当我运行一个组件时，我得到 500 - 在joomla中读取db 时发生错误。
我的配置文件很完美。
我不知道还有什么可以改变......
任何指导都会有所帮助
提前致谢...
//No direct acesss
defined('_JEXEC') or die();
jimport('joomla.application.component.model');
class DealsModelDeals extends JModel {
function getDeals(){
$db = $this->getDBO();
$db->setQuery('SELECT * from #__todaysdeal');
$deals = $db->loadObjectList();
if ($deals === null)
JError::raiseError(500, 'Error reading db');
return $deals;
}
function getDeal($id){
$query = ' SELECT * FROM #__todaysdeal '. ' WHERE id = '.$id;
$db = $this->getDBO();
$db->setQuery($query);
$deal = $db->loadObject();
if ($deal === null)
JError::raiseError(500, 'Deal with ID: '.$id.' not found.');
else
return $deal;
}
/**
* Method that returns an empty greeting with id 0
*
* @access public
*/
function getNewDeal(){
$dealTableRow =& $this->getTable('deals');
$dealTableRow->id=0;
$dealTableRow->clientName='';
return $dealTableRow;
}
/**
* Method to store a greeting in the DB
*
* @access public
*/
function saveDeal($deal)
{
//Parameter not necessary because our model is named DealsModelDeals (used to ilustrate that you can specify an alternative name to the JTable extending class)
$dealTableRow =& $this->getTable('deals');
//print_r($dealTableRow);
//print_r($_FILES); exit;
// Bind the form fields to the todaysdeal table
if (!$dealTableRow->bind($deal)) {
JError::raiseError(500, 'Error binding data');
}
// Make sure the deal record is valid
if (!$dealTableRow->check()) {
JError::raiseError(500, 'Invalid data');
}
// Insert/update this record in the db
if (!$dealTableRow->store()) {
$errorMessage = $dealTableRow->getError();
JError::raiseError(500, 'Error binding data: '.$errorMessage);
}
$id = $dealTableRow->id;
if(!empty($_FILES['dealImage']))
{
$file = $_FILES['dealImage'];
$id = $dealTableRow->id;
if ((($_FILES["dealImage"]["type"] == "image/gif") || ($_FILES["dealImage"]["type"] == "image/jpeg") || ($_FILES["dealImage"]["type"] == "image/pjpeg")) && ($_FILES["dealImage"]["size"] < 150000))
{
if ($_FILES["dealImage"]["error"] > 0)
{
echo "Return Code: " . $_FILES["dealImage"]["error"] . "<br />";
}
else
{
if (file_exists("components/com_deals/dealImages/" . $_FILES["dealImage"]["name"])) {
$_FILES["dealImage"]["name"] . " already exists. ";
} else {
move_uploaded_file($_FILES["dealImage"]["tmp_name"], "components/com_deals/dealImages/" .$id."_".$_FILES["dealImage"]["name"]);
echo "Stored in: " . "dealImages/" . $_FILES["dealImage"]["name"];
}
}
}
else
{
}
}
$dealImage = $_FILES['dealImage']['name'];
$dealImage .= (!empty($_FILES['dealImage']['name'])) ? ' ' . $_FILES['dealImage']['name'] : '';
$query = "UPDATE #__todaysdeal SET dealImage='".$id."_".$_FILES['dealImage']['name']."' WHERE id='".$id."'";
$db = $this->getDBO();
$db->setQuery($query);
$db->query();
//If we get here and with no raiseErrors, then everythign went well
}
function deleteDeals($arrayIDs)
{
$query = "DELETE FROM #__todaysdeal WHERE id IN (".implode(',', $arrayIDs).")";
$db = $this->getDBO();
$db->setQuery($query);
if (!$db->query()){
$errorMessage = $this->getDBO()->getErrorMsg();
JError::raiseError(500, 'Error deleting Deals: '.$errorMessage);
}
}
function dealsUploadPhoto($file, $id)
{
//UPLOAD FILE
$config = & JComponentHelper::getParams('com_deals');
