257 lines
6.5 KiB
Go
257 lines
6.5 KiB
Go
package dao
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import (
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"gorm.io/gorm"
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"gorm.io/gorm/clause"
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"vote-api/api/model"
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"vote-api/api/requests"
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"vote-api/global"
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)
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type VideoDao struct {
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}
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// GetVideoById 获取数据-id
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func (r *VideoDao) GetVideoById(VideoId int64) (m *model.Video, err error) {
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err = global.Db.First(&m, VideoId).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// GetVideoPreloadById 获取数据-加载全部关联-id
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func (r *VideoDao) GetVideoPreloadById(VideoId int64) (m *model.Video, err error) {
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err = global.Db.Preload(clause.Associations).First(&m, VideoId).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// DeleteVideo 删除
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func (r *VideoDao) DeleteVideo(tx *gorm.DB, maps interface{}) error {
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err := tx.Where(maps).Delete(&model.Video{}).Error
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if err != nil {
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return err
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}
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return nil
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}
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// DeleteVideoById 删除-id
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func (r *VideoDao) DeleteVideoById(tx *gorm.DB, VideoId int64) error {
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if err := tx.Delete(&model.Video{}, VideoId).Error; err != nil {
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return err
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}
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return nil
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}
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// EditVideo 修改
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func (r *VideoDao) EditVideo(tx *gorm.DB, maps interface{}, data interface{}) error {
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err := tx.Model(&model.Video{}).Where(maps).Updates(data).Error
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if err != nil {
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return err
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}
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return nil
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}
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// EditVideoById 修改-id
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func (r *VideoDao) EditVideoById(tx *gorm.DB, VideoId int64, data interface{}) error {
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err := tx.Model(&model.Video{}).Where("video_id = ?", VideoId).Updates(data).Error
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if err != nil {
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return err
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}
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return nil
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}
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// GetVideoList 获取列表
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func (r *VideoDao) GetVideoList(maps interface{}) (m []*model.Video, err error) {
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err = global.Db.Where(maps).Find(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// GetVideoListNotIn 获取列表
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func (r *VideoDao) GetVideoListNotIn(maps interface{}, ids []int64) (m []*model.Video, err error) {
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err = global.Db.Where(maps).
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Preload("VideoAuthor").
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Preload("VideoAuthor.BaseHospital").
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Where("video_id NOT IN ?", ids).
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Find(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// GetVideoCount 获取数量
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func (r *VideoDao) GetVideoCount(maps interface{}) (total int64, err error) {
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err = global.Db.Model(&model.Video{}).Where(maps).Count(&total).Error
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if err != nil {
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return 0, err
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}
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return total, nil
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}
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// GetVideoListRand 获取列表-随机
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func (r *VideoDao) GetVideoListRand(maps interface{}, limit int) (m []*model.Video, err error) {
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err = global.Db.Where(maps).Order("rand()").Limit(limit).Find(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// AddVideo 新增
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func (r *VideoDao) AddVideo(tx *gorm.DB, model *model.Video) (*model.Video, error) {
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if err := tx.Create(model).Error; err != nil {
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return nil, err
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}
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return model, nil
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}
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// GetVideo 获取
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func (r *VideoDao) GetVideo(maps interface{}) (m *model.Video, err error) {
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err = global.Db.Where(maps).First(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// Inc 自增
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func (r *VideoDao) Inc(tx *gorm.DB, VideoId int64, field string, numeral int) error {
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err := tx.Model(&model.Video{}).Where("video_id = ?", VideoId).UpdateColumn(field, gorm.Expr(field+" + ?", numeral)).Error
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if err != nil {
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return err
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}
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return nil
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}
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// Dec 自减
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func (r *VideoDao) Dec(tx *gorm.DB, VideoId int64, field string, numeral int) error {
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err := tx.Model(&model.Video{}).Where("video_id = ?", VideoId).UpdateColumn(field, gorm.Expr(field+" - ?", numeral)).Error
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if err != nil {
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return err
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}
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return nil
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}
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// GetVideoPageSearch 获取视频列表-分页
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func (r *VideoDao) GetVideoPageSearch(req requests.GetVideoPage, page, pageSize int) (m []*model.Video, total int64, err error) {
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var totalRecords int64
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// 构建查询条件
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query := global.Db.Model(&model.Video{})
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// 作者
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query = query.Preload("VideoAuthor")
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// 作者关联医院
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query = query.Preload("VideoAuthor.BaseHospital")
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// 文章状态（1:正常 2:禁用）
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query = query.Where("video_status = ?", 1)
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// 搜索关键字
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if req.Keyword != "" {
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keyword := "%" + req.Keyword + "%" //
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// 标题
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orQuery := global.Db.Model(&model.Video{}).Or("video_title LIKE ?", keyword)
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// 编号
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orQuery = orQuery.Or("video_number LIKE ?", keyword)
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// 医院名称
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hospitalSubQuery := global.Db.Model(&model.BaseHospital{}).
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Select("hospital_id").
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Where("hospital_name LIKE ?", keyword)
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articleAuthorSubQuery := global.Db.Model(&model.VideoAuthor{}).
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Select("video_id").
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Where(gorm.Expr("hospital_id IN (?)", hospitalSubQuery))
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orQuery = orQuery.Or(gorm.Expr("video_id IN (?)", articleAuthorSubQuery))
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// 作者姓名
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subQuery := global.Db.Model(&model.VideoAuthor{}).
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Select("video_id").
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Where("author_name LIKE ?", keyword)
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orQuery = orQuery.Or(gorm.Expr("video_id IN (?)", subQuery))
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// 执行组建
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query = query.Where(orQuery)
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}
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// 排序
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query = query.Order("created_at asc")
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// 查询总数量
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if err := query.Count(&totalRecords).Error; err != nil {
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return nil, 0, err
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}
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err = query.Scopes(model.Paginate(page, pageSize)).Find(&m).Error
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if err != nil {
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return nil, 0, err
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}
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return m, totalRecords, nil
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}
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// GetVideoOrderList 获取列表-排序
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func (r *VideoDao) GetVideoOrderList(maps interface{}, orderField string, limit int) (m []*model.Video, err error) {
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err = global.Db.Where(maps).Preload(clause.Associations).Order(orderField).Limit(limit).Find(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// GetVideoRankList 获取视频排名列表
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func (r *VideoDao) GetVideoRankList(maps interface{}, orderField string, limit int) (m []*model.Video, err error) {
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err = global.Db.Where(maps).
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Preload("VideoAuthor").
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Preload("VideoAuthor.BaseHospital").
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Order(orderField).Limit(limit).Find(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// GetVideoListGtVoteNum 获取大于某一投票数的视频列表
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func (r *VideoDao) GetVideoListGtVoteNum(maps interface{}, voteNum uint) (m []*model.Video, err error) {
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err = global.Db.Where(maps).Where("vote_num > ?", voteNum).Find(&m).Error
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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// GetVideoRank 获取某一条数据的排名
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func (r *VideoDao) GetVideoRank(videoID int64) (int, error) {
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var rank int
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// 定义子查询
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subQuery := global.Db.Model(&model.Video{}).
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Select("video_id, vote_num, (@rank := @rank + 1) AS rank").
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Where("video_status = ?", 1).
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Order("vote_num DESC").
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Joins(", (SELECT @rank := 0) AS r")
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// 将子查询作为命名子查询的一部分进行查询
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err := global.Db.Table("(?) AS sub", subQuery).
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Where("sub.video_id = ?", videoID).
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Pluck("sub.rank", &rank).Error
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if err != nil {
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return 0, err
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}
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return rank, nil
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}
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