Documentation

DDM Form Annotations

The auto-generated configuration interface UI may be too simplistic for some configurations. You can use the Dynamic Data Mapping (DDM) form annotations to customize your layout’s UI.

See a Sample Configuration UI

  1. Start Liferay DXP. If you don’t already have a docker container, use

    docker run -it -m 8g -p 8080:8080 liferay/portal:7.4.1-ga2
    
  2. Download and unzip DDM Form Annotations

    curl https://learn.liferay.com/dxp/latest/en/developing-applications/core-frameworks/configuration-framework/liferay-v3d9.zip -O
    
    unzip liferay-v1d9.zip
    
  3. From the module root, build and deploy.

    ./gradlew deploy -Ddeploy.docker.container.id=$(docker ps -lq)
    

    Note

    This command is the same as copying the deployed jars to /opt/liferay/osgi/modules on the Docker container.

  4. Confirm the deployment in the Liferay Docker container console.

    STARTED com.acme.v1d9.impl_1.0.0 [1650]
    
  5. Open your browser to https://localhost:8080 and navigate to Control PanelConfigurationSystem Settings. Under Platform click Third Party. Click V1D9 Configuration on the left.

    The UI layout is customized by DDM form annotations.

Here’s how the DDM form annotations work.

Write the Configuration Form

Create a configuration form interface that includes all the form fields in your settings UI. For each field use a @DDMFormField annotation. Define attributes such as label, properties, and type for each field.

@DDMFormField(label = "%checkbox", properties = "showAsSwitcher=true")
public boolean checkbox();

@DDMFormField(label = "%date", type = "date")
public String date();

@DDMFormField(
	label = "%numeric", properties = "placeholder=%seconds",
	type = "numeric",
	validationErrorMessage = "%please-enter-an-integer-between-0-and-60-seconds",
	validationExpression = "(numeric >= 0) && (numeric <= 60)"
)
public String numeric();

@DDMFormField(
	label = "%select", optionLabels = {"%foo", "%bar"},
	optionValues = {"foo", "bar"}, type = "select"
)
public String select();

@DDMFormField(label = "%text")
public String[] text();

Visit Form Field Types Reference to learn more about all the available field types. See Field Type Constants for the type variable names of each field type.

After annotating each form field, define the layout of the form right above the class declaration with the DDMFormLayout annotation.

@DDMForm
@DDMFormLayout(
	paginationMode = com.liferay.dynamic.data.mapping.model.DDMFormLayout.SINGLE_PAGE_MODE,
	value = {
		@DDMFormLayoutPage(
			{
				@DDMFormLayoutRow(
					{
						@DDMFormLayoutColumn(size = 6, value = "text"),
						@DDMFormLayoutColumn(size = 6, value = "checkbox")
					}
				),
				@DDMFormLayoutRow(
					{
						@DDMFormLayoutColumn(size = 6, value = "select"),
						@DDMFormLayoutColumn(size = 6, value = "numeric")
					}
				),
				@DDMFormLayoutRow(
					{@DDMFormLayoutColumn(size = 12, value = "date")}
				)
			}
		)
	}
)

Use the DDMFormLayoutRow annotation and the DDMFormLayoutColumn to arrange your form fields in the rows and columns you need for your UI.

Write the Form Declaration

Create a new implementation of ConfigurationDDMFormDeclaration to register your new configuration form class.

@Component(
	property = "configurationPid=com.acme.v1d9.internal.configuration.V1D9Configuration",
	service = ConfigurationDDMFormDeclaration.class
)
public class V1D9ConfigurationDDMFormDeclaration
	implements ConfigurationDDMFormDeclaration {

	@Override
	public Class<?> getDDMFormClass() {
		return V1D9ConfigurationForm.class;
	}

}

Note that the configurationPid in the Component annotation must match the fully qualified class name of the configuration interface.