}

	if constraint.OnUpdate != "" {
		sql += " ON UPDATE " + constraint.OnUpdate
	}

	foreignKeys := make([]interface{}, 0, len(constraint.ForeignKeys))
	for _, field := range constraint.ForeignKeys {
		foreignKeys = append(foreignKeys, clause.Column{Name: field.DBName})
	}

	references := make([]interface{}, 0, len(constraint.References))
	for _, field := range constraint.References {

			primaryFields []*schema.Field
			foreignKeys   []string
			updateAttrs   = map[string]interface{}{}
			conds         []clause.Expression
		)

		for _, ref := range rel.References {
			if ref.PrimaryValue == "" {
				primaryFields = append(primaryFields, ref.PrimaryKey)
				foreignKeys = append(foreignKeys, ref.ForeignKey.DBName)
				updateAttrs[ref.ForeignKey.DBName] = nil
			} else {

}

// ToQueryValues to query values
func ToQueryValues(table string, foreignKeys []string, foreignValues [][]interface{}) (interface{}, []interface{}) {
	queryValues := make([]interface{}, len(foreignValues))
	if len(foreignKeys) == 1 {
		for idx, r := range foreignValues {
			queryValues[idx] = r[0]
		}

		return clause.Column{Table: table, Name: foreignKeys[0]}, queryValues
	}

								db.AddError(ref.ForeignKey.Set(db.Statement.Context, f, fv))
							} else if ref.PrimaryValue != "" {
								db.AddError(ref.ForeignKey.Set(db.Statement.Context, f, ref.PrimaryValue))
							}
							assignmentColumns = append(assignmentColumns, ref.ForeignKey.DBName)
						}

						saveAssociations(db, rel, f, selectColumns, restricted, assignmentColumns)

				joinForeignKeys = append(joinForeignKeys, ref.ForeignKey.DBName)
				joinForeignFields = append(joinForeignFields, ref.ForeignKey)
				foreignFields = append(foreignFields, ref.PrimaryKey)
			} else if ref.PrimaryValue != "" {
				tx = tx.Where(clause.Eq{Column: ref.ForeignKey.DBName, Value: ref.PrimaryValue})
			} else {
				joinRelForeignFields = append(joinRelForeignFields, ref.ForeignKey)

					Schema:      "User",
					FieldSchema: "Toy",
					Polymorphic: Polymorphic{ID: "OwnerID", Type: "OwnerType", Value: "users"},
					References: []Reference{
						{ForeignKey: "OwnerType", ForeignSchema: "Toy", PrimaryValue: "users"},
						{ForeignKey: "OwnerType", ForeignSchema: "Toy", PrimaryValue: "users"},
					},
				},
				"Toys": {
					Name:        "Toys",
					Type:        schema.HasMany,

				for _, rf := range r.References {
					if (rf.PrimaryKey == nil || (rf.PrimaryKey.Name == ref.PrimaryKey && rf.PrimaryKey.Schema.Name == ref.PrimarySchema)) && (rf.PrimaryValue == ref.PrimaryValue) && (rf.ForeignKey.Name == ref.ForeignKey && rf.ForeignKey.Schema.Name == ref.ForeignSchema) && (rf.OwnPrimaryKey == ref.OwnPrimaryKey) {
						found = true
					}
				}

				if !found {
					var refs []string

	for _, ref := range relation.References {
		f := joinSchema.LookUpField(ref.ForeignKey.DBName)
		if f == nil {
			return fmt.Errorf("missing field %s for join table", ref.ForeignKey.DBName)
		}

		f.DataType = ref.ForeignKey.DataType
		f.GORMDataType = ref.ForeignKey.GORMDataType
		if f.Size == 0 {
			f.Size = ref.ForeignKey.Size
		}
		ref.ForeignKey = f
	}

		}
		db, err = gorm.Open(mysql.Open(dbDSN), cfg)
	default:
		log.Println("testing sqlite3...")
		db, err = gorm.Open(sqlite.Open(filepath.Join(os.TempDir(), "gorm.db")), cfg)
		if err == nil {
			db.Exec("PRAGMA foreign_keys = ON")
		}
	}

	if err != nil {
		return
	}

	if debug := os.Getenv("DEBUG"); debug == "true" {
		db.Logger = db.Logger.LogMode(logger.Info)
	} else if debug == "false" {

										Value:  clause.Column{Table: tableAliasName, Name: ref.ForeignKey.DBName},
									}
								} else {
									if ref.PrimaryValue == "" {
										exprs[idx] = clause.Eq{
											Column: clause.Column{Table: parentTableName, Name: ref.ForeignKey.DBName},
											Value:  clause.Column{Table: tableAliasName, Name: ref.PrimaryKey.DBName},
										}