orm.go
func OptFieldTypeInt(min int64, max int64) FieldOption {
	return func(options *FieldOptions) {
		options.fieldType = FieldTypeInt
		options.min = min
		options.max = max
	}
}
func OptFieldTypeInt(min int64, max int64) FieldOption {
	return func(options *FieldOptions) {
		options.fieldType = FieldTypeInt
		options.min = min
		options.max = max
	}
}
// OptFieldTypeInt adds an integer field.