$allowed = array('image/pjpeg', 'image/jpeg', 'image/jpg', 'image/png', 'image/x-png', 'image/gif', 'image/ico', 'image/x-icon');
$pwidth = $config->get('pwidth');
$pheight = $config->get('pheight');
$maxsize = $config->get('maxsize');
if($file['size'] > 0 && ($file['size'] / 1024 < $maxsize)){
if(!file_exists(JPATH_SITE . DS. 'images' . DS . 'deals'))
{
if(mkdir(JPATH_SITE . DS . 'images' . DS . 'deals')) {
JPath::setPermissions(JPATH_SITE . DS . 'images' . DS . 'deals', '0777');
if(file_exists(JPATH_SITE . DS . 'images' . DS . 'index.html')) {
copy(JPATH_SITE . DS . 'images' . DS . 'index.html', JPATH_SITE . DS . 'images' . DS . 'deals/index.html');
}
}
}
if($file['error'] != 0){
tpJobsMsgAlert('Upload file photo error.');
exit ();
}
if($file['size'] == 0){
$file = null;
}
if(!in_array($file['type'], $allowed)) {
$file = null;
}
if ($file != null){
$dest = JPATH_SITE.DS.'images'.DS.'deals'.DS.$id.'.jpg';
if(file_exists($dest))
{
$del = unlink($dest);
}
$soure = $file['tmp_name'];
jimport('joomla.filesystem.file');
$uploaded = JFile::upload($soure,$dest);
$fileAtr = getimagesize($dest);
$widthOri = $fileAtr[0];
$heightOri = $fileAtr[1];
$type = $fileAtr['mime'];
$img = false;
switch ($type)
{
case 'image/jpeg':
case 'image/jpg':
case 'image/pjpeg':
$img = imagecreatefromjpeg($dest);
break;
case 'image/ico':
$img = imagecreatefromico($dest);
break;
case 'image/x-png':
case 'image/png':
$img = imagecreatefrompng($dest);
break;
case 'image/gif':
$img = imagecreatefromgif($dest);
break;
}
if(!$img)
{
return false;
}
$curr = @getimagesize($dest);
$perc_w = $pwidth / $widthOri;
$perc_h = $pheight / $heightOri;
if(($widthOri<$pwidth) && ($heightOri<$height))
{
return;
}
if($perc_h > $perc_w)
{
$pwidth = $pwidth;
$pheight = round($heightOri * $perc_w);
}
else
{
$pheight = $pheight;
$pwidth = round($widthOri * $perc_h);
}
$nwimg = imagecreatetruecolor($pwidth, $pheight);
imagecopyresampled($nwimg, $img, 0, 0, 0, 0, $pwidth, $pheight, $widthOri, $heightOri);
imagejpeg($nwimg, $dest, 100);
imagedestroy($nwimg);
imagedestroy($img);
}
}else{
if($file['size'] / 1024 > $maxsize){
dealsMsgAlert('Size of file photo is too big. Maximum size".$maxsize." KB');
exit ();
}
}
}
function dealsMsgAlert($msg)
{
if (!headers_sent())
{
while(@ob_end_clean());
ob_start();
echo "<script> alert('".$msg."'); window.history.go(-1); </script>\n";
$out = ob_get_contents();
ob_end_clean();
echo $out;
exit();
}
echo "<script> alert('".$msg."'); window.history.go(-1); </script>\n";
exit();
}
} ？＆GT;
答案 0 :(得分：0)
导致红屏出现500错误的问题正在发生，因为如果请求的引用不存在则引发异常。您不应该使用JError::raiseError()。
请改用以下其中一项：
// This will set error to the model. You can get the errors from
// the model by your controller $model->getErrors() and output them to the screen.
$this->setError('ERROR MESSAGE GOES HERE');
OR
// This will output errors to the screen right the way
JFactory::getApplication()->enqueueMessage('ERROR MESSAGE GOES HERE', 'message');
模型已经具有_db属性，您不需要将db变为变量。您可以像$this->_db一样访问它。您可以阅读Joomla Model class here。
同样在您的模型中，您正在使用
$db = $this->getDBO();
$db->setQuery('SELECT * from #__todaysdeal');
$deals = $db->loadObjectList();
模型有加载对象列表的简化方法，如此
$deals =& $this->_getList('SELECT * from #__todaysdeal');