Developer tips and tricks.

There several way to check user isLogin in liferay. 1. In Java code: From ThemeDisplay object ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY); boolean signedIn = themeDisplay.isSignedIn(); 2. In Jsp file: <%@ taglib uri = "http://liferay.com/tld/theme" prefix = "liferay-theme" %> <liferay-theme:defineObjects />  < c:choose >   < c:when test = " <%= themeDisplay . isSignedIn() % > " >   <c:when >  < c:otherwise >  <c:otherwise > </ c:choose > 3. In vm file : if ($is_signed_in)  4. In Web content template: #set ($isSignedIn = $request.get("remote-user")) #if ($isSignedIn!='') #end   5. In javascript file:  <script >   $(document).ready(function(){          if((Liferay.ThemeDisplay.isSignedIn())){               ...

Liferay developers often need to find different from render/servlet request. Here below i share some code to get different url in liferay Sample code:         HttpServletRequest servletRequest = PortalUtil.getHttpServletRequest(request);         String currentCompleteUrl = PortalUtil.getCurrentCompleteURL(servletRequest);         try {                         String renderCurrentURL =    PortalUtil.getCurrentURL(request);             String servletRequestCurrentURL = PortalUtil.getCurrentURL(servletRequest);             String canonicalURL    = PortalUtil.getCanonicalURL(currentCompleteUrl, themeDisplay, themeDisplay.getLayout());          ...