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vijays80591732
vijays80591732
Level 3
July 28, 2020
Solved

SlingModel @ChildResource is not working

  • July 28, 2020
  • 2 replies
  • 3862 views

Hi All,

 

I have a node called "entries" under the page. The "entries" node having some child nodes like entry1, entry2, entry3. The "entries" and child nodes "entry1" have been creating via code and I don't have any component for this. Now, I'm trying to access the "entries" node in a sling model but it's not working. Below is the screenshot of the node structure,

 

 

Below is the code,

 

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

        private static final Logger LOGGER = LoggerFactory.getLogger(HistoryModel.class);

        @Self
        private Resource currentResource;

        /*@ChildResource(name = "entries")
        private List<HistoryBean> entries;
*/
        @ChildResource(name = "entries")
        private Resource entries;

        @ChildResource(name="entries",injectionStrategy= InjectionStrategy.OPTIONAL,via = "resource")
        Resource child;

        public Resource getEntries() {
            return entries;
        }

        public Resource getChild() {
            return child;
        }

        @PostConstruct
        protected void postConstruct() {
            //Nothing inside
            LOGGER.debug("HistoryModel post construct Method().. calling..");
            LOGGER.debug("HistoryModel entries.. calling..{}", entries);
            LOGGER.debug("HistoryModel child.. calling..{}", child);

        }

Tried with @childResource. In the log, I'm getting null. anything wrong in the code? Can anyone help?

 

@arunpatidar26 @smacdonald2008 @arunpatidar26 @Ratna_Kumar @kautuk_sahni @wimsymons @cqsapientu69896 @vanegi @Veena_Vikram @varuns7990 @Theo_Pendle

 

Thanks,

Vijay

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Best answer by ChitraMadan

Hi @vijays80591732 ,

 

If this is not a component and you want to access it in Sling Model, then you can make use of a java class to read its child values and return in Sling Model in this way:

 

@Getter
@Setter
@Model(adaptables = Resource.class, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
public class HistoryModel {

@Inject
private List<WorkflowItem> workflowItems;

@Self
private transient Resource resource;

@PostConstruct
private void init() {
workflowItems = SomeUtilClass.getWorkflowItems(resource, "path to entries node");
}
}
 
And your Util Class method can have this code:
List<WorkflowItem>workflowItemsList = Collections.emptyList();
Resource workflowResource = resource.getResourceResolver().getResource("path to entries");
if (workflowResource != null && workflowResource.hasChildren()) {
workflowItemsList =
Lists.newArrayList(workflowResource.getChildren()).stream()
.map(child -> child.adaptTo(WorkflowItem.class))
.collect(Collectors.toList());
return workflowItemsList;
}
 
WorkflowItem class can be another Model class with Description and Message and other attributes as per your need.

2 replies

ChitraMadan
Community Advisor
ChitraMadanCommunity AdvisorAccepted solution
Community Advisor
July 28, 2020

Hi @vijays80591732 ,

 

If this is not a component and you want to access it in Sling Model, then you can make use of a java class to read its child values and return in Sling Model in this way:

 

@Getter
@Setter
@Model(adaptables = Resource.class, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
public class HistoryModel {

@Inject
private List<WorkflowItem> workflowItems;

@Self
private transient Resource resource;

@PostConstruct
private void init() {
workflowItems = SomeUtilClass.getWorkflowItems(resource, "path to entries node");
}
}
 
And your Util Class method can have this code:
List<WorkflowItem>workflowItemsList = Collections.emptyList();
Resource workflowResource = resource.getResourceResolver().getResource("path to entries");
if (workflowResource != null && workflowResource.hasChildren()) {
workflowItemsList =
Lists.newArrayList(workflowResource.getChildren()).stream()
.map(child -> child.adaptTo(WorkflowItem.class))
.collect(Collectors.toList());
return workflowItemsList;
}
 
WorkflowItem class can be another Model class with Description and Message and other attributes as per your need.
    Suraj_Kamdi
    Community Advisor
    Suraj_KamdiCommunity Advisor
    Community Advisor
    July 28, 2020

    @vijays80591732 

    try with 

    @ChildResource(injectionStrategy = InjectionStrategy.OPTIONAL)

    Collection<Resource> entries

     

    Hope this will help

    Suraj Kamdi
      vijays80591732
      vijays80591732Author
      Level 3
      October 4, 2020

      Thanks Suraj for your inputs. I have created a component and calling that from template.html. Now, getting the current resource and fetching the child nodes.

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