Validation BackEnd(Client Side) in Joomla

Using following code you can create a client side validation

<script>

  // our validation script

 function doValidate( f )

  {

  if(document.adminForm.task.value == 'gallarycat.cat_cancel')

  {

     return true;

  }

  if( document.formvalidator.isValid( f ) )

    {

                                alert('submit');

                    return true;

    }

    var form = document.adminForm;

    var validator = new myFormValidator();

    if( validator.isValid( form ) )

    {

                 alert("submit");

      submitform( pressbutton );

    }

    else

    {

      alert( 'Please correct any errors before submission.' );

    }

  }

</script>

Check user is login or not(Authentication) in joomla

you can check if user is login or not in joomla.

$user = JFactory::getUser();

if ($user->get('guest') == 1)

{

       echo “Not login”;

}

Else

{

   Echo “Loged user”;

}

use of session in joomla

use of session in joomla check following example

**********************

define session in joomla

**********************

$session = JFactory::getSession();

set session variable in joomla

---------------------------------

$session->set(‘name’,value); //set session

get session variable which set before in joomla

---------------------------------

$session->get(‘name’,value); // get session       

Hierarchy of Joomla component

You can see this example for Hierarchy of joomla component structure.

Example:

->com_gallary

                ->create Entry file same as component name like gallery.Php (Not optional)

                ->create Controller file like controller.php (Not optional)

                ->create models folder(optional if need model)(Create multiple models)

                                ->create model file  which name is same as controller name like gallery.php

                                   u can create multiple model in this folder with Controller name

add yesno field in admin grid

this is way to add dropdown / select field in magento admin grid

file path : app\code\local\Module_Name\Company_Name\Block\Adminhtml\block_name\Grid.php

$yesnoOptions = array('0' => 'No','1' => 'Yes','' => 'No');

 $this->addColumn('is_vendor', array(

           'header'    => Mage::helper('customer')->__('Is Vendor'),

           'index'     => 'is_vendor',

'type'      => 'options',

'options'   => $yesnoOptions,

       ));