1、修改采购报表（按商品）的excel导出功能，增加"一级分类"、"二级分类"，同一个商品下每个采购单都填充商品信息；

app/admin/models/category.go

@@ -231,3 +231,48 @@ func TransformErpCategoryIds(categoryIds []uint32) ([]uint32, error) {
 
 	return result, nil
 }
+
+// CategoryLevels 代表分类层级信息
+type CategoryLevels struct {
+	Level1 Category `json:"level1"`
+	Level2 Category `json:"level2,omitempty"`
+	Level3 Category `json:"level3,omitempty"`
+}
+
+// GetCategoryLevels 根据商品分类ID获取分类层级信息
+func GetCategoryLevels(categoryID uint32) (CategoryLevels, error) {
+	var levels CategoryLevels
+
+	// 维持当前分类的ID
+	currentID := categoryID
+	levelCount := 0
+
+	for currentID != 0 && levelCount < 3 {
+		var currentCategory Category
+
+		// 查询当前分类
+		err := orm.Eloquent.Model(&Category{}).Where("id = ?", currentID).First(&currentCategory).Error
+		if err != nil {
+			return levels, err
+		}
+
+		// 根据分类编号的长度判断层级
+		numberLength := len(currentCategory.Number)
+		switch numberLength {
+		case 3:
+			levels.Level1 = currentCategory // 一级分类
+		case 6:
+			levels.Level2 = currentCategory // 二级分类
+		case 9:
+			levels.Level3 = currentCategory // 三级分类
+		default:
+			return levels, nil // 超过9位返回空
+		}
+
+		// 移动到上级分类
+		currentID = currentCategory.Pid
+		levelCount++
+	}
+
+	return levels, nil
+}

app/admin/models/purchase.go

@@ -4924,9 +4924,9 @@ func reportByCommodityExport(req *ErpPurchaseReportByCommodityResp) (string, err
 	fmt.Println("url fileName:", url+fileName)
 
 	// 组合标题栏数据
-	title1 := []interface{}{"商品名称", "商品分类", "单据编号", "类型", "店铺名称", "供应商", "经手人", "制单人", "审核时间",
+	title1 := []interface{}{"商品名称", "商品分类", "", "", "单据编号", "类型", "店铺名称", "供应商", "经手人", "制单人", "审核时间",
 		"计划采购", "", "", "已执行", "", "", "未执行", ""}
-	title2 := []interface{}{"商品名称", "商品分类", "单据编号", "类型", "店铺名称", "供应商", "经手人", "制单人", "审核时间",
+	title2 := []interface{}{"商品名称", "一级分类", "二级分类", "三级分类", "单据编号", "类型", "店铺名称", "供应商", "经手人", "制单人", "审核时间",
 		"采购金额", "采购单价", "采购数量", "已执行金额", "执行单价", "已执行数量", "未执行金额", "未执行数量"}
 	for i, _ := range title1 {
 		cell, _ := excelize.CoordinatesToCellName(1+i, 1)
@@ -4948,9 +4948,12 @@ func reportByCommodityExport(req *ErpPurchaseReportByCommodityResp) (string, err
 	var row2 []interface{}
 	nExcelStartRow := 0
 	for _, commodityData := range req.List {
+		categoryLevels, _ := GetCategoryLevels(commodityData.ErpCategoryID)
 		row1 = []interface{}{
 			commodityData.ErpCommodityName,   // 商品名称
-			commodityData.ErpCategoryName,    // 商品分类
+			categoryLevels.Level1.Name,       // 一级分类
+			categoryLevels.Level2.Name,       // 二级分类
+			categoryLevels.Level3.Name,       // 三级分类
 			"",                               // 单据编号
 			"",                               // 类型
 			"",                               // 店铺名称
@@ -4994,8 +4997,10 @@ func reportByCommodityExport(req *ErpPurchaseReportByCommodityResp) (string, err
 			}
 
 			row2 = []interface{}{
-				"",                           // 商品名称
+				commodityData.ErpCommodityName, // 商品名称
-				"",                           // 商品分类
+				categoryLevels.Level1.Name,     // 一级分类
+				categoryLevels.Level2.Name,     // 二级分类
+				categoryLevels.Level3.Name,     // 三级分类
 				orderData.SerialNumber,         // 单据编号
 				orderType,                      // 类型
 				orderData.StoreName,            // 店铺名称
@@ -5025,7 +5030,7 @@ func reportByCommodityExport(req *ErpPurchaseReportByCommodityResp) (string, err
 	}
 
 	totalData := "订单数:" + strconv.FormatInt(int64(req.Total), 10)
-	end := []interface{}{totalData, "", "", "", "", "", "", "", "",
+	end := []interface{}{totalData, "", "", "", "", "", "", "", "", "", "",
 		req.PlanAmount,         // 计划采购金额
 		"--",                   // 计划采购单价
 		req.PlanCount,          // 计划采购数量
@@ -5052,30 +5057,30 @@ func reportByCommodityExport(req *ErpPurchaseReportByCommodityResp) (string, err
 
 	// 合并单元格
 	_ = file.MergeCell(fSheet, "A1", "A2")
-	_ = file.MergeCell(fSheet, "B1", "B2")
+	_ = file.MergeCell(fSheet, "B1", "D1")
-	_ = file.MergeCell(fSheet, "C1", "C2")
-	_ = file.MergeCell(fSheet, "D1", "D2")
 	_ = file.MergeCell(fSheet, "E1", "E2")
 	_ = file.MergeCell(fSheet, "F1", "F2")
 	_ = file.MergeCell(fSheet, "G1", "G2")
 	_ = file.MergeCell(fSheet, "H1", "H2")
 	_ = file.MergeCell(fSheet, "I1", "I2")
+	_ = file.MergeCell(fSheet, "J1", "J2")
+	_ = file.MergeCell(fSheet, "K1", "K2")
 
-	_ = file.MergeCell(fSheet, "J1", "L1")
+	_ = file.MergeCell(fSheet, "L1", "N1")
-	_ = file.MergeCell(fSheet, "M1", "O1")
+	_ = file.MergeCell(fSheet, "O1", "Q1")
-	_ = file.MergeCell(fSheet, "P1", "Q1")
+	_ = file.MergeCell(fSheet, "R1", "S1")
 
 	//设置单元格高度
 	file.SetRowHeight("Sheet1", 1, 20)
 	file.SetRowHeight("Sheet1", 2, 20)
 
 	// 设置单元格大小
-	file.SetColWidth("Sheet1", "A", "A", 15)
+	file.SetColWidth("Sheet1", "A", "A", 30)
 	file.SetColWidth("Sheet1", "B", "B", 10)
-	file.SetColWidth("Sheet1", "C", "C", 13)
+	file.SetColWidth("Sheet1", "E", "E", 13)
-	file.SetColWidth("Sheet1", "E", "E", 25)
+	file.SetColWidth("Sheet1", "G", "G", 25)
 
-	endRow := fmt.Sprintf("Q"+"%d", nExcelStartRow+3)
+	endRow := fmt.Sprintf("S"+"%d", nExcelStartRow+3)
 	// 应用样式到整个表格
 	_ = file.SetCellStyle("Sheet1", "A1", endRow, style)