From 676fa16ae298bba63b8401e502181ab9212f4c86 Mon Sep 17 00:00:00 2001
From: Han Joker <540090808@qq.com>
Date: Tue, 23 Jul 2024 16:54:55 +0800
Subject: [PATCH] role get

---
 handlers/common/message.go |  1 +
 handlers/init.go           |  2 +
 handlers/role/handler.go   | 83 ++++++++++++++++++++++++++++++++++++++
 handlers/role/message.go   | 29 +++++++++++++
 handlers/role/router.go    |  9 +++++
 models/base.go             | 54 +++++++++++++++++++++++++
 models/role.go             | 81 ++++++++++++++++++++++++++++++++++++-
 7 files changed, 258 insertions(+), 1 deletion(-)
 create mode 100644 handlers/common/message.go
 create mode 100644 handlers/role/handler.go
 create mode 100644 handlers/role/message.go
 create mode 100644 handlers/role/router.go

diff --git a/handlers/common/message.go b/handlers/common/message.go
new file mode 100644
index 0000000..805d0c7
--- /dev/null
+++ b/handlers/common/message.go
@@ -0,0 +1 @@
+package common
diff --git a/handlers/init.go b/handlers/init.go
index 742472c..b84b7d7 100644
--- a/handlers/init.go
+++ b/handlers/init.go
@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"ginCms/handlers/role"
 	"ginCms/handlers/system"
 	"github.com/gin-gonic/gin"
 )
@@ -12,6 +13,7 @@ func InitEngine() *gin.Engine {
 
 	// 2. 注册不同模块的路由
 	system.Router(r)
+	role.Router(r)
 
 	return r
 }
diff --git a/handlers/role/handler.go b/handlers/role/handler.go
new file mode 100644
index 0000000..6b306e6
--- /dev/null
+++ b/handlers/role/handler.go
@@ -0,0 +1,83 @@
+package role
+
+import (
+	"ginCms/models"
+	"ginCms/utils"
+	"github.com/gin-gonic/gin"
+	"log"
+	"net/http"
+)
+
+func GetList(ctx *gin.Context) {
+	// 1. 解析请求消息
+	req := GetListReq{}
+	if err := ctx.ShouldBindQuery(&req); err != nil {
+		// 记录日志
+		utils.Logger().Error(err.Error())
+		// 直接响应
+		ctx.JSON(http.StatusOK, gin.H{
+			"code":    100,
+			"message": err.Error(),
+		})
+		return
+	}
+
+	// 2. 整理请求参数
+	req.Clean()
+
+	log.Println(*req.Keyword, *req.SortField, *req.SortMethod, *req.PageNum, *req.PageSize)
+
+	// 3. 基于model查询
+	rows, err := models.RoleFetchList(false, req.RoleFilter, req.Sorter, req.Pager)
+	if err != nil {
+		// 记录日志
+		utils.Logger().Error(err.Error())
+		// 直接响应
+		ctx.JSON(http.StatusOK, gin.H{
+			"code":    100,
+			"message": "查询错误",
+		})
+		return
+	}
+
+	// 4. 响应
+	ctx.JSON(http.StatusOK, gin.H{
+		"code": 0,
+		"data": rows,
+	})
+
+}
+
+func GetRow(ctx *gin.Context) {
+	// 1. 解析请求数据（消息）
+	req := GetRowReq{}
+	if err := ctx.ShouldBindQuery(&req); err != nil {
+		// 记录日志
+		utils.Logger().Error(err.Error())
+		// 直接响应
+		ctx.JSON(http.StatusOK, gin.H{
+			"code":    100,
+			"message": err.Error(),
+		})
+		return
+	}
+
+	// 2. 利用模型完成查询
+	row, err := models.RoleFetchRow(false, "`id` = ?", req.ID)
+	if err != nil {
+		// 记录日志
+		utils.Logger().Error(err.Error())
+		// 直接响应
+		ctx.JSON(http.StatusOK, gin.H{
+			"code":    100,
+			"message": "查询错误",
+		})
+		return
+	}
+
+	// 3. 响应
+	ctx.JSON(http.StatusOK, gin.H{
+		"code": 0,
+		"data": row,
+	})
+}
diff --git a/handlers/role/message.go b/handlers/role/message.go
new file mode 100644
index 0000000..1718391
--- /dev/null
+++ b/handlers/role/message.go
@@ -0,0 +1,29 @@
+package role
+
+import (
+	"ginCms/models"
+)
+
+// GetRowReq GetRow接口的请求消息类型
+type GetRowReq struct {
+	// required, 必须的
+	// gt, 数值 > 0
+	ID uint `form:"id" binding:"required,gt=0"`
+}
+
+// GetListReq GetList请求参数类型
+type GetListReq struct {
+	// 过滤
+	models.RoleFilter
+	// 排序
+	models.Sorter
+	// 翻页
+	models.Pager
+}
+
+// Clean 查询列表参数清理
+func (req *GetListReq) Clean() {
+	req.RoleFilter.Clean()
+	req.Sorter.Clean()
+	req.Pager.Clean()
+}
diff --git a/handlers/role/router.go b/handlers/role/router.go
new file mode 100644
index 0000000..eee92b1
--- /dev/null
+++ b/handlers/role/router.go
@@ -0,0 +1,9 @@
+package role
+
+import "github.com/gin-gonic/gin"
+
+func Router(r *gin.Engine) {
+	g := r.Group("role")
+	g.GET("", GetRow)      // GET /role?id=21
+	g.GET("list", GetList) // GET /role/list?
+}
diff --git a/models/base.go b/models/base.go
index 7231d50..31bc374 100644
--- a/models/base.go
+++ b/models/base.go
@@ -11,3 +11,57 @@ type Model struct {
 	UpdatedAt time.Time      `json:"updatedAt"`
 	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
 }
+
+// 通用的查询列表排序类型
+type Sorter struct {
+	// 排序字段
+	SortField *string `form:"sortField" binding:"omitempty,gt=0"`
+	// 排序方式 asc,desc
+	// oneof，多个选项之一
+	SortMethod *string `form:"sortMethod" binding:"omitempty,oneof=asc desc"`
+}
+
+// 通用的查询列表翻页类型
+type Pager struct {
+	// 页码索引
+	PageNum *int `form:"pageNum" binding:"omitempty,gt=0"`
+	// 每页记录数
+	PageSize *int `form:"pageSize" binding:"omitempty,gt=0"`
+}
+
+const (
+	PageNumDefault  = 1
+	PageSizeDefault = 10
+	PageSizeMax     = 100
+
+	SortFieldDefault  = "id"
+	SortMethodDefault = "DESC"
+)
+
+// Clean 整理Sorter
+func (s *Sorter) Clean() {
+	if s.SortField == nil {
+		temp := SortFieldDefault
+		s.SortField = &temp
+	}
+	if s.SortMethod == nil {
+		temp := SortMethodDefault
+		s.SortMethod = &temp
+	}
+}
+
+// Clean 整理Pager
+func (p *Pager) Clean() {
+	if p.PageNum == nil || *p.PageNum == 0 {
+		temp := PageNumDefault
+		p.PageNum = &temp
+	}
+	if p.PageSize == nil {
+		temp := PageSizeDefault
+		p.PageSize = &temp
+	}
+	if *p.PageSize > PageSizeMax {
+		temp := PageSizeMax
+		p.PageSize = &temp
+	}
+}
diff --git a/models/role.go b/models/role.go
index 33d161b..34ce210 100644
--- a/models/role.go
+++ b/models/role.go
@@ -1,6 +1,10 @@
 package models
 
