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paopao-ce/internal/model/model.go

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package model
import (
"fmt"
"time"
"github.com/rocboss/paopao-ce/global"
"github.com/rocboss/paopao-ce/pkg/setting"
"gorm.io/driver/mysql"
"gorm.io/gorm"
"gorm.io/gorm/logger"
"gorm.io/gorm/schema"
"gorm.io/plugin/dbresolver"
"gorm.io/plugin/soft_delete"
)
// 公共Model
type Model struct {
ID int64 `gorm:"primary_key" json:"id"`
CreatedOn int64 `json:"created_on"`
ModifiedOn int64 `json:"modified_on"`
DeletedOn int64 `json:"deleted_on"`
IsDel soft_delete.DeletedAt `gorm:"softDelete:flag" json:"is_del"`
}
type ConditionsT map[string]interface{}
func NewDBEngine(databaseSetting *setting.MySQLSettingS) (*gorm.DB, error) {
newLogger := logger.New(
global.Logger, // io writer日志输出的目标前缀和日志包含的内容
logger.Config{
SlowThreshold: time.Second, // 慢 SQL 阈值
LogLevel: databaseSetting.LogLevel, // 日志级别
IgnoreRecordNotFoundError: true, // 忽略ErrRecordNotFound记录未找到错误
Colorful: false, // 禁用彩色打印
},
)
s := "%s:%s@tcp(%s)/%s?charset=%s&parseTime=%t&loc=Local"
db, err := gorm.Open(mysql.Open(fmt.Sprintf(s,
databaseSetting.UserName,
databaseSetting.Password,
databaseSetting.Host,
databaseSetting.DBName,
databaseSetting.Charset,
databaseSetting.ParseTime,
)), &gorm.Config{
Logger: newLogger,
NamingStrategy: schema.NamingStrategy{
TablePrefix: databaseSetting.TablePrefix,
SingularTable: true,
},
})
if err != nil {
return nil, err
}
db.Use(dbresolver.Register(dbresolver.Config{}).
SetConnMaxIdleTime(time.Hour).
SetConnMaxLifetime(24 * time.Hour).
SetMaxIdleConns(databaseSetting.MaxIdleConns).
SetMaxOpenConns(databaseSetting.MaxOpenConns))
return db, nil
}
func (m *Model) BeforeCreate(tx *gorm.DB) (err error) {
nowTime := time.Now().Unix()
tx.Statement.SetColumn("created_on", nowTime)
tx.Statement.SetColumn("modified_on", nowTime)
return
}
func (m *Model) BeforeUpdate(tx *gorm.DB) (err error) {
if !tx.Statement.Changed("modified_on") {
tx.Statement.SetColumn("modified_on", time.Now().Unix())
}
return
}