You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
2.2 KiB
106 lines
2.2 KiB
package mysql
|
|
|
|
import (
|
|
"errors"
|
|
"gorm.io/gorm"
|
|
"log"
|
|
)
|
|
|
|
// Association 关联模型结构体
|
|
type Association struct {
|
|
Query string
|
|
Args interface{}
|
|
}
|
|
|
|
type BaseMapper[T any] struct {
|
|
Associations []Association // 关联
|
|
}
|
|
|
|
// Insert 新增
|
|
func (m *BaseMapper[T]) Insert(entity *T) error {
|
|
log.Printf("insert %+v\n", entity)
|
|
return db.Create(entity).Error
|
|
}
|
|
|
|
// Delete 删除
|
|
func (m *BaseMapper[T]) Delete(entity T) error {
|
|
log.Printf("delete %+v\n", entity)
|
|
return db.Delete(&entity).Error
|
|
}
|
|
|
|
// Update 更新
|
|
func (m *BaseMapper[T]) Update(entity *T, omits ...interface{}) error {
|
|
log.Printf("update %+v\n", &entity)
|
|
if len(omits) > 0 {
|
|
other := omits[1:]
|
|
return db.Select(omits[0], other...).Updates(entity).Error
|
|
}
|
|
return db.Save(entity).Error
|
|
}
|
|
|
|
// Detail 详情
|
|
func (m *BaseMapper[T]) Detail(entity T) (res T, err error) {
|
|
log.Printf("detail %+v\n", entity)
|
|
err = db.First(&entity, entity).Error
|
|
if errors.Is(err, gorm.ErrRecordNotFound) {
|
|
return res, nil
|
|
}
|
|
return res, err
|
|
}
|
|
|
|
// List 列表
|
|
func (m *BaseMapper[T]) List(entity *T) (res []T, err error) {
|
|
if entity == nil {
|
|
err = db.Order("created_at desc").Find(&res).Error
|
|
} else {
|
|
err = db.Where(entity).Order("created_at desc").Find(&res).Error
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
// ListWithPage 列表带分页
|
|
func (m *BaseMapper[T]) ListWithPage(entity *T, page, pageSize int) (res []T, err error) {
|
|
|
|
var tx *gorm.DB
|
|
|
|
if m.Associations != nil && len(m.Associations) > 0 {
|
|
for _, v := range m.Associations {
|
|
if tx != nil {
|
|
tx = tx.Preload(v.Query, v.Args)
|
|
} else {
|
|
tx = db.Preload(v.Query, v.Args)
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
if tx == nil {
|
|
tx = db
|
|
}
|
|
|
|
if entity == nil {
|
|
err = tx.Order("created_at desc").Offset((page - 1) * pageSize).Limit(pageSize).Find(&res).Error
|
|
} else {
|
|
err = tx.Where(entity).Order("created_at desc").Offset((page - 1) * pageSize).Limit(pageSize).Find(&res).Error
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
// First 单条记录
|
|
func (m *BaseMapper[T]) First(entity T) (res T, err error) {
|
|
log.Printf("first %+v\n", entity)
|
|
err = db.First(&res, entity).Error
|
|
if errors.Is(err, gorm.ErrRecordNotFound) {
|
|
return res, nil
|
|
}
|
|
return res, err
|
|
}
|