# version

## Purpose

Used to disable optimistic locking or change the column that holds the version.

## Examples

    class Book {
        …
        static mapping = {
            version false
        }
    }

## Description

Usage: `version(string/boolean)`

By default GORM is configured with optimistic locking enabled. You can disable optimistic locking by calling the `version` method with an argument of `false`:

    static mapping = {
        version false
    }

Alternatively if you simply want to change the column used to store the version you can pass the name of the column:

    static mapping = {
        version 'revision_number'
    }