update

app/Exports/CommonExport.php

@@ -77,7 +77,13 @@ class CommonExport implements FromCollection, WithStyles, WithColumnWidths, With
         }
 
         $index = 1;
+        // 第一遍：处理除了历史课程之外的所有字段
         foreach ($this->fields as $field => $label) {
+            if (str_contains($field, 'history_courses')) {
+                // 跳过历史课程，稍后处理
+                continue;
+            }
+
             if (str_contains($field, 'users') && !str_contains($field, 'project_users')) {
                 $this->hasUsersField = true;
                 // 展开学员信息为多列
@@ -92,18 +98,24 @@ class CommonExport implements FromCollection, WithStyles, WithColumnWidths, With
                     $this->expandedFields[$subField] = $subLabel;
                     $index++;
                 }
-            } elseif (str_contains($field, 'history_courses')) {
+            } else {
+                $this->expandedFields[$field] = $label;
+                $index++;
+            }
+        }
+
+        // 第二遍：处理历史课程字段，放在最后
+        foreach ($this->fields as $field => $label) {
+            if (str_contains($field, 'history_courses')) {
                 $this->hasHistoryCoursesField = true;
                 // 展开历史课程信息为多列
                 foreach (self::HISTORY_COURSES_SUB_COLUMNS as $subField => $subLabel) {
                     $this->expandedFields[$subField] = $subLabel;
                     $index++;
                 }
-            } else {
-                $this->expandedFields[$field] = $label;
-                $index++;
             }
         }
+
         $this->totalColumns = count($this->expandedFields);
     }