How get current selected page path in datasource sling model

[codingStar]

Hi,

I have a custom dropdown in page properties Basic Tab, This dropdown show while creating new page. I want take the current selected page and get values from OSGi service to show the drop.

How I can get the current page path in datasource sling model?

Below is my code.

1. DatasourceModel.java

@Model(adaptables = SlingHttpServletRequest.class)
public class DatasourceModel {

    private static final Logger LOG = LoggerFactory.getLogger(DatasourceModel.class);

    @Self
    protected SlingHttpServletRequest request;

    @inject
    @required
    @SlingObject
    private ResourceResolver resourceResolver;

    @PostConstruct
    public void init(){
        // get List of values from OSGi service by passing current page(parent page) path
        ValueMap valueMap = new ValueMapDecorator(new HashMap<>());
        valueMap.put("text", "textOne");
        valueMap.put("value", "valueOne");
        List<Resource> resourceList = new ArrayList<>();
        resourceList.add(new ValueMapResource(resourceResolver,
                new ResourceMetadata(), "nt:unstructured", valueMap));
        DataSource ds = new SimpleDataSource(resourceList.iterator());
        request.setAttribute(DataSource.class.getName(),ds);
    }

}

2. datasource.html

<sly data-sly-use="com.mysite.core.models.DatasourceModel"/>

3. dialog.xml

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:granite="http://www.adobe.com/jcr/granite/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
    jcr:primaryType="nt:unstructured"
    jcr:title="Page"
    sling:resourceType="cq/gui/components/authoring/dialog"
    extraClientlibs="[cq.common.wcm,core.wcm.components.page.v3.editor,cq.wcm.msm.properties,granite.contexthub.configuration,cq.siteadmin.admin.properties,core.wcm.components.image.v3.editor]"
    helpPath="https://www.adobe.com/go/aem_cmp_page_v3"
    mode="edit"
    trackingFeature="core-components:page:v3">
    <content
        granite:class="cq-dialog-content-page"
        jcr:primaryType="nt:unstructured"
        sling:resourceType="granite/ui/components/coral/foundation/container">
        <items jcr:primaryType="nt:unstructured">
            <tabs
                granite:class="cq-siteadmin-admin-properties-tabs"
                jcr:primaryType="nt:unstructured"
                sling:resourceType="granite/ui/components/coral/foundation/tabs"
                size="L">
                <items jcr:primaryType="nt:unstructured">
                    <basic
                        jcr:primaryType="nt:unstructured"
                        jcr:title="Basic"
                        sling:resourceType="granite/ui/components/coral/foundation/fixedcolumns">
                        <items jcr:primaryType="nt:unstructured">
                            <column
                                jcr:primaryType="nt:unstructured"
                                sling:resourceType="granite/ui/components/coral/foundation/container">
                                <items jcr:primaryType="nt:unstructured">
                                    <mydropdown
                                        cq:showOnCreate="{Boolean}true"
                                        jcr:primaryType="nt:unstructured"
                                        sling:resourceType="granite/ui/components/coral/foundation/form/select"
                                        fieldLabel="My Dropdown"
                                        name="./mydropdown">
                                        <datasource
                                            jcr:primaryType="nt:unstructured"
                                            sling:resourceType="/apps/mysite/components/datasource"/>
                                    </mydropdown>
                                </items>
                            </column>
                        </items>
                    </basic>
                </items>
            </tabs>
        </items>
    </content>
</jcr:root>

[Imran__Khan]

Use below approach to have dynamic dialog dropdown using datasource using servlet.

https://unlocklearning.in/dynamic-dropdown-in-aem/

http://www.sgaemsolutions.com/2019/01/dynamically-populate-drop-down-values.html

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/how-to-get-the-current-pag...

This should be path of servlet -> sling:resourceType="/apps/mysite/components/datasource"

[ayush-804 · Accepted solution]

Hi @codingStar 

You can try below snippet to get current page path in the java class.

String requestPagePath = StringUtils.EMPTY;
String pagePath = StringUtils.EMPTY;
Enumeration<String> values = request.getHeaders("Referer");
if (values != null){
    while (values.hasMoreElements()) {
        requestPagePath= values.nextElement();
    }
}

// to get current page path while creating a new page
if (requestPagePath.contains("createpagewizard.html/")) {
    pagePath = requestPagePath.split("createpagewizard.html")[1];
}

// to get current page path while opening properties of existing page
RequestParameter resourceParameter = request.getRequestParameter("item");
if(resourceParameter != null && StringUtils.isNotEmpty(resourceParameter.getString())) {
    pagePath = resourceParameter.getString();
}

[Raja_Reddy]

Hi  @codingStar 

To get the current page path in your `DatasourceModel.java` class, you can use the `Resource` object available in the `SlingHttpServletRequest` object. You can get the current page's `Resource` object using the `getResource()` method of the `SlingHttpServletRequest` object. Once you have the `Resource` object, you can get its path using the `getPath()` method.

---------------------
@Model(adaptables = SlingHttpServletRequest.class)
public class DatasourceModel {

private static final Logger LOG = LoggerFactory.getLogger(DatasourceModel.class);

@Self
protected SlingHttpServletRequest request;

@Inject
@Required
@SlingObject
private ResourceResolver resourceResolver;

@PostConstruct
public void init(){
// get current page path
Resource resource = request.getResource();
String currentPagePath = resource.getPath();

// get List of values from OSGi service by passing current page(parent page) path
ValueMap valueMap = new ValueMapDecorator(new HashMap<>());
valueMap.put("text", "textOne");
valueMap.put("value", "valueOne");
List<Resource> resourceList = new ArrayList<>();
resourceList.add(new ValueMapResource(resourceResolver,
new ResourceMetadata(), "nt:unstructured", valueMap));
DataSource ds = new SimpleDataSource(resourceList.iterator());
request.setAttribute(DataSource.class.getName(),ds);
}

}
-----------------------------------------------

[arunpatidar]

Hi @codingStar 

you can get the curent page path from the URL.

example : if you decode item query parem you will get the page path

http://localhost:4502/mnt/overlay/wcm/core/content/sites/properties.html?item=%2Fcontent%2Fwknd%2Fla...

[kautuk_sahni]

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