Search code examples
grailsgrails-orm

In Grails is there something in domain class like onLoad()?

Guys,

I have a following domain class:

class Product { 
    String name, 
    String productRecord,

    static transients = ['productRecord']
}

productRecord is a field which is generated automatically based on the id of the Product instance.

So I've been thinking, is there a place which will be automatically called when a domain instance is load to generate the productRecord number?

What's the best way to do that?

Solution

  • You can probably leverage the built-in Domain Events:

    GORM supports the registration of events as methods that get fired when certain events occurs such as deletes, inserts and updates. The following is a list of supported events:

    • beforeInsert - Executed before an object is initially persisted to the database
    • beforeUpdate - Executed before an object is updated
    • beforeDelete - Executed before an object is deleted
    • beforeValidate - Executed before an object is validated
    • afterInsert - Executed after an object is persisted to the database
    • afterUpdate - Executed after an object has been updated
    • afterDelete - Executed after an object has been deleted
    • onLoad - Executed when an object is loaded from the database

    Have a look at the docs for some examples.