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update review count #153

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update review count #153

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31 changes: 29 additions & 2 deletions danke/api/review.go
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Original file line number Diff line number Diff line change
Expand Up @@ -255,8 +255,35 @@ func DeleteReviewV1(c *fiber.Ctx) (err error) {
return Forbidden("没有权限")
}

// 删除评论
err = DB.Delete(review).Error
// 在事务中删除评论并更新计数
err = DB.Transaction(func(tx *gorm.DB) error {
// 删除评论
if err := tx.Delete(review).Error; err != nil {
return err
}

// 更新课程评教数量
if err := tx.Model(&Course{ID: review.CourseID}).
Update("review_count", gorm.Expr("review_count - 1")).Error; err != nil {
return err
}

// 获取课程组ID
var courseGroupID int
if err := tx.Model(&Course{}).Select("course_group_id").
Where("id = ?", review.CourseID).Scan(&courseGroupID).Error; err != nil {
return err
}

// 更新课程组评教数量
if err := tx.Model(&CourseGroup{ID: courseGroupID}).
Update("review_count", gorm.Expr("review_count - 1")).Error; err != nil {
return err
}

return nil
})

if err != nil {
return
}
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