1b2027] whitespace-nowrap">
                                 {course.hasLessons ? (