mirror of https://github.com/go-gorm/gorm.git
64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
package gorm
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
)
|
|
|
|
// Define callbacks for deleting
|
|
func init() {
|
|
DefaultCallback.Delete().Register("gorm:begin_transaction", beginTransactionCallback)
|
|
DefaultCallback.Delete().Register("gorm:before_delete", beforeDeleteCallback)
|
|
DefaultCallback.Delete().Register("gorm:delete", deleteCallback)
|
|
DefaultCallback.Delete().Register("gorm:after_delete", afterDeleteCallback)
|
|
DefaultCallback.Delete().Register("gorm:commit_or_rollback_transaction", commitOrRollbackTransactionCallback)
|
|
}
|
|
|
|
// beforeDeleteCallback will invoke `BeforeDelete` method before deleting
|
|
func beforeDeleteCallback(scope *Scope) {
|
|
if scope.DB().HasBlockGlobalUpdate() && !scope.hasConditions() {
|
|
scope.Err(errors.New("missing WHERE clause while deleting"))
|
|
return
|
|
}
|
|
if !scope.HasError() {
|
|
scope.CallMethod("BeforeDelete")
|
|
}
|
|
}
|
|
|
|
// deleteCallback used to delete data from database or set deleted_at to current time (when using with soft delete)
|
|
func deleteCallback(scope *Scope) {
|
|
if !scope.HasError() {
|
|
var extraOption string
|
|
if str, ok := scope.Get("gorm:delete_option"); ok {
|
|
extraOption = fmt.Sprint(str)
|
|
}
|
|
|
|
deletedAtField, hasDeletedAtField := scope.FieldByName("DeletedAt")
|
|
|
|
if !scope.Search.Unscoped && hasDeletedAtField {
|
|
scope.Raw(fmt.Sprintf(
|
|
"UPDATE %v SET %v=%v%v%v",
|
|
scope.QuotedTableName(),
|
|
scope.Quote(deletedAtField.DBName),
|
|
scope.AddToVars(scope.db.nowFunc()),
|
|
addExtraSpaceIfExist(scope.CombinedConditionSql()),
|
|
addExtraSpaceIfExist(extraOption),
|
|
)).Exec()
|
|
} else {
|
|
scope.Raw(fmt.Sprintf(
|
|
"DELETE FROM %v%v%v",
|
|
scope.QuotedTableName(),
|
|
addExtraSpaceIfExist(scope.CombinedConditionSql()),
|
|
addExtraSpaceIfExist(extraOption),
|
|
)).Exec()
|
|
}
|
|
}
|
|
}
|
|
|
|
// afterDeleteCallback will invoke `AfterDelete` method after deleting
|
|
func afterDeleteCallback(scope *Scope) {
|
|
if !scope.HasError() {
|
|
scope.CallMethod("AfterDelete")
|
|
}
|
|
}
|