Iterate through an ArrayList<String>

[demd43642519]

Hello everyone, I have this ArrayList list which is not empty. I am willing to iterate through it using HTL sly tags. What I've tried is:

${model.list.size}

-- this doesn't seems to work. I wrote a function in Jave which returns my list size and I can see it's not empty. Else I tried was:

This again returns nothing. Do I miss something or HTL can't iterate through a String ArrayList?

[Gaurav-Behl]

check htl-spec/SPECIFICATION.md at master · adobe/htl-spec · GitHub  or  htl-spec/SPECIFICATION.md at master · adobe/htl-spec · GitHub   per your use case

[smacdonald2008]

Here is an older AEM Community article that uses QueryBuilder API and places the result set into an ArrayList. You can see how HTL is used to display the list:

AEM QueryBuilder Sightly Example:

<div data-sly-test="${properties.search}" data-sly-use.v="com.community.querybuilder.HelloService">

<b>Here are the QueryBuilder results that corrresponds to ${properties.search}:</b>

    <ul data-sly-list="${v.files}">

        <li>${item}</li>

    </ul>  

</div>

Adobe Experience Manager Help | Creating a HTML Template Language component that uses the AEM QueryB...

[demd43642519]

Thank you for your reply. I've tried, doesn't seem to work       

<sly data-sly-use.model="blabla.core.models.MyModel.">

    <ul data-sly-list="${model.filterList}">

      <li>${item}</li>

    </ul> 

</sly>

• This is list... "filterList" : [ "Apps", "Web", "Social", "Email", "Docs & Stationery", "Print", "ATM", "Retail", "New Tech", "Events & Experiental", "Out of Home", "TV & Radio", "Collateral" ],

[smacdonald2008]

Post your Java backend - looks like you have not properly specified the correct backend.

[smacdonald2008]

I will update this example - based on Java that creates the LIST and HTL to iterate it.

[arunpatidar]

Do you have  getfilterList method in your model?

The Model class should contain a method named getfilterList() that returns a List instance. This List object contains a result set that is displayed in the HTL component:

public List<String> getfilterList(){

return filterList;

}

or can you please post java and htl code?

[smacdonald2008]

Arun is 100% correct - I will get this working on the latest AEM and post both Java code and HTL code.

[smacdonald2008 · Accepted solution]

Works like a charm. List HTL Output:

Java backend (I used WCMUsePojo for this example):

package com.aem.htl.core;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.apache.sling.api.resource.Resource;

import org.osgi.framework.FrameworkUtil;

import org.osgi.framework.ServiceReference;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.adobe.cq.sightly.WCMUsePojo;

public class HelloService extends WCMUsePojo

{

  Logger logger = LoggerFactory.getLogger(HelloService.class);

  protected String searchterm; 

  private List<String> file;  

  @Override

  public void activate()

  {

      this.searchterm = getProperties().get("search", "").toLowerCase();

  }

  public List<String> getFiles()

  {

      //populate the 

      logger.info("The search term is");

      this.file = new ArrayList();

      this.file.add("Apple");

      this.file.add("Orange");

      this.file.add("Peach");

      this.file.add("Pear");

      return this.file;

    }

  }

HTL COde that displays the content of the LIST:

AEM LIST HTL Example:

<div data-sly-test="${properties.search}" data-sly-use.v="com.aem.htl.core.HelloService">

<b>Here are the QueryBuilder results that corrresponds to ${properties.search}:</b>

    <ul data-sly-list="${v.files}">

        <li>${item}</li>

    </ul> 

</div>

[demd43642519]

I have the following:

private ArrayList filterList;

public ArrayList getFilterList(){

return filterList;

}

As I mentioned, I am trying to iterate through an ArrayList. With a List is working as expected, but it's not working through an ArrayList.

I'm using an ArrayList because my sling model is using an Exporter. For some reason, if I declare my list as List, the exporter stop working, through ArrayList is working as expected.

This AEM is like a woman, haha.

[demd43642519]

EDIT: I've done the following and now it's working.

     <ul data-sly-list="${model.getFilterList}">

                <li>${item}</li>

            </ul>

Apparently, there was something wrong with the getter but I can't tell for sure.

Thank you all for your help!