78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
package models
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import (
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"blog/config"
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"sort"
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"strings"
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)
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type Category struct {
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Name string
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Quantity int
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Articles Articles
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}
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type Categories []Category
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func GetCategoryName(path string) string {
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var categoryName string
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newPath := strings.Replace(path, config.Cfg.DocumentContentDir+"/", "", 1)
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if strings.Index(newPath, "/") == -1 { //文件在根目录下(content/)没有分类名称
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categoryName = "未分类"
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} else {
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categoryName = strings.Split(newPath, "/")[0]
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}
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return categoryName
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}
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// GroupByCategory 按类别对文章进行分组
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func GroupByCategory(articles *Articles, articleQuantity int) Categories {
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var categories Categories
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categoryMap := make(map[string]Articles)
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// 根据类别将文章分组
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for _, article := range *articles {
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_, existedCategory := categoryMap[article.Category]
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if existedCategory {
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categoryMap[article.Category] = append(categoryMap[article.Category], article)
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} else {
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categoryMap[article.Category] = Articles{article}
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}
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}
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// 遍历类别映射，构建分类信息
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for categoryName, articles := range categoryMap {
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articleLen := len(articles)
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var articleList Articles
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// 根据指定数量截取文章列表
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if articleQuantity <= 0 {
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articleList = articles
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} else {
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if articleQuantity > articleLen {
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articleList = articles[0:articleLen]
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} else {
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articleList = articles[0:articleQuantity]
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}
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}
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// 添加分类信息到结果集
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categories = append(categories, Category{
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Name: categoryName,
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Quantity: articleLen,
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Articles: articleList,
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})
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}
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// 对分类结果集进行排序
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sort.Sort(categories)
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return categories
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}
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func (c Categories) Len() int { return len(c) }
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func (c Categories) Less(i, j int) bool { return c[i].Quantity > c[j].Quantity }
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func (c Categories) Swap(i, j int) { c[i], c[j] = c[j], c[i] }
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