做权限管理模块
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package models
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import (
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"fmt"
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"strings"
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"time"
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"github.com/beego/beego/v2/client/orm"
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)
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// RoleMenu 角色-菜单关联表模型
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type RoleMenu struct {
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Id int `orm:"auto" json:"id"`
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RoleId int `orm:"column(role_id)" json:"role_id"`
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MenuId int `orm:"column(menu_id)" json:"menu_id"`
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CreateTime time.Time `orm:"column(create_time);type(datetime);auto_now_add" json:"create_time"`
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CreateBy string `orm:"column(create_by);size(50);null" json:"create_by"`
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}
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// TableName 指定表名
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func (r *RoleMenu) TableName() string {
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return "yz_role_menus"
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}
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// RolePermission 角色权限响应结构（包含菜单信息）
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type RolePermission struct {
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RoleId int `json:"role_id"`
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RoleName string `json:"role_name"`
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MenuIds []int `json:"menu_ids"`
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Permissions []string `json:"permissions"` // 权限标识列表
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}
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// MenuPermission 菜单权限信息
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type MenuPermission struct {
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MenuId int `json:"menu_id"`
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MenuName string `json:"menu_name"`
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Path string `json:"path"`
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MenuType int `json:"menu_type"` // 1: 页面菜单, 2: API接口
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Permission string `json:"permission"` // 权限标识
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ParentId int `json:"parent_id"`
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}
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func init() {
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orm.RegisterModel(new(RoleMenu))
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}
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// GetRoleMenus 获取指定角色的所有菜单权限
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func GetRoleMenus(roleId int) ([]int, error) {
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o := orm.NewOrm()
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var menuIds []int
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_, err := o.Raw("SELECT menu_id FROM yz_role_menus WHERE role_id = ?", roleId).QueryRows(&menuIds)
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if err != nil {
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return nil, fmt.Errorf("获取角色菜单失败: %v", err)
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}
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return menuIds, nil
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}
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// GetRolePermissions 获取角色的详细权限信息（包括菜单和API权限）
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func GetRolePermissions(roleId int) (*RolePermission, error) {
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o := orm.NewOrm()
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// 获取角色信息
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var role Role
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err := o.Raw("SELECT * FROM yz_roles WHERE role_id = ? AND delete_time IS NULL", roleId).QueryRow(&role)
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if err != nil {
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return nil, fmt.Errorf("角色不存在: %v", err)
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}
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// 获取角色关联的所有菜单ID
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menuIds, err := GetRoleMenus(roleId)
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if err != nil {
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return nil, err
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}
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// 获取权限标识列表
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var permissions []string
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if len(menuIds) > 0 {
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// 构建IN查询的占位符和参数
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placeholders := make([]string, len(menuIds))
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args := make([]interface{}, len(menuIds))
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for i, id := range menuIds {
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placeholders[i] = "?"
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args[i] = id
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}
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query := fmt.Sprintf("SELECT DISTINCT permission FROM yz_menus WHERE id IN (%s) AND permission IS NOT NULL AND permission != ''", strings.Join(placeholders, ","))
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_, err = o.Raw(query, args...).QueryRows(&permissions)
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if err != nil {
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return nil, fmt.Errorf("获取权限标识失败: %v", err)
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}
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}
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return &RolePermission{
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RoleId: role.RoleId,
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RoleName: role.RoleName,
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MenuIds: menuIds,
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Permissions: permissions,
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}, nil
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}
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// GetAllMenuPermissions 获取所有菜单权限列表（用于分配权限时展示）
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func GetAllMenuPermissions() ([]*MenuPermission, error) {
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o := orm.NewOrm()
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var menus []*MenuPermission
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_, err := o.Raw("SELECT id as menu_id, name as menu_name, path, menu_type, permission, parent_id FROM yz_menus WHERE status = 1 ORDER BY parent_id, `order`").QueryRows(&menus)
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if err != nil {
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return nil, fmt.Errorf("获取菜单列表失败: %v", err)
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}
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return menus, nil
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}
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// AssignRolePermissions 为角色分配权限（菜单）
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func AssignRolePermissions(roleId int, menuIds []int, createBy string) error {
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o := orm.NewOrm()
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// 先删除该角色的所有权限（使用更快的方式）
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_, err := o.Raw("DELETE FROM yz_role_menus WHERE role_id = ?", roleId).Exec()
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if err != nil {
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return fmt.Errorf("删除旧权限失败: %v", err)
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}
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// 如果没有新权限，直接返回
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if len(menuIds) == 0 {
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return nil
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}
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// 使用更高效的批量插入方式
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// 如果数据量太大，分批插入以避免超时
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batchSize := 500 // 每批500条，MySQL可以高效处理
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total := len(menuIds)
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for i := 0; i < total; i += batchSize {
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end := i + batchSize
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if end > total {
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end = total
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}
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batch := menuIds[i:end]
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// 构建批量INSERT语句
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query := "INSERT INTO yz_role_menus (role_id, menu_id, create_by) VALUES "
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values := make([]interface{}, 0, len(batch)*3)
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placeholders := make([]string, 0, len(batch))
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for _, menuId := range batch {
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placeholders = append(placeholders, "(?, ?, ?)")
