Embedded collection
Specifying template values
An embedded collection builds a template control for a new collection member.
This template is rendered inside a <script type="text/html> in the output, and processed by javascript when adding a member.
By default no values will be present in the template controls.
If you want to pre-configure the template controls with values, you can do so by adding a EntityPropertyTemplateValueResolver attribute on the corresponding EntityPropertyDescriptor.
See also EntityAttributeRegistrars.templateValue() for short-hand methods.
Example configuring list member template values
public void configure( EntitiesConfigurationBuilder entities ) {
Author authorTemplate = new Author();
authorTemplate.setName( "John Doe" );
entities.withType( Book.class )
.properties(
props -> props.property( "author[]" ) (1)
.attribute( EntityAttributeRegistrars.templateValue( authorTemplate ) ) (2)
);
}| 1 | property author[] represents a single member of the author collection |
| 2 | configure a fixed value that should be used for pre-filling the template controls |
For more complex scenario’s, you can also set the base EntityPropertyTemplateValueResolver to be used on the EntityPropertiesBinder.
See the javadoc or source code for more details.
|