mirror of
https://gitee.com/dromara/mayfly-go
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178 lines
5.3 KiB
Go
178 lines
5.3 KiB
Go
package gormx
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import (
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"fmt"
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"mayfly-go/pkg/global"
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"mayfly-go/pkg/model"
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"time"
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"gorm.io/gorm"
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)
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// 伪删除之未删除过滤条件
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func UndeleteScope(db *gorm.DB) *gorm.DB {
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return db.Where(model.DeletedColumn, model.ModelUndeleted)
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}
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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 modelP 数据库映射实体模型
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func GetById(dbModel any, id uint64, cols ...string) error {
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return NewQuery(dbModel, model.NewCond().Columns(cols...).Eq(model.IdColumn, id)).GenGdb().Scopes(UndeleteScope).First(dbModel).Error
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}
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// 根据model获取单个实体对象
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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 cond 查询条件
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func GetByCond(dbModel any, cond *model.QueryCond) error {
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return NewQuery(dbModel, cond).GenGdb().Scopes(UndeleteScope).First(cond.GetDest()).Error
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}
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// 根据条件cond获取指定model表统计数量
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func CountByCond(dbModel any, cond *model.QueryCond) int64 {
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var count int64
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NewQuery(dbModel, cond).GenGdb().Scopes(UndeleteScope).Count(&count)
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return count
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}
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// PageQuery 根据查询条件分页查询数据
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// 若未指定查询列,则查询列以toModels字段为准
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func PageQuery[T any](q *Query, pageParam *model.PageParam, toModels T) (*model.PageResult[T], error) {
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q.Undeleted()
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gdb := q.GenGdb()
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var count int64
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err := gdb.Count(&count).Error
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if err != nil {
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return nil, err
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}
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if count == 0 {
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return model.EmptyPageResult[T](), nil
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}
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page := pageParam.PageNum
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pageSize := pageParam.PageSize
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err = gdb.Limit(pageSize).Offset((page - 1) * pageSize).Find(toModels).Error
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if err != nil {
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return nil, err
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}
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return &model.PageResult[T]{Total: count, List: toModels}, nil
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}
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// PageByCond 根据指定查询条件分页查询数据
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func PageByCond[T any](dbModel any, cond *model.QueryCond, pageParam *model.PageParam, toModels T) (*model.PageResult[T], error) {
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return PageQuery(NewQuery(dbModel, cond), pageParam, toModels)
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}
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// SelectByCond 根据条件查询结果集
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func SelectByCond(dbModel any, cond *model.QueryCond) error {
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return NewQuery(dbModel, cond).GenGdb().Scopes(UndeleteScope).Find(cond.GetDest()).Error
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}
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// SelectBySql 根据sql查询数据
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func SelectBySql(sql string, toEntity any, params ...any) error {
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return global.Db.Raw(sql, params...).Scan(toEntity).Error
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}
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func ExecSql(sql string, params ...any) error {
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return global.Db.Exec(sql, params...).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 any) error {
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return InsertWithDb(global.Db, model)
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}
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// 使用指定gormDb插入model
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func InsertWithDb(db *gorm.DB, model any) error {
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return db.Create(model).Error
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}
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// 批量插入
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func BatchInsert[T any](models []T) error {
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return BatchInsertWithDb[T](global.Db, models)
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}
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// 批量插入
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func BatchInsertWithDb[T any](db *gorm.DB, models []T) error {
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return db.CreateInBatches(models, len(models)).Error
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}
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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 any, columns ...string) error {
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return UpdateByIdWithDb(global.Db, model, columns...)
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}
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func UpdateByIdWithDb(db *gorm.DB, model any, columns ...string) error {
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return db.Model(model).Select(columns).Updates(model).Error
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}
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// UpdateByCondWithDb 使用指定gorm.DB更新满足条件的数据(model的主键值需为空,否则会带上主键条件)
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func UpdateByCond(dbModel any, values any, cond *model.QueryCond) error {
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return UpdateByCondWithDb(global.Db, dbModel, values, cond)
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}
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// UpdateByCondWithDb 使用指定gorm.DB更新满足条件的数据(model的主键值需为空,否则会带上主键条件)
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// @values values must be a struct or map.
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func UpdateByCondWithDb(db *gorm.DB, dbModel any, values any, cond *model.QueryCond) error {
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gormDb := db.Model(dbModel).Select(cond.GetSelectColumns())
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setGdbWhere(gormDb, cond)
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return gormDb.Updates(values).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_ any, id ...uint64) error {
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return DeleteByIdWithDb(global.Db, model_, id...)
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}
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// 根据id使用指定gromDb删除
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func DeleteByIdWithDb(db *gorm.DB, model_ any, id ...uint64) error {
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return DeleteByCondWithDb(db, model_, model.NewCond().In(model.IdColumn, id))
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}
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// 根据cond条件删除指定model表数据
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//
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// @param dbModel 数据库映射实体模型
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// @param cond 条件
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func DeleteByCond(dbModel any, cond *model.QueryCond) error {
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return DeleteByCondWithDb(global.Db, dbModel, cond)
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}
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// 根据cond条件删除指定model表数据
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//
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// @param dbModel 数据库映射实体模型
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// @param cond 条件
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func DeleteByCondWithDb(db *gorm.DB, dbModel any, cond *model.QueryCond) error {
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return setGdbWhere(db.Model(dbModel), cond).Updates(getDeleteColumnValue()).Error
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}
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func getDeleteColumnValue() map[string]any {
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columnValue := make(map[string]any)
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columnValue[model.DeletedColumn] = model.ModelDeleted
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columnValue[model.DeleteTimeColumn] = time.Now()
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return columnValue
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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", r)
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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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