各类申请

src/Jiaowu.Api/Controllers/AttendanceController.cs

@@ -155,8 +155,32 @@ public sealed class AttendanceController(
             .FirstOrDefaultAsync(cancellationToken);
         if (sheet is null) return NotFound();
 
+        // Load exemption/deferred in separate query to avoid SQL APPLY (unsupported on SQLite)
+        var exemptStudentIds = await db.CourseExemptions
+            .Where(e => e.TeachingTaskId == sheet.TeachingTaskId && e.Status == ApprovalStatus.Approved)
+            .Select(e => e.StudentId).ToHashSetAsync(cancellationToken);
+        var deferredStudentIds = await db.DeferredExams
+            .Where(e => e.TeachingTaskId == sheet.TeachingTaskId && e.Status == ApprovalStatus.Approved)
+            .Select(e => e.StudentId).ToHashSetAsync(cancellationToken);
+
         var canEdit = sheet.Status == AttendanceSheetStatus.Draft;
-        return Ok(new { Sheet = sheet, CanEdit = canEdit });
+        return Ok(new
+        {
+            Sheet = new
+            {
+                sheet.Id, sheet.TeachingTaskId, sheet.Name, sheet.AttendanceDate,
+                sheet.Status, sheet.Notes, sheet.SubmittedAt,
+                sheet.TaskNumber, sheet.TaskName, sheet.CourseCode, sheet.CourseName,
+                Records = sheet.Records.Select(r => new
+                {
+                    r.StudentId, r.StudentNumber, r.Name, r.ClassName,
+                    r.Status, r.Notes,
+                    IsExempt = exemptStudentIds.Contains(r.StudentId),
+                    IsDeferred = deferredStudentIds.Contains(r.StudentId)
+                })
+            },
+            CanEdit = canEdit
+        });
     }
 
     [HttpPut("sheets/{id:guid}/records")]
@@ -430,8 +454,7 @@ public sealed class AttendanceController(
         var source = db.AttendanceRecords.AsNoTracking()
             .Where(r =>
                 r.AttendanceSheet!.Status == AttendanceSheetStatus.Submitted &&
-                r.Student!.AdministrativeClassId != null &&
-                targetClassIds.Contains(r.Student.AdministrativeClassId));
+                targetClassIds.Contains(r.Student!.AdministrativeClassId));
         if (academicTermId.HasValue)
             source = source.Where(r =>
                 r.AttendanceSheet!.TeachingTask!.AcademicTermId == academicTermId);