silverstripe-dms/code/cms/DMSUploadField.php

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<?php
/**
* Field for uploading files into a DMSDocument. Replacing the existing file.
* Not ideally suited for the purpose, as the base implementation
* assumes to operate on a {@link File} record. We only use this as
* a temporary container, which gets deleted as soon as the actual
* {@link DMSDocument} is created.
*
* <b>NOTE: this Field will call write() on the supplied record</b>
*
* @author Julian Seidenberg
* @package dms
*/
class DMSUploadField extends UploadField {
private static $allowed_actions = array (
"upload",
);
protected $folderName = 'DMSTemporaryUploads';
public function __construct($name, $title = null, SS_List $items = null) {
parent::__construct($name, $title, $items);
//set default DMS replace template to false
$this->setConfig('useDMSReplaceTemplate', 0);
}
/**
* Override the default behaviour of the UploadField and take the uploaded file (uploaded to assets) and
* add it into the DMS storage, deleting the old/uploaded file.
* @param File
*/
protected function attachFile($file) {
$dms = DMS::inst();
$record = $this->getRecord();
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if($record instanceof DMSDocument) {
// If the edited record is a document,
// assume we're replacing an existing file
$doc = $record;
$doc->ingestFile($file);
} else {
// Otherwise create it
$doc = $dms->storeDocument($file);
$file->delete();
// Relate to the underlying page being edited.
// Not applicable when editing the document itself and replacing it.
$doc->addPage($record);
}
return $doc;
}
public function validate($validator) {
return true;
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}
public function isDisabled() {
return (parent::isDisabled() || !$this->isSaveable());
}
public function isSaveable() {
return (!empty($this->getRecord()->ID));
}
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/**
* 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 = $this->upload->getFile();
// CUSTOM Attach the file to the related record.
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$document = $this->attachFile($file);
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// Collect all output data.
$return = array_merge($return, array(
'id' => $document->ID,
'name' => $document->getTitle(),
'thumbnail_url' => $document->Icon($document->getExtension()),
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'edit_url' => $this->getItemHandler($document->ID)->EditLink(),
'size' => $document->getFileSizeFormatted(),
'buttons' => (string) $document->renderWith($this->getTemplateFileButtons()),
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'showeditform' => true
));
// CUSTOM END
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}
}
}
$response = new SS_HTTPResponse(Convert::raw2json(array($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 only when access the upload field through a GridField.
// Needs to be enabled through setConfig('downloadTemplateName', 'ss-dmsuploadfield-downloadtemplate');
Requirements::javascript('dms/javascript/DMSUploadField_downloadtemplate.js');
// In the add dialog, add the addtemplate into the set of file that load.
Requirements::javascript('dms/javascript/DMSUploadField_addtemplate.js');
return $fields;
}
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/**
* @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);
}
}