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src/views/InstructorView.js

@@ -486,7 +486,9 @@ export function setupInstructorEvents() {
             const heatmapBody = document.getElementById('heatmap-body');
             const heatmapHeader = document.getElementById('heatmap-header');
 
-            if (!data || !data.users) {
+            const users = Array.isArray(data) ? data : (data?.users ? Object.values(data.users) : []);
+
+            if (users.length === 0) {
                 heatmapBody.innerHTML = '<tr><td colspan="100" class="text-center py-10 text-gray-500">尚無學員加入</td></tr>';
                 return;
             }
@@ -497,7 +499,7 @@ export function setupInstructorEvents() {
 
             // This part needs real logic based on your data structure
             // For now, let's just list users to prove it works
-            Object.values(data.users).forEach(user => {
+            users.forEach(user => {
                 const tr = document.createElement('tr');
                 tr.innerHTML = `<td class="p-3 text-white">${user.nickname || 'Unknown'}</td>`;
                 heatmapBody.appendChild(tr);