How to Add/Update/View tags for the user in Liferay

Question

I have a following requirement regarding tags and users.

• Tags should be searched based on the email address specified in the text box.
• Tags available for the particular user to be displayed based on the email address after search.
• There should be option to add/modify multiple tags for the users based on their emailid specified in the text box.

I have done coding for adding the tags to the users as follows

JSP:

<portlet:actionURL var="addTagsURL"  name="addTags"/>    
<aui:form action="<%=addTagsURL%>" method="post" name="submit">
    <aui:input name="emailAddress" id="emailAddress" label="Email Address">
        <aui:validator name="required" />       
    </aui:input>
    <liferay-ui:asset-tags-error />
    <aui:input name="tags" type="assetTags" />
    <div>
        <liferay-ui:asset-tags-selector />
    </div>
    <aui:input type="Submit" name="Submit" value="Submit"></aui:input>
</aui:form>

Action class:

public void addTags(ActionRequest actionRequest,ActionResponse actionResponse){
        String emailAddress=ParamUtil.getString(actionRequest, "emailAddress");
        log_.info("user email address from form========>"+emailAddress);
        ThemeDisplay themeDisplay = (ThemeDisplay)actionRequest.getAttribute(WebKeys.THEME_DISPLAY);        
        User user;
        try {
            user = UserLocalServiceUtil.getUserByEmailAddress(themeDisplay.getCompanyId(), emailAddress);
            ServiceContext serviceContext = ServiceContextFactory.getInstance(actionRequest);
            AssetEntryLocalServiceUtil.updateEntry(user.getUserId(), themeDisplay.getScopeGroupId(),"com.liferay.portal.model.User", user.getUserId(),null, serviceContext.getAssetTagNames());
            log_.info("user email address========>"+user.getEmailAddress());
            log_.info("UserId is=========>"+user.getUserId());
            String tags[]=serviceContext.getAssetTagNames();
            log_.info("Tags are====>"+tags.toString());         
        } catch (PortalException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

By above code i can have UI to add the tags to the users.But if i want to delete the tags for particular user how can i do and if any API or tags are there please guide me.

For retrieval purpose of tags based on the emailAddress specified in the textbox, I just using ServiceBuilder concept by querying form tables AssetEntry_AssetTags.Is it correct way of doing to display tags available for a given emailAddress.

Answer 1

You should be able to get asset tags associated with user entity by below API method. com.liferay.portlet.asset.service.AssetTagLocalServiceUtil

public static java.util.List<com.liferay.portlet.asset.model.AssetTag> getTags( long classNameId, long classPK)

Where classpk would be userId and classNameId would be of User class.

Hope this helps.