20.3 Adding Constraints - Reference Documentation
Authors: Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari
Version: 3.1.4
20.3 Adding Constraints
You can still use GORM validation even if you use a Java domain model. Grails lets you define constraints through separate scripts in thesrc/java
directory. The script must be in a directory that matches the package of the corresponding domain class and its name must have a Constraints suffix. For example, if you had a domain class org.example.Book
, then you would create the script src/java/org/example/BookConstraints.groovy
.Add a standard GORM constraints
block to the script:
constraints = { title blank: false author blank: false }