$params[] = array(
  'name' => 'fieldType',
  'label' => JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELDTYPE'),
  'type' => 'list',
  'options'=>array(
    'text'=>JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELD_OPTION_TEXT'),            
    'textarea'=>JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELD_OPTION_TEXTAREA'), 
    'select'=>JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELD_OPTION_SELECT'), 
    'multiselect'=>JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELD_OPTION_MULTISELECT'), 
    'radio'=>JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELD_OPTION_RADIO'), 
    'date'=> JText::_('PLG_USER_HKM_PROFILE_FIELDGROUP_FIELD_OPTION_DATE'),
    'file'=> 'Поле файл')
);

$params[] = array(
  'name' => 'fieldmyparams',
  'label' => 'Мои параметры (fieldtype=avatar&)',
  'type' => 'textarea'
);

function onContentPrepareData($context, $data)
{
	// Check we are manipulating a valid form.
	if (!in_array($context, array('com_users.profile','com_users.registration','com_users.user','com_admin.profile'))){
		return true;
	}

	$userId = isset($data->id) ? $data->id : 0;

	// Load the profile data from the database.
	$db = &JFactory::getDbo();		
					
	$db->setQuery(
		'SELECT profile_key, profile_value FROM #__user_profiles' .
		' WHERE user_id = '.(int) $userId .
		' AND profile_key LIKE \'hkm_profile.%\'' .
		' ORDER BY ordering'
	);
	$results = $db->loadRowList();

	// Check for a database error.
	if ($db->getErrorNum()) {
		$this->_subject->setError($db->getErrorMsg());
		return false;
	}

//2v3.su, берем параметры поля Аватар
//=====
	$userinfo=$this->params->get('userinfo'); 
//======  

	// Merge the profile data.
	$data->hkm_profile = array();
	foreach ($results as $v) {
		$k = str_replace('hkm_profile.', '', $v[0]);
		$v1arr=(JRequest::getVar('layout')=='edit')? explode("\n", $v[1]) : str_replace("\n", ", " ,$v[1]);


		$data->hkm_profile[$k] =((!empty($v1arr)&& isset($v1arr[1]))? $v1arr : $v[1]);

//2v3.su, устанавливаем обработчик на отображение поля Аватар в профиле. В данном случае это функция my_avatar.
//======
		if(!isset($userinfo->fieldmyparams)) continue;
		$fieldNum=str_ireplace('uniqueID', '', $k);				  
		$fieldmyparams=(is_array($userinfo->fieldmyparams))? $userinfo->fieldmyparams[$fieldNum] : $userinfo->fieldmyparams->$fieldNum;
		if(trim($fieldmyparams)){
		  parse_str($fieldmyparams, $params);			  				
		  if(!is_array($params) || !count($params) || !isset($params['fieldtype']) || !method_exists($this, 'my_'.$params['fieldtype'])) continue;              
		  if(!JHtml::isRegistered('users.'.$k))
			JHtml::register('users.'.$k, array(__CLASS__, 'my_'.$params['fieldtype']));				
		}
//=====			
		
	} 			
		
	return true;
}

//2v3.su
//======
function my_avatar($a){
//Обрабатываем загружаемое фото 	
	if(is_array($a)){
	  if(isset($_FILES['jform']['tmp_name']['hkm_profile'])){				 		
//подгружаем внешний скрипт images.php, для изменения размеров фото	
		if(!function_exists('sys__image_resize')){
		  $include=dirname(__FILE__).'/func/images.php';				  
		  if(!@is_file($include)) return false;		  
		  include_once($include);
		}
		$field_id=(isset($a['field_id'])) ? $a['field_id'] : '';			
		$path=(isset($a['path']) && $a['path']) ? $a['path'] : '/images/avatar/';
		$w=(isset($a['width']) && $a['width']) ? intval($a['width']) : 100; 
		$h=(isset($a['height']) && $a['height']) ? intval($a['height']): 100; 			
//в качестве имени файла (аватара) испоьзуем ID пользователя
		$dest=$path.$a['user_id'].'.jpg'; 
		$out=array();
		if(is_numeric($field_id)) $field_id='uniqueID'.$field_id;
		if($field_id){ 
		  if(!isset($_FILES['jform']['tmp_name']['hkm_profile'][$field_id])) return false;
		  if(sys__image_resize($_FILES['jform']['tmp_name']['hkm_profile'][$field_id], $_SERVER['DOCUMENT_ROOT'].$dest, $w, $h, true)) $out[$field_id]=$dest;			  			  	
			  
