Java Concepts

Some times it may require our portlet when some action performed. We can refresh liferay portlet through the javascript. <script type="text/javascript"> jQuery(document).ready(function() {           Liferay.Portlet.refresh('#p_p_id_ testjson_WAR_testjson _'); } </script> Bold word is the portlet name

Some times it may require you to create url in class. Its quite easy task to do , Here you follow as , ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest. getAttribute(WebKeys.THEME_DISPLAY); long plid = PortalUtil.getPlidFromPortletId(themeDisplay.getScopeGroupId(),<portlet-name>);          PortletURL portletURL = PortletURLFactoryUtil.create(actionRequest ,<portlet-name>, plid ,PortletRequest.RENDER_PHASE);          portletURL.setWindowState(LiferayWindowState.POP_UP);          portletURL.setPortletMode(LiferayPortletMode.VIEW);          portletURL.setProperty("portletName", <portlet-name>);          portletURL.setParameter("type", "add"); For Custom portlet name will be some thing as like this <name>_WAR_<name>

In some seceniros you may need to hide the portlet, In liferay it is easy as just add the attribute. renderRequest.setAttribute(WebKeys.PORTLET_CONFIGURATOR_VISIBILITY, false); That it !!! Above renderRequest  will set  in hiding 

Scenrio:           Accessing the other custom portlet JSON services in our custom portlet through the javascript. Step:1 Enable remote-servie = true in service.xml as shown and build service to generate the services <service-builder package-path="com.liferay.testjson"> <namespace>custom</namespace>          <entity name="jsontest" remote-service="true" local-service="true" uuid="true">                      <column name="id" type="int" primary="true" />                       <column name="name" type="String"></column>                     <column name="desc" type="String"></column>     </entity>   </service-builder> Step2:   Open the class XXXXServiceImpl.class ...

  Whenever we create from in liferay ,it is required cursor to focus on the first field.   Suppose we can have form like this   <aui:from name="fm" method="post" action="${updateActionURL}">             <aui:input  name="title" label = "Title"/>        <aui:input  name="desc" label = "Desc"/>       <aui:button type="submit" value ="save"/> <.aui:form>  If we think title should be highlited on page load , following script is also required. <aui:script> Liferay.Util.focusFormField(document.<portlet:namespace/>fm.<portlet:namespace/>title); </aui:script> Deploy your project and refresh your page . We can see the first field is highlighted. These source are avaliable in the follwing path.       portal-web/docroot/html/js/liferay

Success Message                   In Class                           SessionMessages.add(request, "record-updated");                In JSP                           <liferay-ui:success key="record-updated" message="record-updated-sucessfully" />                Language.properties                            record-updated  = Your record updated successfully.          ...

    In rare it may happens, you have to submit the form with out refresh the page (actionURL ) and save the parameters in the DB.    Jus Copy the below code , Here i am using alloy UI to submit the form and here not need to append any parametrs to the URL .you will get the parameters values from request parameters. <portlet:actionURL var="formsubmissionURL" /> <aui:script use="aui-io-request,aui-node" > Liferay.provide(window,'submitForm', function() { var A = AUI(); A.io.request('${formsubmissionURL}',{ method: 'POST', form: { id: '<portlet:namespace />fm' }, on: { success: function(){     }   }   });   }); </aui:script > <aui:form action="#" method="POST" id="fm" name="fm" >      <aui:input type="text" name="name"/>      <aui:button type="submit" value="Save" /...