-import "ginCms/utils"
+import (
+	"fmt"
+	"ginCms/utils"
+	"strings"
+)
 
 // Role 角色模型
 type Role struct {
@@ -12,6 +16,81 @@ type Role struct {
 	Comment string `gorm:"type:text" json:"comment"`
 }
 
+// 通用的查询列表过滤类型
+type RoleFilter struct {
+	// 指针类型表示该字段可以不填
+	// omitempty, 非零值才校验
+	// gt, 字符串长度>0
+	Keyword *string `form:"keyword" binding:"omitempty,gt=0"`
+}
+
+// Clean 整理Filter
+func (f *RoleFilter) Clean() {
+	if f.Keyword == nil {
+		temp := ""
+		f.Keyword = &temp
+	}
+}
+
+// RoleFetchList 查询列表
+// @param assoc bool 是否查询关联
+// @param filter RoleFilter 过滤参数
+// @param sorter Sorter 排序参数
+// @param pager Pager 翻页参数
+// @return []*Role Role列表
+// @return error
+func RoleFetchList(assoc bool, filter RoleFilter, sorter Sorter, pager Pager) ([]*Role, error) {
+	// 初始化query
+	query := utils.DB().Model(&Role{})
+
+	// 1. 过滤
+	if *filter.Keyword != "" {
+		query.Where("`title` LIKE ?", "%"+*filter.Keyword+"%")
+	}
+	// 其他字段过滤
+
+	// 2. 排序
+	query.Order(fmt.Sprintf("`%s` %s", *sorter.SortField, strings.ToUpper(*sorter.SortMethod)))
+
+	// 3. 翻页 offset limit
+	// 在pagesize>0时，才进行翻页
+	if *pager.PageSize > 0 {
+		// 偏移 ==（当前页码 - 1） 乘以 每页记录数
+		offset := (*pager.PageNum - 1) * *pager.PageSize
+		query.Offset(offset).Limit(*pager.PageSize)
+	}
+
+	// 4. 查询
+	var rows []*Role
+	if err := query.Find(&rows).Error; err != nil {
+		return nil, err
+	}
+
+	// 5. 关联查询
+	if assoc {
+	}
+
+	// 返回
+	return rows, nil
+}
+
+// RoleFetchRow 根据条件查询单条
+// assoc 是否查询管理数据
+// where, args 查询条件
+func RoleFetchRow(assoc bool, where any, args ...any) (*Role, error) {
+	// 查询本条
+	row := &Role{}
+	if err := utils.DB().Where(where, args...).First(&row).Error; err != nil {
+		return nil, err
+	}
+
+	// 关联查询
+	if assoc {
+	}
+
+	return row, nil
+}
+
 // 填充数据
 func roleSeed() {
 	// 构建数据