Understanding Sling Models in AEM

Learn about Sling Models from the Digital Experience Experts

New Features in AEM 6.1 Sightly

In this blog, I will explain new features introduced in AEM6.1 Sightly. These features will make your sightly code more shorter and simple. These features are listed below.

  1. Introduction of <sly> tag.
  2. data-sly-repeat
  3. URL manipulation
  4. local for i18n

I will explain these features in the form of questionnaires, so let’s start.

Q1). What is the use of <sly> tag?

This tag is used to remove extra divs those are generated when we include a resource in our component’s HTML file using Sightly code.

Q2). We can do that using data-sly-unwrap, why <sly>?

For explaining this, Let’s consider we have to include a parsys component in our HTML without extra divs using data-sly-unwrap then your code line will be-

It will work fine but in this case, you have to first define a <div> tag to use data-sly-resource attribute and you also have to write data-sly-unwrap to remove this extra <div> tag.
Isn’t it simple if you don’t have to write this extra <div> tag and data-sly-unwrap.

Q3). How to use <sly> tag? or what is the syntax of <sly> tag?

If you want to write the same line using <sly> tag then code will be-

Here, you can see the difference between old approach and <sly> tag.

Q4). will <sly> tag not generate any extra divs?

Yes, it will not generate any extra <div> tag or any HTML DOM element, you can think it as a replacement of data-sly-unwrap Sightly tag.

Q5). is data-sly-unwrap is deprecated or removed from AEM6.1 Sightly?

No, you can use it as well but as you have a much better <sly> tag then I think data-sly-unwrap is not required. I think, It is available only to support the AEM6.0 Sightly code.

Q6). What is the data-sly-repeat tag in Sightly?

This tag is used to iterate any of the list element.

Q7). Can we do that using data-sly-list in Sightly?

Yes, you can do that by using data-sly-list but the only difference is that, if you use data-sly-repeat, you will not have to provide any container element.

Q8). Not getting your point, could you please elaborate on your statement i.e. any container element?

Let us consider you want to iterate all child pages of currentPage object then first use data-sly-list you will write the code as –

Output will be generated as –

And when you view the HTML element structure in you debugger then it will be –

Now use data-sly-repeat

Output will be –

And when you view the HTML element structure in you debugger then it will be –

You can see these generated DOM elements in debugger’s Elements tab.

Q9). We can achieve same DOM structure using data-sly-list, is it required to use data-sly-repeat for the same?

No, it is not required but using data-sly-repeat your HTML code will become shorter. For ex. If you want to achieve

output then the code you have to write with data-sly-list will be –

Here you have to add data-sly-unwrap and <div> tag for each element. But by using data-sly-repeat, These tags will not be required and your HTML looks more refined, simple and less complex.

Q10). What is URL manipulation in AEM6.1 Sightly?

In AEM 6.1 you can do some URL manipulations which are not available in AEM6.0 Sightly. Some of the examples are –
Adding extension, code is –

Output will be –

Adding scheme (http or https) if required –

Output will be –

Adding Selectors –

Output will be –

Adding Fragments –

Output will be –

Q11). What is the locale for i18n?

This locale is newly introduced object in AEM6.1. When we work with i18n in Sightly we can use this object to set custom locale. It can be used as –

Note –  This object is not present in AEM6.

I am also sharing the Git repository link where you can find demo examples for these properties.
Git repository link is –


Happy Coding..!!

Ankur Chauhan
Tech Lead

ResourceResolver Object in AEM6.1/6.0 Sling Services

As we know that getAdministrativeResourceResolver() method has been deprecated from ResourceResolverFactory interface in AEM6 and above versions. Then the question is-

Q1). How to get ResourceResolver object in Sling services in AEM6.0 and above versions?

If you are working with AEM6 or AEM6.1 then you have two options-

  1. If you know the credentials of an User and want that user credential in your service then go with getResourceResolver() method.
  2. If you don’t have user credentials and want to access ResourceResolver object then you have to use
    getServiceResourceResolver() method. as shown below –
    Note : – In this case you have to add a configuration in your Felix Console to your AEM instance.
Q2). What configuration I need to do for AEM6.0?

For AEM6.0,  configuration steps are –

  1. Go to Felix Console configuration tab i.e. http://localhost:4502/system/console/configMgr
  2. Search for User Mapping as shown in figure-
  3. Click on this service to edit it’s configuration.
  4. Here you have to add one entry and the syntax of the entry is –
    “Bundle symbolic Name”:”SubServieName”=”User Name”

    1. “Bundle symbolic Name :-  Here you have to add the bundle symbolic name where you are creating service.
    2. “SubServieName”:- This is the name you provided as a value of  ResourceResolverFactory.SUBSERVICE property i.e. “testService”.
    3. “User Name” :- This  is the user name for ex. “admin”So in my case this configuration field value becomes “com.blog.blog-bundles:testService=admin”
    After adding this entry your configuration looks like-
  5. Now everything is set for AEM6.0.
Q3). will these configurations work for AEM6.1?


Q4). What configuration, do I need for AEM6.1?

If you are working with AEM6.1 that you have to complete all steps explained for AEM6.0. To make these configurations  working for AEM6.1, you have to ensure that the “jcr:PrimaryType” of your user is “rep:SystemUser” i.e if you are trying to use “admin” user. Then it will not work as it’s “jcr:PrimaryType” value is  “rep:User”.

Q5). What do you mean by “jcr:PrimaryType” as “rep:SystemUser”?

It means that user is just not a repository user. It must be system user.

Q6). How to create System User in AEM6.0?

For creating System User, follow these steps-

  1. Go to CRX Explorer http://localhost:6502/crx/explorer/index.jsp
  2. Login as Administrator i.e. using “admin:admin”
  3. Click on “User Administration”, you will see a screen just like this –
  4. Here you will see a option of “Create System User”, Click on this button.
  5. Add a value for User Id field for ex. “testUser”
  6. Click on green button.
  7. Close the window.
  8. Go to CRXDE Lite, your “testUser” will be created under /home/system directory. If you are not able to find then search for “testUser” in home screen. You will get the location.
Q7). How to use this user?

In your “Apache Sling Service User Mapper Service” configuration change your entry from –
com.blog.blog-bundles:testService=admin to com.blog.blog-bundles:testService=testUser

Q8). Should I do this configuration at “Apache Sling Service User Mapper Service” configuration or should I create a “Apache Sling Service User Mapper Service Amendment” service configuration?

You can do it by both ways. But as “Apache Sling Service User Mapper Service” is a service factory in AEM6.1 so as best practices you should create another service configuration by clicking on plus button at the front of “Apache Sling Service User Mapper Service Amendment”.
When you click on “+” button, one new configuration will be created at the end. Click on that service and do this configuration there. Your code will work in same manner as working before.

Happy Coding..!!

Ankur Chauhan
Tech Lead.