2021-01-08 15:37:32 +08:00
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package model
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2020-09-01 10:34:11 +08:00
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import (
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2021-06-07 17:22:07 +08:00
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"fmt"
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2022-06-02 17:41:11 +08:00
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"mayfly-go/pkg/biz"
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"mayfly-go/pkg/global"
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2020-09-01 10:34:11 +08:00
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"strconv"
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2021-04-16 15:10:07 +08:00
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2020-09-01 10:34:11 +08:00
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"strings"
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"time"
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2021-06-07 17:22:07 +08:00
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"gorm.io/gorm"
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2020-09-01 10:34:11 +08:00
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)
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type Model struct {
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Id uint64 `json:"id"`
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CreateTime *time.Time `json:"createTime"`
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CreatorId uint64 `json:"creatorId"`
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Creator string `json:"creator"`
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UpdateTime *time.Time `json:"updateTime"`
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ModifierId uint64 `json:"modifierId"`
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Modifier string `json:"modifier"`
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}
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// 设置基础信息. 如创建时间,修改时间,创建者,修改者信息
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func (m *Model) SetBaseInfo(account *LoginAccount) {
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nowTime := time.Now()
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isCreate := m.Id == 0
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if isCreate {
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m.CreateTime = &nowTime
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}
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m.UpdateTime = &nowTime
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if account == nil {
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return
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}
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id := account.Id
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name := account.Username
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if isCreate {
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m.CreatorId = id
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m.Creator = name
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}
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m.Modifier = name
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m.ModifierId = id
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}
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func Tx(funcs ...func(db *gorm.DB) error) (err error) {
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tx := global.Db.Begin()
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defer func() {
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if r := recover(); r != nil {
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tx.Rollback()
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err = fmt.Errorf("%v", err)
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}
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}()
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for _, f := range funcs {
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err = f(tx)
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if err != nil {
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tx.Rollback()
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return
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}
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}
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err = tx.Commit().Error
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return
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}
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2021-01-08 15:37:32 +08:00
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// 根据id获取实体对象。model需为指针类型(需要将查询出来的值赋值给model)
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//
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// 若error不为nil则为不存在该记录
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// @param model 数据库映射实体模型
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func GetById(model interface{}, id uint64, cols ...string) error {
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return global.Db.Select(cols).Where("id = ?", id).First(model).Error
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}
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2022-10-26 20:49:29 +08:00
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// 根据map条件查询列表,map中的值如果为数组,则使用in查询
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// @param model 数据库映射实体模型
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func GetByIdIn(model interface{}, list interface{}, ids []uint64, orderBy ...string) {
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var orderByStr string
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if orderBy == nil {
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orderByStr = "id desc"
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} else {
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orderByStr = strings.Join(orderBy, ",")
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}
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global.Db.Model(model).Where("id in (?)", ids).Order(orderByStr).Find(list)
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}
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// 根据id列表查询
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func SelectByMap(model interface{}, list interface{}, where map[string]interface{}, orderBy ...string) {
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var orderByStr string
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if orderBy == nil {
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orderByStr = "id desc"
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} else {
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orderByStr = strings.Join(orderBy, ",")
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}
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global.Db.Model(model).Where(where).Order(orderByStr).Find(list)
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}
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// 根据id列表查询
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func CountBy(model interface{}) int64 {
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var count int64
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global.Db.Model(model).Where(model).Count(&count)
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return count
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}
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2022-10-26 20:49:29 +08:00
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// 根据map为条件统计数量,map中的值如果为数组,则使用in查询
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// @param model 数据库映射实体模型
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// @param where 条件map
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func CountByMap(model interface{}, where map[string]interface{}) int64 {
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var count int64
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global.Db.Model(model).Where(where).Count(&count)
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return count
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}
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// 根据统计sql返回统计数量
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func CountBySql(sql string) int64 {
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var count int64
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global.Db.Raw(sql).Scan(&count)
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return count
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}
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2021-01-08 15:37:32 +08:00
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// 根据id更新model,更新字段为model中不为空的值,即int类型不为0,ptr类型不为nil这类字段值
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// @param model 数据库映射实体模型
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func UpdateById(model interface{}) error {
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return global.Db.Model(model).Updates(model).Error
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}
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// 根据id删除model
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// @param model 数据库映射实体模型
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func DeleteById(model interface{}, id uint64) error {
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return global.Db.Delete(model, "id = ?", id).Error
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}
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// 根据条件删除
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// @param model 数据库映射实体模型
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func DeleteByCondition(model interface{}) error {
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return global.Db.Where(model).Delete(model).Error
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}
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// 插入model
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// @param model 数据库映射实体模型
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func Insert(model interface{}) error {
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return global.Db.Create(model).Error
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}
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// 获取满足model中不为空的字段值条件的所有数据.
