How to add nested portlets(liferay) through code

Question

We have something called nested portlets in liferay. I want to add this portlet dynamically through code. Does anyone know the code for adding nested portlets, and add other

Answer 1

for complete example i'll assume that you want to add nested portlet to current page using another portlets action handler. (if used from render action you would not see nested portlet until next view of the page)

Add these methods to your code

private static String addPortlet(final long p_userId, final Layout p_layout, final String p_portletId, final String p_columnId, final int p_position, final boolean p_checkPermission)
                throws PortalException, SystemException
{
    if (p_layout.isTypePortlet()) {
        final LayoutTypePortlet layoutTypePortlet = (LayoutTypePortlet) p_layout.getLayoutType();

        final String portletId = layoutTypePortlet.addPortletId(p_userId, p_portletId, p_columnId, p_position, p_checkPermission);
        if (portletId != null) {
            final String rootPortletId = PortletConstants.getRootPortletId(portletId);
            final String portletPrimaryKey = PortletPermissionUtil.getPrimaryKey(p_layout.getPlid(), portletId);
            ResourceLocalServiceUtil.addResources(p_layout.getCompanyId(), p_layout.getGroupId(), 0, rootPortletId, portletPrimaryKey, true, true, true);
            LayoutLocalServiceUtil.updateLayout(p_layout.getGroupId(), p_layout.isPrivateLayout(), p_layout.getLayoutId(), p_layout.getTypeSettings());
        }
        return portletId;
    }

    return null;
}

private static void addNestedPortlet(final PortletRequest p_request) throws PortalException, SystemException {
    final ThemeDisplay themeDisplay = (ThemeDisplay) p_request.getAttribute(WebKeys.THEME_DISPLAY);
    final Layout layout = themeDisplay.getLayout();
    long userId = themeDisplay.getUserId();

    //create nested portlet and add it to "column-1"
    final String nestedPortletId = addPortlet(userId, layout, "118", "column-1", -1, false);

    //this will be used to target nested portlet's columns
    final String nestedColumnPrefix = "_" + nestedPortletId + "__";

    //default page layout (used by nested portlet) has two columns
    //we'll add two portlets (in this example two iframe portlets), one portlet to each column
    addPortlet(userId, layout, "48", nestedColumnPrefix + "column-1", -1, false);
    addPortlet(userId, layout, "48", nestedColumnPrefix + "column-2", -1, false);
}

If you would like, and probably you would, to add nested portlet to another page or not from portlet, you can lookup Layout and User instead of getting them from ThemeDisplay.