CQ5 - Ausblenden einer Registerkarte innerhalb einer Komponente dialog-je nach Benutzer-Gruppe?

Dies erreicht werden kann, mit ein benutzerdefiniertes servlet und ein dialog-Ereignis-listener.

Die listener-Funktion macht eine Anfrage an das servlet übergeben, die aktuellen Benutzer-ID und die gewünschte Gruppe. Der dialog kann dann ausgeblendet werden, basierend auf der servlet-Antwort.

Hier ist ein Beispiel dialog.xml für ein CQ5 Komponente:

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root 
    xmlns:cq="http://www.day.com/jcr/cq/1.0" 
    xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="cq:Dialog" 
    xtype="dialog">
    <listeners jcr:primaryType="nt:unstructured"
        loadcontent="function(dialog) {
            var url = '/bin/member.json';

            //check if current user belongs to administrators group
            url = CQ.HTTP.addParameter(url, 'userId', CQ.User.getUserID());
            url = CQ.HTTP.addParameter(url, 'groupId', 'administrators');

            var result = CQ.HTTP.eval(url);

            if (!result.isMember) {
                //hide "tab2" if user is not an administrator
                dialog.findByType('tabpanel')[0].hideTabStripItem(1);
            }
        }" />
    <items jcr:primaryType="cq:WidgetCollection">
        <tab1 jcr:primaryType="cq:Widget" title="Text" xtype="panel">
            <items jcr:primaryType="cq:WidgetCollection">
                ...
            </items>
        </tab1>
        <tab2 jcr:primaryType="cq:Widget" title="Image" xtype="panel">
            <items jcr:primaryType="cq:WidgetCollection">
                ...
            </items>
        </tab2>
    </items>
</jcr:root>

Und hier ist die entsprechende servlet:

import java.io.IOException;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonGenerator.Feature;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.day.cq.security.Group;
import com.day.cq.security.User;
import com.day.cq.security.UserManager;
import com.google.common.collect.ImmutableMap;

@Component(immediate = true)
@Service
@Properties({
    @Property(name = "service.description", value = "Group Member servlet checks if a user is a member of a group."),
    @Property(name = "sling.servlet.paths", value = "/bin/member")
})
public class GroupMemberServlet extends SlingAllMethodsServlet {

    /** Required. */
    private static final long serialVersionUID = 1L;

    /** Logger */
    private static final Logger LOG = LoggerFactory.getLogger(GroupMemberServlet.class);

    private static final JsonFactory FACTORY = new JsonFactory().disable(Feature.AUTO_CLOSE_TARGET);

    private static final ObjectMapper MAPPER = new ObjectMapper();

    @Override
    protected void doGet(final SlingHttpServletRequest request, final SlingHttpServletResponse response) {
        final UserManager userManager = request.getResourceResolver().adaptTo(UserManager.class);

        final String userId = request.getRequestParameter("userId").getString();
        final String groupId = request.getRequestParameter("groupId").getString();

        final Group group = (Group) userManager.get(groupId);

        final User user = (User) userManager.get(userId);

        writeJsonResponse(response, ImmutableMap.of("isMember", group.isMember(user)));
    }

    private void writeJsonResponse(final SlingHttpServletResponse response, final Object object) {
        response.setContentType("application/json");
        response.setCharacterEncoding("utf-8");

        try {
            final JsonGenerator generator = FACTORY.createJsonGenerator(response.getWriter());

            MAPPER.writeValue(generator, object);
        } catch (final JsonGenerationException jge) {
            LOG.error("error generating JSON response", jge);
        } catch (final JsonMappingException jme) {
            LOG.error("error mapping JSON response", jme);
        } catch (final IOException ioe) {
            LOG.error("error writing JSON response", ioe);
        }
    }
}

InformationsquelleAutor Mark Daugherty