/**
* This abstract function performs the processing of the user request.
* @param User $user The requesting user. If the user is not null, then by convention
* actions will assume the user is authenticated, otherwise not.
* @throws Exception If an error was encountered while processing this request, an exception
* will be thrown.
* @return void
*/
public function processRequest(User $user = NULL)
{
// if image id was specified, parse it, attempt to load an image data object using the id
$imageId = RequestParser::parseRequestParam($_REQUEST, EditImageAction::GET_PARAM_IMAGE_ID, RequestParser::PARAM_FILTER_TYPE_INT);
$imageData = NULL;
if ($imageId != NULL) {
$imageData = ImageData::loadImageDataById(DbConnectionUtil::getDbConnection(), $imageId);
}
// otherwise create a new image data object
if ($imageData == NULL) {
$imageData = new ImageData();
$imageData->setSubmitterUserId($user->getId());
}
// set the fields in the image data object
$author = NULL;
if (isset($_POST['author'])) {
$author = $_POST['author'];
}
if ($author != NULL) {
$imageData->setAuthor($author);
}
$title = NULL;
if (isset($_POST['title'])) {
$title = $_POST['title'];
}
if ($title != NULL) {
$imageData->setTitle($title);
}
$year = NULL;
if (isset($_POST['year'])) {
$year = $_POST['year'];
}
if ($year != NULL) {
$imageData->setYear($year);
}
// update attributes list
$attributeString = $_POST[EditImageAction::POST_PARAM_ATTRIBUTE_LIST];
if (!empty($attributeString)) {
$attributeStringList = explode(",", $attributeString);
} else {
$attributeStringList = array();
}
// add new attributes
foreach ($attributeStringList as $attString) {
if ($attString != "") {
if (!$imageData->hasAttribute($attString)) {
$imageData->addAttributeByString($attString);
}
}
}
$dbConnection = DbConnectionUtil::getDbConnection();
// remove deleted ones
$attributeList = $imageData->getAttributeList();
foreach ($attributeList as $attribute) {
if (!in_array($attribute->getAttribute(), $attributeStringList)) {
$imageData->removeAttributeBystring($attribute->getAttribute());
$attribute->delete($dbConnection);
}
}
// save the image data object
$imageData->save($dbConnection);
// if image data was uploaded, process the image uploads and save again
if (!empty($_FILES[EditImageAction::POST_PARAM_THUMBNAIL]['name'])) {
$thumbnailUri = $this->processImageUpload('image_data_thumbs', $imageData->getId(), EditImageAction::POST_PARAM_THUMBNAIL);
$imageData->setThumbnailUri($thumbnailUri);
$imageData->save($dbConnection);
}
if (!empty($_FILES[EditImageAction::POST_PARAM_FILE]['name'])) {
$fileUri = $this->processImageUpload('image_data', $imageData->getId(), EditImageAction::POST_PARAM_FILE);
$imageData->setContentUri($fileUri);
$imageData->save($dbConnection);
}
// redirect the user to the image viewing page
$getParamMap = array(ImageDetailsView::GET_PARAM_IMAGE_ID => $imageData->getId());
$imageDetailsViewUrl = UrlFormatter::formatRoutingItemUrl('views/ImageDetailsView', $getParamMap);
header("Location: {$imageDetailsViewUrl}");
}
/**
* This is a private helper function for populating an ImageData obejct given
* the specified DB result row.
* @param int $imageId The DB id of the image being populated.
* @param array $resultRow The DB query result row this function will consume data from.
* @return ImageData A populated image data object.
*/
private static function populateImageDataByDbResultRow(array $resultRow, PDO $dbConnection)
{
$imageData = new ImageData($resultRow['id']);
$imageData->setContentUri($resultRow['content_uri']);
$imageData->setSubmitterUserId($resultRow['submitter_user_id']);
$imageData->setThumbnailUri($resultRow['thumbnail_uri']);
$imageData->setAuthor($resultRow['author']);
$imageData->setTitle($resultRow['title']);
$imageData->setYear($resultRow['year']);
$imageData->setAttributeList(ImageAttribute::loadImageAttributeListByImageDataId($dbConnection, $imageData->getId()));
return $imageData;
}