Apply Social Bookmarks

Social bookmarks in Liferay let users share portal content on social networks. When social bookmarks are enabled, a row of icons appears below the content that lets users share it with Twitter, Facebook, and Google Plus. You’ve probably seen this before in some of Liferay’s built-in portlets. The Blogs portlet is a good example. The row of share icons appears below each blog entry in the portlet.

Figure 1: Social bookmarks are enabled in the built-in Blogs portlet

Figure 1: Social bookmarks are enabled in the built-in Blogs portlet

Since each piece of content in a portlet is an asset, your portlet needs to be asset enabled before you can add social bookmarks.

Users naturally want to share the greatest of insults with the world! To help demonstrate this feature, a custom Insults portlet is used in this tutorial’s examples. You can find the Insults portlet complete with social bookmarks enabled on Github.

You can show social bookmarks in your portlet’s view of your custom entity or, if you’ve implemented asset rendering, you can show social bookmarks in the full content view in an Asset Publisher portlet.

As an example, the Insult portlet’s view JSP file view_insult.jsp shows an insult entity with the social bookmarks asset feature.

In your entity’s view JSP, you can use ParamUtil to get the entity’s ID from the renderRequest. Then you can create an entity object using your -LocalServiceUtil class.

long insultId = ParamUtil.getLong(renderRequest, "insultId");
Insult ins = InsultLocalServiceUtil.getInsult(insultId);

Now you need to add the social bookmark component. This is done with the liferay-ui:social-bookmarks tag. Here’s the liferay-ui:social-bookmarks tag for the Insults portlet:

    title="<%= ins.getInsultString() %>"
    url="<%= PortalUtil.getCanonicalURL((PortalUtil.getCurrentURL(request)), themeDisplay, layout) %>" 

There are a some things to take note of in this tag. When displayStyle is set to horizontal, the flags indicating the number of shares for each button are positioned to the right. This is the case in the above screenshot. Setting displayStyle to vertical positions the flags above each share button.

Figure 2: Here are the share buttons with displayStyle set to "vertical".

Figure 2: Here are the share buttons with `displayStyle` set to `"vertical"`.

The target attribute is the HTML target for the link. Setting it to _blank opens a new browser tab or window. The title attribute is sent to the social service and becomes part of the link you create there, as does the URL.

Also, the specific URL of the shared content on your site is set with url. The URL for viewing the content is retrieved using PortalUtil.

Now you have a JSP that lets your users share content in your portlet.

If you haven’t already connected your portlet’s view to the JSP for your entity, you can refer here to see how to connect your portlet’s main view JSP to your entity’s view JSP.

Now redeploy your portlet and refresh the page so that the your plugin’s UI reloads. The social bookmarks UI component now shows in your entity’s view.

Figure 3: The new JSP lets users share content in your portlet.

Figure 3: The new JSP lets users share content in your portlet.

Great! Now you know how to let users share content in your asset enabled portlets.

Another thing you might want to do is perform permissions checks to control who can rate content. For example, the Add Insult and Permissions buttons of the Insults portlet are wrapped in a permissions check in the view.jsp. For more information on this, see the Learning Path Checking for Permissions in the UI.

Related Topics

Asset Enabling Custom Entities

Implementing Asset Renderers

Liferay UI Taglibs

User Interfaces with AlloyUI

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