JM-WechatMini/service/system/article.go

package system

import (
	"gorm.io/gorm"
	"miniapp/global"
	"miniapp/model/app"
	"miniapp/model/common"
	"miniapp/model/common/request"
)

type ArticleService struct{}

// GetArticleList 获取文章列表
func (a ArticleService) GetArticleList(p request.PageInfo) (list []common.Article, total int64, err error) {
	err = global.GVA_DB.Scopes(Page(p.Page, p.PageSize)).Find(&list).Offset(-1).Limit(-1).Count(&total).Error
	return
}

// CreateArticle 创建文章
func (a ArticleService) CreateArticle(article *common.Article) (err error) {
	return global.GVA_DB.Create(&article).Error
}

// UpdateArticle 更新文章
func (a ArticleService) UpdateArticle(article *common.Article) (err error) {
	return global.GVA_DB.Updates(&article).Error
}

// DeleteArticle 删除文章
func (a ArticleService) DeleteArticle(article *common.Article) (err error) {
	return global.GVA_DB.Delete(&article).Error
}

// GetArticleById 根据id获取文章
func (a ArticleService) GetArticleById(id, userId string) (article *common.Article, err error) {
	err = global.GVA_DB.Where("id = ?", id).First(&article).Error
	err = global.GVA_DB.Table("articles").Where("id = ?", id).Update("reading_num", gorm.Expr("reading_num + ?", 1)).Error

	if userId != "" {
		// 判断是否收藏
		var favorite app.Favorite
		global.GVA_DB.Where("wz_id = ? AND user_id = ?", id, userId).First(&favorite)
		if favorite.ID != 0 {
			article.IsFavorite = 1
		}
	}

	return
}