silverstripe-dms/code/cms/DMSUploadField.php
2012-08-01 17:59:41 +12:00

167 lines
4.9 KiB
PHP

<?php
/**
* Field for uploading files into a DMSDocument. Replacing the existing file.
*
* <b>NOTE: this Field will call write() on the supplied record</b>
*
* <b>Features (some might not be available to old browsers):</b>
*
*
* @author Julian Seidenberg
* @package dms
*/
class DMSUploadField extends UploadField {
protected $folderName = 'DMSTemporaryUploads';
/**
* Override the default behaviour of the UploadField and take the uploaded file (uploaded to assets) and
* add it into the DMS storage, deleting the old/uploaded file.
* @param File
*/
protected function attachFile($file) {
$page = $this->getRecord();
$dms = DMS::getDMSInstance();
$document = $dms->storeDocument($file);
$file->delete();
$document->addPage($page);
return $document;
}
/**
* Action to handle upload of a single file
*
* @param SS_HTTPRequest $request
* @return string json
*/
public function upload(SS_HTTPRequest $request) {
if($this->isDisabled() || $this->isReadonly()) return $this->httpError(403);
// Protect against CSRF on destructive action
$token = $this->getForm()->getSecurityToken();
if(!$token->checkRequest($request)) return $this->httpError(400);
$name = $this->getName();
$tmpfile = $request->postVar($name);
$record = $this->getRecord();
// Check if the file has been uploaded into the temporary storage.
if (!$tmpfile) {
$return = array('error' => _t('UploadField.FIELDNOTSET', 'File information not found'));
} else {
$return = array(
'name' => $tmpfile['name'],
'size' => $tmpfile['size'],
'type' => $tmpfile['type'],
'error' => $tmpfile['error']
);
}
// Check for constraints on the record to which the file will be attached.
if (!$return['error'] && $this->relationAutoSetting && $record && $record->exists()) {
$tooManyFiles = false;
// Some relationships allow many files to be attached.
if ($this->getConfig('allowedMaxFileNumber') && ($record->has_many($name) || $record->many_many($name))) {
if(!$record->isInDB()) $record->write();
$tooManyFiles = $record->{$name}()->count() >= $this->getConfig('allowedMaxFileNumber');
// has_one only allows one file at any given time.
} elseif($record->has_one($name)) {
$tooManyFiles = $record->{$name}() && $record->{$name}()->exists();
}
// Report the constraint violation.
if ($tooManyFiles) {
if(!$this->getConfig('allowedMaxFileNumber')) $this->setConfig('allowedMaxFileNumber', 1);
$return['error'] = _t(
'UploadField.MAXNUMBEROFFILES',
'Max number of {count} file(s) exceeded.',
array('count' => $this->getConfig('allowedMaxFileNumber'))
);
}
}
// Process the uploaded file
if (!$return['error']) {
$fileObject = null;
if ($this->relationAutoSetting) {
// Search for relations that can hold the uploaded files.
if ($relationClass = $this->getRelationAutosetClass()) {
// Create new object explicitly. Otherwise rely on Upload::load to choose the class.
$fileObject = Object::create($relationClass);
}
}
// Get the uploaded file into a new file object.
try {
$this->upload->loadIntoFile($tmpfile, $fileObject, $this->folderName);
} catch (Exception $e) {
// we shouldn't get an error here, but just in case
$return['error'] = $e->getMessage();
}
if (!$return['error']) {
if ($this->upload->isError()) {
$return['error'] = implode(' '.PHP_EOL, $this->upload->getErrors());
} else {
$file = $this->upload->getFile();
// Attach the file to the related record.
$document = $this->attachFile($file);
// Collect all output data.
$return = array_merge($return, array(
'id' => $document->ID,
'name' => $document->getTitle(),
'thumbnail_url' => $document->UploadFieldThumbnailURL,
'edit_url' => $this->getItemHandler($document->ID)->EditLink(),
'size' => $document->getFileSizeFormatted(),
'buttons' => $document->UploadFieldFileButtons,
'showeditform' => true
));
}
}
}
$response = new SS_HTTPResponse(Convert::raw2json(array($return)));
$response->addHeader('Content-Type', 'text/plain');
return $response;
}
/**
* Never directly display items uploaded
* @return SS_List
*/
public function getItems() {
return new ArrayList();
}
public function Field($properties = array()) {
$fields = parent::Field($properties);
//replace the download template with a new one
Requirements::block(FRAMEWORK_DIR . '/javascript/UploadField_downloadtemplate.js');
Requirements::javascript('dms/javascript/DMSUploadField_downloadtemplate.js');
return $fields;
}
/**
* @param int $itemID
* @return UploadField_ItemHandler
*/
public function getItemHandler($itemID) {
return DMSUploadField_ItemHandler::create($this, $itemID);
}
}
class DMSUploadField_ItemHandler extends UploadField_ItemHandler {
function getItem() {
return DataObject::get_by_id('DMSDocument', $this->itemID);
}
}