To render different versions of the header based on whether the user is logged in or logged out in Adobe Experience Manager (AEM) using Experience Fragments (XF), you can take the following approach. This will allow you to customize the header display on a per-page basis (like the specific 3-4 pages you mentioned), while maintaining the overall structure of your AEM template.
Solution Overview:
- Use Experience Fragments (XFs): You already have the Experience Fragment (XF) created for the default header. You can create another Experience Fragment for the logged-in user’s slim header.
- Use the sling:auth component: You can use the AEM sling:auth component to detect whether the user is logged in or not.
- Modify Template Structure: Update the template (Template A) to conditionally include different Experience Fragments based on the user's authentication status.
- Target Specific Pages: This logic should only be applied to the specific pages you want to target.
Step-by-Step Implementation:
1. Create Experience Fragments for the Different Headers
You will need two Experience Fragments:
- Default Header (default_header): This will be used for non-logged-in users.
- Slim Header (slim_header): This will be used for logged-in users.
To create these Experience Fragments:
- Go to AEM Sites.
- Create new Experience Fragments for the two header variations under a folder (e.g., /content/experience-fragments/header/).
- default_header: This is the default header experience fragment.
- slim_header: This is the slim version of the header for logged-in users.
2. Modify the AEM Template to Render the Appropriate Header
In Template A, where the Experience Fragment is currently included for the header, you will need to conditionally render either the default_header or slim_header based on the user’s login status.
Create a Sling Model or Use the request object:
- A common way to check for a logged-in user in AEM is by using a Sling Model or accessing the request object directly to check the session attributes (whether the user is logged in).
Here's a basic example using Sling Models:
Create a Sling Model to check the user login status:
@Designate(ocd = HeaderFragmentModel.class)
@Component(immediate = true, configurationPolicy = ConfigurationPolicy.REQUIRE)
@Designate(ocd = HeaderFragmentModel.class)
public class HeaderFragmentModel {
@Activate
@Modified
public void activate() {
// You can access the request and check if the user is logged in
this.isLoggedIn = Optional.ofNullable(request.getAttribute(SlingConstants.SLING_AUTH_REQUEST_USER))
.map(User.class::cast)
.isPresent();
}
public boolean isLoggedIn() {
return isLoggedIn;
}
private boolean isLoggedIn;
}Alternatively, you can check the request directly in the HTL (Sightly) file:
<sly data-sly-use.headerFragment="com.example.HeaderFragmentModel">
<sly data-sly-test="${headerFragment.isLoggedIn}">
<!-- Render slim header for logged-in users -->
<sly data-sly-include="${'header/slim_header'}"></sly>
</sly>
<sly data-sly-test="${!headerFragment.isLoggedIn}">
<!-- Render default header for non-logged-in users -->
<sly data-sly-include="${'header/default_header'}"></sly>
</sly>
</sly>
Modify Template A:
- Within your Template A, where the header is rendered, insert the conditional logic to check whether the user is logged in or not. For this, you can either use HTL or a Sling Model to determine the login state and include the appropriate header Experience Fragment.
Inject the Correct Header into the Template: In your Template A (HTL file), conditionally render the default_header or slim_header Experience Fragments based on the user’s logged-in state.
For example:
<sly data-sly-test="${user.isLoggedIn}">
<sly data-sly-include="${'/content/experience-fragments/header/slim_header'}"></sly>
</sly>
<sly data-sly-test="${!user.isLoggedIn}">
<sly data-sly-include="${'/content/experience-fragments/header/default_header'}"></sly>
</sly>- Here, user.isLoggedIn will determine whether to render the logged-in (slim) or non-logged-in (default) version of the header.
3. Target Specific Pages Using Page-Specific Logic
To limit this header logic to only a few specific pages:
Use Page Properties: You can configure the pages you want the logic to apply to by adding a custom page property (e.g., page-header-version), and based on that property, include the appropriate header.
Example in Page Properties:
For pages that require the slim header, set a page property page-header-version to "slim".
In your HTL file, check this page property:
<sly data-sly-test="${pageProperties['page-header-version'] == 'slim'}">
<sly data-sly-include="${'header/slim_header'}"></sly>
</sly>
<sly data-sly-test="${pageProperties['page-header-version'] != 'slim'}">
<sly data-sly-include="${'header/default_header'}"></sly>
</sly>
This way, only the pages with the page-header-version set to "slim" will display the slim header.
4. Update the Template with Experience Fragments
If you're using the Editable Templates in AEM, you can edit the template (Template A) to include the correct header based on user authentication status. If you prefer using Static Templates, this can also be handled by editing the structure of the template directly and using conditional logic for header inclusion.
By leveraging Experience Fragments, Sling Models, and conditional logic in HTL, you can easily switch between different versions of the header (e.g., default vs. slim) based on the user's authentication state. Targeting specific pages can be done by setting page properties and applying conditional rendering logic to include the appropriate Experience Fragment for each page.
This approach is flexible, and ensures that only specific pages will render the appropriate header version based on the user's logged-in state.
