优惠劵完善

YD_Event.Application/Coupon/CouponService.cs

@@ -36,29 +36,56 @@ public class CouponService : BaseService<YD_Event.Core.Entities.Coupon>, ITransi
         // 先获取实体列表
         var entityList = await query.ToPagedListAsync(input);
         
-        // 转换并填充赛事名称
-        var resultList = new List<CouponPageOutput>();
-        foreach (var item in entityList.Rows)
+        // 获取所有相关的赛事ID
+        var allEventIds = entityList.Rows
+            .Where(x => !string.IsNullOrEmpty(x.EventIds))
+            .SelectMany(x => x.EventIds.Split(',', StringSplitOptions.RemoveEmptyEntries))
+            .Select(long.Parse)
+            .Distinct()
+            .ToList();
+
+        var eventMap = new Dictionary<long, string>();
+        if (allEventIds.Any())
         {
-            var output = item.Adapt<CouponPageOutput>();
-            output.EventIds = string.IsNullOrEmpty(item.EventIds) 
+            var events = await _eventRepository.AsQueryable()
+                .Where(x => allEventIds.Contains(x.Id))
+                .ToListAsync();
+            eventMap = events.ToDictionary(x => x.Id, x => x.EventName);
+        }
+
+        // 转换并填充赛事名称
+        var resultList = entityList.Rows.Select(item => 
+        {
+            var eventIdList = string.IsNullOrEmpty(item.EventIds) 
                 ? new List<long>() 
                 : item.EventIds.Split(',', StringSplitOptions.RemoveEmptyEntries).Select(long.Parse).ToList();
             
-            if (output.EventIds.Any())
+            var eventNames = "通用";
+            if (eventIdList.Any())
             {
-                var eventNames = await _eventRepository.AsQueryable()
-                    .Where(x => output.EventIds.Contains(x.Id))
-                    .Select(x => x.EventName)
-                    .ToListAsync();
-                output.EventNames = string.Join("，", eventNames);
+                var names = eventIdList
+                    .Where(id => eventMap.ContainsKey(id))
+                    .Select(id => eventMap[id]);
+                eventNames = string.Join("，", names);
             }
-            else
+
+            return new CouponPageOutput
             {
-                output.EventNames = "通用";
-            }
-            resultList.Add(output);
-        }
+                Id = item.Id,
+                Name = item.Name,
+                Type = item.Type,
+                Value = item.Value,
+                StartTime = item.StartTime,
+                EndTime = item.EndTime,
+                RedemptionCode = item.RedemptionCode,
+                TotalQuantity = item.TotalQuantity,
+                ClaimedQuantity = item.ClaimedQuantity,
+                UsedQuantity = item.UsedQuantity,
+                CreatedTime = item.CreatedTime,
+                EventIds = eventIdList,
+                EventNames = eventNames
+            };
+        }).ToList();
 
         return new CouponPageResult
         {