		}else{			  
		  foreach($_FILES['jform']['tmp_name']['hkm_profile'] as $k => $src){
		    if(sys__image_resize($src, $_SERVER['DOCUMENT_ROOT'].$dest, $w, $h, true)) $out[$k]=$dest;
		  }
		}
		return $out;
	  }		  
	  
	  return false;

//Отображаем фото в профиле 		
	}else{			
	  return '

<img class="hkm_avatar" src="'.$a.'?rnd='.rand(99999, 999999).'" border="0" />
';
	}
}
//======	
 
/**
 * @param    JForm    The form to be altered.
 * @param    array    The associated data for the form.
 * @return    boolean
 * @since    1.6
 */
function onContentPrepareForm($form, $data)
{

	// Load user_profile plugin language
	$lang = JFactory::getLanguage();
	$lang->load('plg_user_hkm_profile', JPATH_ADMINISTRATOR);

	if (!($form instanceof JForm)) {
		$this->_subject->setError('JERROR_NOT_A_FORM');
		return false;
	}
	// Check we are manipulating a valid form.
	if (!in_array($form->getName(), array('com_users.profile', 'com_users.registration','com_users.user','com_admin.profile'))) {
		return true;
	}
	if ($form->getName()=='com_users.profile')
	{
		// Add the profile fields to the form.
		//JForm::addFormPath(dirname(__FILE__).'/profiles');
		//$form->loadFile('profile', false);

		$formXMLGen = $this->getUserdataParams();
		$form->load($formXMLGen);

//2v3.su
//======
		$db=&JFactory::getDbo();		
//======

		$userinfo = $this->params->get('userinfo');

		foreach($userinfo->fieldName as $fieldNum=>$fname){

			$fieldReq=is_array($userinfo->fieldRequiredProfile)? 
			$userinfo->fieldRequiredProfile[$fieldNum]: 
			$userinfo->fieldRequiredProfile->$fieldNum;

			if ($fieldReq > 0) {

/*
2v3.su, если поле Аватар является обязательным, а фото уже было загружено, то делаем его необязательным, чтобы не пришлось каждый раз загружать аватар, при редактировании профиля.
*/
//=====					
				if(isset($userinfo->fieldType[$fieldNum]) && $userinfo->fieldType[$fieldNum]=='file' && $fieldReq==2){					  
				  $db->setQuery('SELECT * FROM #__user_profiles WHERE user_id="'.intval($data->id).'" AND profile_key="hkm_profile.'.$fname.'" LIMIT 1'); 
				  $r=$db->loadObjectList('user_id');
				  if(count($r)) $fieldReq=1; 	
				}
//======
				 
				$form->setFieldAttribute($fname, 'required', $fieldReq == 2, 'hkm_profile');
			} else {
				$form->removeField($fname, 'hkm_profile');
			}

		}            
	}

	//In this example, we treat the frontend registration and the back end user create or edit as the same. 
	elseif ($form->getName()=='com_users.registration' || $form->getName()=='com_users.user' )
	{       

		// Add the registration fields to the form.
		//JForm::addFormPath(dirname(__FILE__).'/profiles');
		//$form->loadFile('profile', false);

		$formXMLGen = $this->getUserdataParams();
		$form->load($formXMLGen);


		$userinfo = $this->params->get('userinfo');

		foreach($userinfo->fieldName as $fieldNum=>$fname){

			$fieldReq=is_array($userinfo->fieldRequiredRegistration)? 
			$userinfo->fieldRequiredRegistration[$fieldNum]: 
			$userinfo->fieldRequiredRegistration->$fieldNum;

			if ($fieldReq > 0) {
				$form->setFieldAttribute($fname, 'required', $fieldReq == 2, 'hkm_profile');
			} else {
				$form->removeField($fname, 'hkm_profile');
			}

		}
	}            
}

function getUserdataParams(){
//тут идет код плагина
			switch ($type) {
				case 'multiselect':     
					$fieldParams.=' multiple="true" ';               
				case 'select':
					$type='list';
					break;
				case 'date':
					$type='calendar';
					 break;
//2v3.su, в панели администрирования, вместо поля "файл", отображаем текстовую область 
//=====
				case 'file':
					$type=(stripos(JPATH_BASE, 'administrator')!==false) ? 'input' : 'file';

					 break;
//=====						 
			  
				default:
					# code...
					break;
			}

//тут идет код плагина

	return $html;

