Phone number constraint for Grails

This plugin establishes a phoneNumber constraint property for validateable objects, that being domain objects, and objects implementing grails.validation.Validateable. It relies on Google's libphonenumber Java implementation

Installation

To use this plugin, add the plugin to build.gradle:

dependencies {
    compile "io.github.gpc:phone-number-constraint:1.0.0"
}

Example

Here is an example of a command object that uses the plugin:

class PhoneNumber implements Validateable {

    String number

    static constraints = {
        number nullable: false, phoneNumber: true
    }
}

Configuration

There are three different ways to configure the constraint.

1. With a boolean, true or false enabling or disabling the constraint
2. With a string, where the string is the two-letter code for region. If set, the constraint is enabled
3. With a map object, for more configuration. If set, the constraint is enabled

Configuration by map:

The following table describes the configuration options:

Config key	default	description
region	US	The default region for phone numbers without the international +xxx prefix
phoneFormat	INTERNATIONAL	How phonenumbers are formatted, if format is true. Possible values to be found in PhoneNumberFormat
format	false	Will update the target object, with the property name with a formatted version of the phone number. If INTERNATIONAL is set in phoneFormat the international dialing code starting with +xxx is written to the field value. This is an experimental feature

PhoneNumberUtil

The class dk.glasius.phoneconstraint.PhoneNumberUtil has convenience methods for validating, parsing and formatting a phone-number. This could be used for formatting in the UI of your application.

Unit-testing your constraints

When running a unit test, the cascade constraint isn't registered with Grails. To work around this issue, the test class must implement org.grails.testing.GrailsUnitTest and the following code must be added to the setup() method of the test:

class ParentSpec extends Specification implements GrailsUnitTest {

    @Override
    Closure doWithSpring() {
        return {
            constraintEvaluator(DefaultConstraintEvaluator)
        }
    }

    void setup() {
        PhoneNumberConstraintRegistration.register(applicationContext)
    }

}

This will register the PhoneNumberConstraint the same way as the plugin does at runtime.