forked from mirror/gorm
122 lines
3.8 KiB
Go
122 lines
3.8 KiB
Go
package gorm
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import (
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"fmt"
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"strings"
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)
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func BeforeCreate(scope *Scope) {
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scope.CallMethodWithErrorCheck("BeforeSave")
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scope.CallMethodWithErrorCheck("BeforeCreate")
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}
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func UpdateTimeStampWhenCreate(scope *Scope) {
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if !scope.HasError() {
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now := NowFunc()
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scope.SetColumn("CreatedAt", now)
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scope.SetColumn("UpdatedAt", now)
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}
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}
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func Create(scope *Scope) {
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defer scope.Trace(NowFunc())
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if !scope.HasError() {
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// set create sql
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var sqls, columns []string
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fields := scope.Fields()
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for _, field := range fields {
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if scope.changeableField(field) {
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if field.IsNormal {
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if !field.IsPrimaryKey || (field.IsPrimaryKey && !field.IsBlank) {
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if !field.IsBlank || !field.HasDefaultValue {
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columns = append(columns, scope.Quote(field.DBName))
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sqls = append(sqls, scope.AddToVars(field.Field.Interface()))
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} else if field.HasDefaultValue {
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scope.InstanceSet("gorm:force_reload_after_create", true)
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}
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}
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} else if relationship := field.Relationship; relationship != nil && relationship.Kind == "belongs_to" {
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for _, dbName := range relationship.ForeignDBNames {
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if relationField := fields[dbName]; !scope.changeableField(relationField) {
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columns = append(columns, scope.Quote(relationField.DBName))
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sqls = append(sqls, scope.AddToVars(relationField.Field.Interface()))
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}
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}
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}
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}
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}
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returningKey := "*"
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primaryField := scope.PrimaryField()
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if primaryField != nil {
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returningKey = scope.Quote(primaryField.DBName)
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}
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if len(columns) == 0 {
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scope.Raw(fmt.Sprintf("INSERT INTO %v DEFAULT VALUES %v",
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scope.QuotedTableName(),
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scope.Dialect().ReturningStr(scope.QuotedTableName(), returningKey),
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))
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} else {
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scope.Raw(fmt.Sprintf(
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"INSERT INTO %v (%v) VALUES (%v) %v",
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scope.QuotedTableName(),
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strings.Join(columns, ","),
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strings.Join(sqls, ","),
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scope.Dialect().ReturningStr(scope.QuotedTableName(), returningKey),
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))
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}
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// execute create sql
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if scope.Dialect().SupportLastInsertId() {
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if result, err := scope.SqlDB().Exec(scope.Sql, scope.SqlVars...); scope.Err(err) == nil {
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id, err := result.LastInsertId()
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if scope.Err(err) == nil {
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scope.db.RowsAffected, _ = result.RowsAffected()
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if primaryField != nil && primaryField.IsBlank {
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scope.Err(scope.SetColumn(primaryField, id))
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}
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}
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}
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} else {
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if primaryField == nil {
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if results, err := scope.SqlDB().Exec(scope.Sql, scope.SqlVars...); err == nil {
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scope.db.RowsAffected, _ = results.RowsAffected()
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} else {
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scope.Err(err)
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}
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} else {
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if err := scope.Err(scope.SqlDB().QueryRow(scope.Sql, scope.SqlVars...).Scan(primaryField.Field.Addr().Interface())); err == nil {
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scope.db.RowsAffected = 1
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} else {
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scope.Err(err)
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}
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}
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}
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}
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}
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func ForceReloadAfterCreate(scope *Scope) {
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if _, ok := scope.InstanceGet("gorm:force_reload_after_create"); ok {
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scope.DB().New().First(scope.Value)
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}
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}
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func AfterCreate(scope *Scope) {
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scope.CallMethodWithErrorCheck("AfterCreate")
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scope.CallMethodWithErrorCheck("AfterSave")
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}
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func init() {
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DefaultCallback.Create().Register("gorm:begin_transaction", BeginTransaction)
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DefaultCallback.Create().Register("gorm:before_create", BeforeCreate)
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DefaultCallback.Create().Register("gorm:save_before_associations", SaveBeforeAssociations)
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DefaultCallback.Create().Register("gorm:update_time_stamp_when_create", UpdateTimeStampWhenCreate)
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DefaultCallback.Create().Register("gorm:create", Create)
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DefaultCallback.Create().Register("gorm:force_reload_after_create", ForceReloadAfterCreate)
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DefaultCallback.Create().Register("gorm:save_after_associations", SaveAfterAssociations)
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DefaultCallback.Create().Register("gorm:after_create", AfterCreate)
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DefaultCallback.Create().Register("gorm:commit_or_rollback_transaction", CommitOrRollbackTransaction)
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}
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