fix(query): 支持12位纯数字时间编号(如202609040184)商品编号的精准索引路由

backend/internal/modules/listing/admin_filter_test.go

@@ -1,6 +1,12 @@
 package listing
 
-import "testing"
+import (
+	"strings"
+	"testing"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
 
 func TestFilterAdminListingsByAssetLevels(t *testing.T) {
 	items := []ListingDTO{
@@ -92,3 +98,49 @@ func TestFilterAdminListingsBySkinGroupOnly(t *testing.T) {
 		t.Fatalf("expected only listing 2 by gold skin group, got %#v", filtered)
 	}
 }
+
+func TestApplyAdminListFiltersSmartRouting(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{DryRun: true})
+	if err != nil {
+		t.Fatalf("打开测试数据库失败: %v", err)
+	}
+	repo := &Repository{}
+
+	tests := []struct {
+		name        string
+		query       AdminListQuery
+		wantSQLFrag string
+	}{
+		{
+			name:        "12位时间计算的纯数字商品编号路由至rental_listings(listing_no)",
+			query:       AdminListQuery{Keyword: "202609040184"},
+			wantSQLFrag: "l.listing_no = ?",
+		},
+		{
+			name:        "L前缀商品编号路由至rental_listings(listing_no)",
+			query:       AdminListQuery{Keyword: "L20260905100"},
+			wantSQLFrag: "l.listing_no = ?",
+		},
+		{
+			name:        "RO前缀订单号路由至EXISTS订单唯一索引",
+			query:       AdminListQuery{Keyword: "RO202609051000"},
+			wantSQLFrag: "o.order_no = ?",
+		},
+		{
+			name:        "短数字ID路由至主键及关联ID",
+			query:       AdminListQuery{Keyword: "12345"},
+			wantSQLFrag: "l.listing_no = ? OR EXISTS (SELECT 1 FROM rental_orders AS o WHERE o.listing_id = l.id AND o.order_no = ?) OR l.id = ?",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stmt := repo.applyAdminListFilters(db.Table("rental_listings AS l"), tt.query).Find(&[]struct{}{}).Statement
+			sql := stmt.SQL.String()
+			if !strings.Contains(sql, tt.wantSQLFrag) {
+				t.Fatalf("期望 SQL 包含 %q, 实际生成: %s", tt.wantSQLFrag, sql)
+			}
+		})
+	}
+}
+

backend/internal/modules/listing/query.go

@@ -104,8 +104,8 @@ func (r *Repository) applyAdminListFilters(db *gorm.DB, query AdminListQuery) *g
 		if strings.HasPrefix(upper, "RO") || strings.HasPrefix(upper, "ORD") {
 			// 订单号：命中 rental_orders(order_no) 唯一索引
 			db = db.Where("EXISTS (SELECT 1 FROM rental_orders AS o WHERE o.listing_id = l.id AND o.order_no = ?)", keyword)
-		} else if strings.HasPrefix(upper, "L") {
-			// 商品编号：命中 rental_listings(listing_no) 唯一索引
+		} else if strings.HasPrefix(upper, "L") || (len(keyword) >= 12 && isAllDigits(keyword)) {
+			// 商品编号（如 L前缀或时间计算生成的 12位纯数字如 202609040184）：命中 rental_listings(listing_no) 唯一索引
 			db = db.Where("l.listing_no = ?", keyword)
 		} else if id, err := strconv.ParseUint(keyword, 10, 64); err == nil && id > 0 && keyword[0] != '0' && id < 100000000 {
 			db = db.Where(
@@ -277,3 +277,16 @@ func (r *Repository) nextListingNo(tx *gorm.DB, now time.Time) (string, error) {
 	}
 	return fmt.Sprintf("%s%04d", bizDate, seq), nil
 }
+
+func isAllDigits(s string) bool {
+	if s == "" {
+		return false
+	}
+	for i := 0; i < len(s); i++ {
+		if s[i] < '0' || s[i] > '9' {
+			return false
+		}
+	}
+	return true
+}
+