106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
package models
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import (
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"fmt"
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"github.com/go-pripro/shop/pkg/setting"
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"github.com/jinzhu/gorm"
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_ "github.com/jinzhu/gorm/dialects/postgres"
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"log"
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"time"
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)
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var db *gorm.DB
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type Model struct {
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ID int `gorm:"primary_key" json:"id"`
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CreatedOn int `json:"created_on"`
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ModifiedOn int `json:"modified_on"`
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DeletedOn int `json:"deleted_on"`
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}
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func Setup() {
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var err error
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db, err = gorm.Open(setting.DatabaseSetting.Type, fmt.Sprintf("host=%s user=%s dbname=%s port=%s sslmode=disable password=%s",
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setting.DatabaseSetting.Host,
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setting.DatabaseSetting.User,
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setting.DatabaseSetting.Name,
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setting.DatabaseSetting.Port,
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setting.DatabaseSetting.Password))
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if err != nil {
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log.Fatalf("models.Setup err: %v", err)
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}
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gorm.DefaultTableNameHandler = func(db *gorm.DB, defaultTableName string) string {
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return setting.DatabaseSetting.TablePrefix + defaultTableName
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}
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db.AutoMigrate(&Employee{})
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//db.SingularTable(true)
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db.LogMode(true)
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db.DB().SetMaxIdleConns(10)
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db.DB().SetMaxOpenConns(100)
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// 注册Callbacks
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db.Callback().Create().Replace("gorm:update_time_stamp", updateTimeStampForCreateCallback)
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db.Callback().Update().Replace("gorm:update_time_stamp", updateTimeStampForUpdateCallBack)
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db.Callback().Delete().Replace("gorm:delete", deleteCallback)
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}
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func CloseDB() {
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defer db.Close()
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}
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func updateTimeStampForCreateCallback(scope *gorm.Scope) {
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if !scope.HasError() {
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nowTime := time.Now().Unix()
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if createTimeField, ok := scope.FieldByName("CreatedOn"); ok {
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if createTimeField.IsBlank {
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createTimeField.Set(nowTime)
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}
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}
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if modifyTimeField, ok := scope.FieldByName("ModifiedOn"); ok {
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if modifyTimeField.IsBlank {
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modifyTimeField.Set(nowTime)
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}
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}
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}
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}
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func updateTimeStampForUpdateCallBack(scope *gorm.Scope) {
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if _, ok := scope.Get("gorm:update_column"); !ok {
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scope.SetColumn("ModifiedOn", time.Now().Unix())
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}
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}
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func deleteCallback(scope *gorm.Scope) {
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if !scope.HasError() {
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var extraOption string
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if str, ok := scope.Get("gorm:delete_option"); ok {
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extraOption = fmt.Sprint(str)
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}
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deletedOnField, hasDeletedOnField := scope.FieldByName("DeletedOn")
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if !scope.Search.Unscoped && hasDeletedOnField {
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scope.Raw(fmt.Sprintf(
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"update %v SET %v=%v%v%v",
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scope.QuotedTableName(),
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scope.Quote(deletedOnField.DBName),
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scope.AddToVars(time.Now().Unix()),
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addExtraSpaceIfExist(scope.CombinedConditionSql()),
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addExtraSpaceIfExist(extraOption),
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)).Exec()
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}
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}
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}
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func addExtraSpaceIfExist(str string) string {
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if str != "" {
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return " " + str
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}
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return ""
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} |