修复其他考试提交

src/Jiaowu.Api/Controllers/OtherExamsController.cs

@@ -146,7 +146,10 @@ public sealed class OtherExamsController(AppDbContext db, ICurrentUserDataScope
     {
         var numbers = inputs.Select(x => x.StudentNumber.Trim()).ToList();
         if (numbers.Count != numbers.Distinct(StringComparer.OrdinalIgnoreCase).Count()) return ValidationProblem("同一考试批次中学生不能重复出现。");
-        var students = await db.Students.Where(x => numbers.Contains(x.StudentNumber)).ToDictionaryAsync(x => x.StudentNumber, StringComparer.OrdinalIgnoreCase, ct);
+        var studentRows = await db.Students
+            .Where(x => numbers.Contains(x.StudentNumber))
+            .ToListAsync(ct);
+        var students = studentRows.ToDictionary(x => x.StudentNumber, StringComparer.OrdinalIgnoreCase);
         if (students.Count != numbers.Count) return ValidationProblem("存在不存在的学号，请先检查学生档案。");
         foreach (var item in inputs)
         {
@@ -157,11 +160,30 @@ public sealed class OtherExamsController(AppDbContext db, ICurrentUserDataScope
         var beforeCount = await db.OtherExamResults.AsNoTracking()
             .Where(x => x.OtherExamBatchId != batch.Id && studentIds.Contains(x.StudentId) && (x.OtherExamBatch!.ExamCode == batch.ExamCode || (x.OtherExamBatch.ExamCode == null && batch.ExamCode == null && x.OtherExamBatch.Name == batch.Name)) && (x.OtherExamBatch.ExamDate < batch.ExamDate || (x.OtherExamBatch.ExamDate == batch.ExamDate && x.OtherExamBatch.CreatedAt < batch.CreatedAt)))
             .GroupBy(x => x.StudentId).Select(x => new { StudentId = x.Key, Count = x.Count() }).ToDictionaryAsync(x => x.StudentId, x => x.Count, ct);
-        db.OtherExamResults.RemoveRange(batch.Results);
-        batch.Status = OtherExamBatchStatus.Draft;
-        batch.Results = inputs.Select(x => { var student = students[x.StudentNumber.Trim()]; return new OtherExamResult { OtherExamBatchId = batch.Id, StudentId = student.Id, AttemptNumber = (beforeCount.GetValueOrDefault(student.Id) + 1), Score = x.Score, Level = Normalize(x.Level), IsPassed = x.IsPassed, Notes = Normalize(x.Notes) }; }).ToList();
-        await db.SaveChangesAsync(ct);
-        return null;
+        return await db.ExecuteInRetriableTransactionAsync<ActionResult?>(async transaction =>
+        {
+            db.OtherExamResults.RemoveRange(batch.Results);
+            batch.Status = OtherExamBatchStatus.Draft;
+            await db.SaveChangesAsync(ct);
+
+            batch.Results = inputs.Select(x =>
+            {
+                var student = students[x.StudentNumber.Trim()];
+                return new OtherExamResult
+                {
+                    OtherExamBatchId = batch.Id,
+                    StudentId = student.Id,
+                    AttemptNumber = beforeCount.GetValueOrDefault(student.Id) + 1,
+                    Score = x.Score,
+                    Level = Normalize(x.Level),
+                    IsPassed = x.IsPassed,
+                    Notes = Normalize(x.Notes)
+                };
+            }).ToList();
+            await db.SaveChangesAsync(ct);
+            await transaction.CommitAsync(ct);
+            return null;
+        }, ct);
     }
 
     private static string[] HeadersFor(OtherExamBatch batch) => batch.MetricKind switch