feat 初始化

utils/page.go

@@ -0,0 +1,62 @@
+package utils
+
+import (
+	"math"
+
+	"git.hlsq.asia/alex/proto/proto/rs/rscommon"
+	"gorm.io/gen/field"
+)
+
+func PageGetOffSet(page *rscommon.PageArgs) int {
+	if page == nil || page.PageSize <= 0 {
+		return 0
+	}
+	return int((page.PageIndex - 1) * page.PageSize)
+}
+
+func CalcTotalPage(totalCount, pageSize int32) int32 {
+	if pageSize <= 0 {
+		return 0
+	}
+	return int32(math.Ceil(float64(totalCount) / float64(pageSize)))
+}
+
+func BuildPageInfoReply(page *rscommon.PageArgs, totalCount int32) *rscommon.PageInfoReply {
+	if page == nil {
+		page = &rscommon.PageArgs{PageIndex: 1, PageSize: 10}
+	}
+	if page.PageSize <= 0 {
+		page.PageSize = 10
+	}
+	if page.PageIndex <= 0 {
+		page.PageIndex = 1
+	}
+	if totalCount <= 0 {
+		totalCount = 0
+		return &rscommon.PageInfoReply{
+			PageIndex:  page.PageIndex,
+			PageSize:   page.PageSize,
+			TotalCount: totalCount,
+		}
+	}
+	return &rscommon.PageInfoReply{
+		PageIndex:  page.PageIndex,
+		PageSize:   page.PageSize,
+		TotalCount: totalCount,
+	}
+}
+
+func GetOrderInfo(orderList []*rscommon.OrderInfo, getField func(field string) field.OrderExpr) []field.Expr {
+	orders := make([]field.Expr, 0, len(orderList))
+	for _, order := range orderList {
+		expr := getField(order.Field)
+		if expr != nil {
+			if order.Asc {
+				orders = append(orders, expr.Asc())
+			} else {
+				orders = append(orders, expr.Desc())
+			}
+		}
+	}
+	return orders
+}