Victor_Jay
0b8f6f890d
分类：Model/Repo/Service/Controller + 管理后台树形页面 + 首页导航栏
标签：Model/Repo/Service/Controller + /tags/{slug} 落地页 + 写文章页输入
Post 加 CategoryID，Create/Update 支持分类和标签
SQL 迁移含 categories/tags/post_tags 表及预设未分类
76 lines
1.7 KiB
Go
76 lines
1.7 KiB
Go
package service
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import "metazone.cc/mce/internal/model"
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// CategoryStore 分类仓库接口（ISP）
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type CategoryStore interface {
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Create(c *model.Category) error
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Update(c *model.Category) error
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Delete(id uint) error
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FindByID(id uint) (*model.Category, error)
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ListAll() ([]model.Category, error)
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GetLeaves() ([]model.Category, error)
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}
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// CategoryService 分类业务逻辑
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type CategoryService struct {
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repo CategoryStore
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}
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// NewCategoryService 构造函数
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func NewCategoryService(repo CategoryStore) *CategoryService {
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return &CategoryService{repo: repo}
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}
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// Create 创建分类
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func (s *CategoryService) Create(c *model.Category) error {
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return s.repo.Create(c)
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}
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// Update 更新分类
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func (s *CategoryService) Update(c *model.Category) error {
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return s.repo.Update(c)
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}
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// Delete 删除分类
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func (s *CategoryService) Delete(id uint) error {
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return s.repo.Delete(id)
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}
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// Tree 获取两级分类树
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func (s *CategoryService) Tree() ([]model.Category, error) {
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all, err := s.repo.ListAll()
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if err != nil {
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return nil, err
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}
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// 构建树：parent_id=nil 的为根节点
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parentMap := make(map[uint]*model.Category)
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var roots []*model.Category
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for i := range all {
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c := &all[i]
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c.Children = []model.Category{}
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parentMap[c.ID] = c
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if c.ParentID == nil {
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roots = append(roots, c)
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}
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}
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for i := range all {
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c := &all[i]
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if c.ParentID != nil {
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if parent, ok := parentMap[*c.ParentID]; ok {
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parent.Children = append(parent.Children, *c)
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}
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}
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}
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result := make([]model.Category, len(roots))
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for i, r := range roots {
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result[i] = *r
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}
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return result, nil
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}
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// GetLeaves 获取所有叶子分类（用于写文章页下拉选择）
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func (s *CategoryService) GetLeaves() ([]model.Category, error) {
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return s.repo.GetLeaves()
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}
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