}

function onUserAfterSave($data, $isNew, $result, $error)
{		
	$userId    = JArrayHelper::getValue($data, 'id', 0, 'int');

//2v3.su, тут вызываем функцию обработки аватара
//=====
	$ex=array();
	$userinfo=$this->params->get('userinfo');       
	if($userinfo && isset($userinfo->fieldmyparams)){
	  $fieldmyparams=$userinfo->fieldmyparams;		 
	  if(is_array($fieldmyparams) || is_object($fieldmyparams)){
		foreach($fieldmyparams as $k => $params){   			    			
		  if(!trim($params)) continue;
		  parse_str($params, $params);			  
		  if(!is_array($params) || !count($params) || !isset($params['fieldtype']) || !method_exists($this, 'my_'.$params['fieldtype'])) continue;              
		  $method='my_'.$params['fieldtype'];
		  $params['field_id']=$k;
		  $params['user_id']=$userId;
		  if($r=$this->$method($params)){	
			if(is_array($r)){			  			    
			  foreach($r as $k => $v) $data['hkm_profile'][$k]=$v;
			}else $data['hkm_profile'][$k]=$r;
			
		  }else{	 	
//исключаем удаление аватара, на случай редактирования других полей профиля 		  
			$ex[]='profile_key != "hkm_profile.uniqueID'.$k.'"';
		  }
		}
	  }
	}
//======        

	if ($userId && $result && isset($data['hkm_profile']) && (count($data['hkm_profile'])))
	{
		try
		{
			$db = &JFactory::getDbo();
//2v3.su
//======
			$sql='DELETE FROM #__user_profiles WHERE user_id = '.$userId.' AND profile_key LIKE \'hkm_profile.%\'';				
			if(count($ex)) $sql.=' AND ('.implode(' AND ', $ex).')';
			$db->setQuery($sql);
//======				
			if (!$db->query()) {
				throw new Exception($db->getErrorMsg());
			}

			$tuples = array();
			$order    = 1;

			foreach ($data['hkm_profile'] as $k => $v) {
				$v = (is_array($v))? implode("\n", $v) : $v;
				$tuples[] = '('.$userId.', '.$db->quote('hkm_profile.'.$k).', '.$db->quote($v).', '.$order++.')';
			}

//2v3.su, заменить INSERT на REPLACE
//======
			$db->setQuery('REPLACE INTO #__user_profiles VALUES '.implode(', ', $tuples));
//======
			if (!$db->query()) {
				throw new Exception($db->getErrorMsg());
			}
		}
		catch (JException $e) {
			$this->_subject->setError($e->getMessage());
			return false;
		}
	}

	return true;
}

case 'hkm_profile':
	$db->setQuery('SELECT extension_id, params FROM #__extensions WHERE name="plg_user_hkm_profile" LIMIT 1');
	$a=$db->loadObjectList('extension_id');
	if(!is_array($a)) break;				
	$a=array_shift($a);	
	$a=json_decode($a->params);
	$userinfo=$a->userinfo;	
	if(!isset($userinfo->fieldmyparams) || !is_array($userinfo->fieldmyparams)) break;

	$ids=$avatars=array();
	foreach($userinfo->fieldmyparams as $k => $params){
	  parse_str($params, $params);	
	  if(isset($params['fieldtype']) && $params['fieldtype']=='avatar')
		$ids[]='profile_key="hkm_profile.uniqueID'.$k.'"';	
	}
	
	if(!count($ids)) break;
	
	if(count($users)) {
	  $db->setQuery('SELECT * FROM #__user_profiles WHERE user_id in (' . implode(',', $users) . ') AND ('.implode(' OR ', $ids).')');
	   $avatars=$db->loadObjectList('user_id');
	}

	foreach ($comments as &$comment) {
	  $uid = (int)$comment->userid;
	  if(!isset($avatars[$uid])) continue;
	  if(@is_file($_SERVER['DOCUMENT_ROOT'].'/'.ltrim($avatars[$uid]->profile_value, '/\\'))) $comment->avatar=$avatars[$uid]->profile_value;
	}
	
	break;