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Sling model – Retrieving properties of child resources | AEM Community Blog Seeding

Forum|Forum|4 years ago
September 7, 2021
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Sling model – Retrieving properties of child resources by Kiran

Abstract

In AEM, we fetch the values of multiple properties via java code and display them in HTL.

Common Way of fetching the properties:

Resource resource = resourceResolver.getResource(request.getParameter("resourcePath"));
//Adapting the resource to a node
resource.adaptTo(Node.class).getProperties();
//Adapting the resource to an asset
resource.adaptTo(Asset.class).getMetadata();
//Adapting the resource to valuemap
resource.adaptTo(ValueMap.class).get("propertyName", String.class);
There are many other adapters available that we can adapt a resource with. You can check them here.

Fetching the property values of a sub-resources becomes complex here. So, lets discuss a simpler way to resolve this problem.

Create a new sling model:

Let’s create a new model with the properties that we need from the child nodes. In the below example, the resource is an asset.

@Model(adaptables = Resource.class, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
public class ChildResourceModel {

@Inject
@Named("jcr:content/metadata/dc:title")
private String title;

@Inject
@Named("jcr:content/metadata/dc:description")
private String description;

@Inject
@Named("jcr:content/cq:name")
private String name;

public String getTitle() {
return title;
}

public String getDescription() {
return description;
}

public String getName() {
return name;
}

}