symfony - Generate unique id - doctrine - symfony2

Question

I want to generate a unique ticket ID for my tickets. But how to let doctrine generate a unique id?

/**
 * @ORMColumn(name="id", type="integer")
 * @ORMId()
 * @ORMGeneratedValue(strategy="AUTO")
 */
protected $id;

little more explain:

• id must be 6 charters like: 678915
• id must be unique

question from:https://stackoverflow.com/questions/15039665/generate-unique-id-doctrine-symfony2

Answer 1

As of version 2.3, you can just add the following annotations to your property:

/**
 * @ORMColumn(type="guid")
 * @ORMId
 * @ORMGeneratedValue(strategy="UUID")
 */
protected $id;