public function display($tpl = null)
{
$eventName = 'onBefore' . ucfirst($this->doTask);
$this->triggerEvent($eventName, array($tpl));
// Load the model
/** @var DataModel $model */
$model = $this->getModel();
$items = $model->get();
$this->items = $items;
$platform = $this->container->platform;
$document = $platform->getDocument();
if ($document instanceof \JDocument) {
$document->setMimeEncoding('text/csv');
}
$platform->setHeader('Pragma', 'public');
$platform->setHeader('Expires', '0');
$platform->setHeader('Cache-Control', 'must-revalidate, post-check=0, pre-check=0');
$platform->setHeader('Cache-Control', 'public', false);
$platform->setHeader('Content-Description', 'File Transfer');
$platform->setHeader('Content-Disposition', 'attachment; filename="' . $this->csvFilename . '"');
if (is_null($tpl)) {
$tpl = 'csv';
}
$hasFailed = false;
try {
$result = $this->loadTemplate($tpl, true);
if ($result instanceof \Exception) {
$hasFailed = true;
}
} catch (\Exception $e) {
$hasFailed = true;
}
if (!$hasFailed) {
echo $result;
} else {
// Default CSV behaviour in case the template isn't there!
if (count($items) === 0) {
throw new AccessForbidden();
}
$item = $items->last();
$keys = $item->getData();
$keys = array_keys($keys);
reset($items);
if (!empty($this->csvFields)) {
$temp = array();
foreach ($this->csvFields as $f) {
$exist = false;
// If we have a dot and it isn't part of the field name, we are dealing with relations
if (!$model->hasField($f) && strpos($f, '.')) {
$methods = explode('.', $f);
$object = $item;
// Let's see if the relation exists
foreach ($methods as $method) {
if (isset($object->{$method})) {
$exist = true;
$object = $object->{$method};
} else {
$exist = false;
break;
}
}
}
if (in_array($f, $keys)) {
$temp[] = $f;
} elseif ($exist) {
$temp[] = $f;
}
}
$keys = $temp;
}
if ($this->csvHeader) {
$csv = array();
foreach ($keys as $k) {
$k = str_replace('"', '""', $k);
$k = str_replace("\r", '\\r', $k);
$k = str_replace("\n", '\\n', $k);
$k = '"' . $k . '"';
$csv[] = $k;
}
echo implode(",", $csv) . "\r\n";
}
foreach ($items as $item) {
$csv = array();
foreach ($keys as $k) {
// If our key contains a dot and it isn't part of the field name, we are dealing with relations
if (!$model->hasField($k) && strpos($k, '.')) {
$methods = explode('.', $k);
$v = $item;
foreach ($methods as $method) {
$v = $v->{$method};
}
} else {
$v = $item->{$k};
}
if (is_array($v)) {
$v = 'Array';
} elseif (is_object($v)) {
$v = 'Object';
}
$v = str_replace('"', '""', $v);
$v = str_replace("\r", '\\r', $v);
$v = str_replace("\n", '\\n', $v);
$v = '"' . $v . '"';
$csv[] = $v;
}
echo implode(",", $csv) . "\r\n";
}
}
$eventName = 'onAfter' . ucfirst($this->doTask);
$this->triggerEvent($eventName, array($tpl));
return true;
}
