修改时间比较函数

models/response/purchase/purchase.go

@@ -41,10 +41,10 @@ func (p PurchaseList) Len() int {
 }
 
 func (p PurchaseList) Less(i, j int) bool {
-	//return true
-	time1, _ := unix.TimeToTimespec(p[i].Time)
-	time2, _ := unix.TimeToTimespec(p[j].Time)
-	return unix.TimespecToNsec(time1) > unix.TimespecToNsec(time2)
+	if p[i].Time.Before(p[j].Time) {
+		return false
+	}
+	return true
 }
 
 func (p PurchaseList) Swap(i, j int) {