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//
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// @param list为数组类型 如 var users *[]User,可指定为非model结构体,即只包含需要返回的字段结构体
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func ListBy(model interface{}, list interface{}, cols ...string) {
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global.Db.Model(model).Select(cols).Where(model).Find(list)
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}
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2021-06-07 17:22:07 +08:00
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// 获取满足model中不为空的字段值条件的所有数据.
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//
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// @param list为数组类型 如 var users *[]User,可指定为非model结构体
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// @param model 数据库映射实体模型
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func ListByOrder(model interface{}, list interface{}, order ...string) {
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var orderByStr string
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if order == nil {
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orderByStr = "id desc"
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} else {
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orderByStr = strings.Join(order, ",")
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}
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global.Db.Model(model).Where(model).Order(orderByStr).Find(list)
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}
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2021-01-08 15:37:32 +08:00
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// 获取满足model中不为空的字段值条件的单个对象。model需为指针类型(需要将查询出来的值赋值给model)
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//
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// 若 error不为nil,则为不存在该记录
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// @param model 数据库映射实体模型
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func GetBy(model interface{}, cols ...string) error {
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return global.Db.Select(cols).Where(model).First(model).Error
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}
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// 获取满足conditionModel中不为空的字段值条件的单个对象。model需为指针类型(需要将查询出来的值赋值给model)
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//
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// @param toModel 需要查询的字段
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//
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// 若 error不为nil,则为不存在该记录
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func GetByConditionTo(conditionModel interface{}, toModel interface{}) error {
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return global.Db.Model(conditionModel).Where(conditionModel).First(toModel).Error
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}
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2020-09-01 10:34:11 +08:00
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// 获取分页结果
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func GetPage(pageParam *PageParam, model interface{}, conditionModel interface{}, toModels interface{}, orderBy ...string) *PageResult {
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var count int64
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err := global.Db.Model(model).Where(conditionModel).Count(&count).Error
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biz.ErrIsNilAppendErr(err, " 查询错误:%s")
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if count == 0 {
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return &PageResult{Total: 0, List: []string{}}
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}
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page := pageParam.PageNum
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pageSize := pageParam.PageSize
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var orderByStr string
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if orderBy == nil {
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orderByStr = "id desc"
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} else {
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orderByStr = strings.Join(orderBy, ",")
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}
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err = global.Db.Model(model).Where(conditionModel).Order(orderByStr).Limit(pageSize).Offset((page - 1) * pageSize).Find(toModels).Error
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biz.ErrIsNil(err, "查询失败")
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return &PageResult{Total: count, List: toModels}
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2020-09-01 10:34:11 +08:00
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}
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// 根据sql获取分页对象
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func GetPageBySql(sql string, param *PageParam, toModel interface{}, args ...interface{}) *PageResult {
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db := global.Db
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selectIndex := strings.Index(sql, "SELECT ") + 7
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fromIndex := strings.Index(sql, " FROM")
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selectCol := sql[selectIndex:fromIndex]
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countSql := strings.Replace(sql, selectCol, "COUNT(*) AS total ", 1)
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// 查询count
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var count int
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err := db.Raw(countSql, args...).Scan(&count).Error
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biz.ErrIsNilAppendErr(err, "查询失败: %s")
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if count == 0 {
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return &PageResult{Total: 0, List: []string{}}
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}
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// 分页查询
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limitSql := sql + " LIMIT " + strconv.Itoa((param.PageNum-1)*param.PageSize) + ", " + strconv.Itoa(param.PageSize)
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err = db.Raw(limitSql).Scan(toModel).Error
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biz.ErrIsNil(err, "查询失败: %s")
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return &PageResult{Total: int64(count), List: toModel}
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}
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func GetListBySql(sql string, params ...interface{}) []map[string]interface{} {
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var maps []map[string]interface{}
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global.Db.Raw(sql, params...).Scan(&maps)
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return maps
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}
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func GetListBySql2Model(sql string, toEntity interface{}, params ...interface{}) error {
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return global.Db.Raw(sql, params...).Find(toEntity).Error
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}
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