Wednesday, 25 July 2012

Filling Html Data From Sever Into Html Element Using Ajax And Spring MVC 3.0

//placed this code in controller in controller
@RequestMapping(value = "/show.htm")
protected ModelAndView showStudent(@RequestParam("id") Long studentId,HttpServletRequest request,HttpServletResponse response) throws Exception {
         System.out.println("inside ajax");
       //getting Student Object From Database using StudentDao
        Student student = studentDao.getStudent(studentId);
      //createing ModelAndView Object
      ModelAndView modelAndView = new ModelAndView("show");
// putting student Into the model for used into the show page
return modelAndView;

//put this code in jsp within script tag
function viewStudent(studentId)
            //create ajax object using jquery or prototype or mootools or javascript
        //here we use jquery
         data:({id : studentId}),     //parameter passed ti the controller
        success:function(data){   // callback function after the request is completed

            // 'studentViewDiv' is the target div
            // where we want to display our response
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Friday, 20 July 2012

Disabling AutoSaving Of Object Into Database In Grails.


In Grails if we get object from database and change it's properties then the persistence context save that object to database.

This Condition would not applied for newly created object.



Purpose :- it discards changes that are made persistence.

def student =Student.get(1)student .name = "Ankit"
student.discard() // changes won't be applied now


Discard is same as Hibernate's evict method .
Discard inform persistence that changes are not saved into the database.


Tuesday, 10 July 2012

Applying Float Left Or Float Right Style Using Javascript

For Float Left
var element = document.getElementById('Element Id'); "left" ; "left" ;