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values = append(values, roleId, menuId, createBy)
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}
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query += strings.Join(placeholders, ", ")
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// 执行批量插入
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_, err = o.Raw(query, values...).Exec()
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if err != nil {
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return fmt.Errorf("插入新权限失败(批次 %d/%d): %v", i/batchSize+1, (total+batchSize-1)/batchSize, err)
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}
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}
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return nil
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}
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// GetUserPermissions 获取用户的所有权限（通过用户角色）
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func GetUserPermissions(userId int) (*RolePermission, error) {
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o := orm.NewOrm()
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// 获取用户信息
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var user User
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err := o.Raw("SELECT * FROM yz_users WHERE id = ? AND delete_time IS NULL", userId).QueryRow(&user)
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if err != nil {
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return nil, fmt.Errorf("用户不存在: %v", err)
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}
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// 如果用户没有角色，返回空权限
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if user.Role == 0 {
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return &RolePermission{
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RoleId: 0,
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RoleName: "无角色",
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MenuIds: []int{},
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Permissions: []string{},
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}, nil
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}
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// 获取角色权限
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return GetRolePermissions(user.Role)
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}
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// CheckUserPermission 检查用户是否拥有指定权限
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func CheckUserPermission(userId int, permission string) (bool, error) {
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if permission == "" {
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return true, nil // 空权限标识表示不需要权限控制
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}
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userPerms, err := GetUserPermissions(userId)
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if err != nil {
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return false, err
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}
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// 检查权限列表中是否包含指定权限
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for _, perm := range userPerms.Permissions {
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if perm == permission {
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return true, nil
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}
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}
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return false, nil
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}
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// MenuTreeNode 菜单树节点（包含子节点）
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type MenuTreeNode struct {
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Id int `json:"id"`
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Name string `json:"name"`
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Path string `json:"path"`
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ParentId int `json:"parent_id"`
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Icon string `json:"icon"`
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Order int `json:"order"`
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Status int8 `json:"status"`
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ComponentPath string `json:"component_path"`
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IsExternal int8 `json:"is_external"`
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ExternalUrl string `json:"external_url"`
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MenuType int8 `json:"menu_type"`
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Permission string `json:"permission"`
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Children []*MenuTreeNode `json:"children"`
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}
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// GetUserMenuTree 获取用户有权限访问的菜单树（仅页面菜单）
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func GetUserMenuTree(userId int) ([]*MenuTreeNode, error) {
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o := orm.NewOrm()
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// 获取用户角色
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var user User
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err := o.Raw("SELECT * FROM yz_users WHERE id = ? AND delete_time IS NULL", userId).QueryRow(&user)
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if err != nil {
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return nil, fmt.Errorf("用户不存在: %v", err)
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}
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if user.Role == 0 {
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return []*MenuTreeNode{}, nil
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}
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// 获取角色的菜单ID列表
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menuIds, err := GetRoleMenus(user.Role)
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if err != nil {
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return nil, err
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}
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if len(menuIds) == 0 {
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return []*MenuTreeNode{}, nil
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}
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// 获取菜单信息（仅页面菜单）
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var menus []*Menu
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// 构建IN查询的占位符和参数
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placeholders := make([]string, len(menuIds))
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args := make([]interface{}, len(menuIds))
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for i, id := range menuIds {
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placeholders[i] = "?"
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args[i] = id
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}
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query := fmt.Sprintf("SELECT * FROM yz_menus WHERE id IN (%s) AND menu_type = 1 AND status = 1 ORDER BY parent_id, `order`", strings.Join(placeholders, ","))
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_, err = o.Raw(query, args...).QueryRows(&menus)
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if err != nil {
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return nil, fmt.Errorf("获取菜单列表失败: %v", err)
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}
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// 转换为MenuTreeNode
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var nodes []*MenuTreeNode
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for _, m := range menus {
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nodes = append(nodes, &MenuTreeNode{
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Id: m.Id,
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Name: m.Name,
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Path: m.Path,
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ParentId: m.ParentId,
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Icon: m.Icon,
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Order: m.Order,
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Status: m.Status,
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ComponentPath: m.ComponentPath,
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IsExternal: m.IsExternal,
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ExternalUrl: m.ExternalUrl,
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MenuType: m.MenuType,
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Permission: m.Permission,
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Children: []*MenuTreeNode{},
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})
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}
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// 构建菜单树
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return buildMenuTree(nodes, 0), nil
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}
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// buildMenuTree 构建菜单树
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func buildMenuTree(menus []*MenuTreeNode, parentId int) []*MenuTreeNode {
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var tree []*MenuTreeNode
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for _, menu := range menus {
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if menu.ParentId == parentId {
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menu.Children = buildMenuTree(menus, menu.Id)
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tree = append(tree, menu)
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}
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}
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return tree
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}
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