优化后台列表搜索

backend/internal/modules/listing/dto.go

@@ -73,6 +73,7 @@ type TransferOwnerRequest struct {
 
 type AdminListQuery struct {
 	OwnerID      uint64
+	Keyword      string
 	Status       string
 	ReviewStatus string
 	Limit        int

backend/internal/modules/listing/handler_parse.go

@@ -71,6 +71,7 @@ func parseAdminListQuery(c *gin.Context) (AdminListQuery, bool) {
 		}
 		query.PageSize = value
 	}
+	query.Keyword = strings.TrimSpace(c.Query("keyword"))
 	query.Status = c.Query("status")
 	query.ReviewStatus = c.Query("review_status")
 	return query, true

backend/internal/modules/listing/query.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"strconv"
+	"strings"
 	"time"
 
 	"hfb_sys/backend/internal/model"
@@ -56,6 +57,25 @@ func (r *Repository) applyAdminListFilters(db *gorm.DB, query AdminListQuery) *g
 	if query.OwnerID > 0 {
 		db = db.Where("l.owner_id = ?", query.OwnerID)
 	}
+	if keyword := strings.TrimSpace(query.Keyword); keyword != "" {
+		like := "%" + keyword + "%"
+		if id, err := strconv.ParseUint(keyword, 10, 64); err == nil {
+			db = db.Where(
+				`(l.listing_no LIKE ? OR EXISTS (SELECT 1 FROM rental_orders AS o WHERE o.listing_id = l.id AND o.order_no LIKE ?) OR l.id = ? OR l.account_id = ? OR l.owner_id = ?)`,
+				like,
+				like,
+				id,
+				id,
+				id,
+			)
+		} else {
+			db = db.Where(
+				`(l.listing_no LIKE ? OR EXISTS (SELECT 1 FROM rental_orders AS o WHERE o.listing_id = l.id AND o.order_no LIKE ?))`,
+				like,
+				like,
+			)
+		}
+	}
 	if query.Status != "" {
 		db = db.Where("l.status = ?", query.Status)
 	}