silverstripe-framework/forms/UploadField.php

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<?php
use SilverStripe\Filesystem\Storage\AssetContainer;
/**
* Field for uploading single or multiple files of all types, including images.
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*
* <b>Features (some might not be available to old browsers):</b>
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*
* - File Drag&Drop support
* - Progressbar
* - Image thumbnail/file icons even before upload finished
* - Saving into relations on form submit
* - Edit file
* - allowedExtensions is by default File::$allowed_extensions<li>maxFileSize the value of min(upload_max_filesize,
* post_max_size) from php.ini
*
* <>Usage</b>
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*
* @example <code>
* $UploadField = new UploadField('AttachedImages', 'Please upload some images <span>(max. 5 files)</span>');
* $UploadField->setAllowedFileCategories('image');
* $UploadField->setAllowedMaxFileNumber(5);
* </code>
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*
* @author Zauberfisch
* @package forms
* @subpackages fields-files
*/
class UploadField extends FileField {
/**
* @var array
*/
private static $allowed_actions = array(
'upload',
'attach',
'handleItem',
'handleSelect',
'fileexists'
);
/**
* @var array
*/
private static $url_handlers = array(
'item/$ID' => 'handleItem',
'select' => 'handleSelect',
'$Action!' => '$Action',
);
/**
* Template to use for the file button widget
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*
* @var string
*/
protected $templateFileButtons = 'UploadField_FileButtons';
/**
* Template to use for the edit form
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*
* @var string
*/
protected $templateFileEdit = 'UploadField_FileEdit';
/**
* Parent data record. Will be infered from parent form or controller if blank.
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*
* @var DataObject
*/
protected $record;
/**
* Items loaded into this field. May be a RelationList, or any other SS_List
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*
* @var SS_List
*/
protected $items;
/**
* Config for this field used in the front-end javascript
* (will be merged into the config of the javascript file upload plugin).
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*
* @var array
*/
protected $ufConfig = array();
/**
* Front end config defaults
*
* @config
* @var array
*/
private static $defaultConfig = array(
/**
* Automatically upload the file once selected
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*
* @var boolean
*/
'autoUpload' => true,
/**
* Restriction on number of files that may be set for this field. Set to null to allow
* unlimited. If record has a has_one and allowedMaxFileNumber is null, it will be set to 1.
* The resulting value will be set to maxNumberOfFiles
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*
* @var integer
*/
'allowedMaxFileNumber' => null,
/**
* Can the user upload new files, or just select from existing files.
* String values are interpreted as permission codes.
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*
* @var boolean|string
*/
'canUpload' => true,
/**
* Can the user attach files from the assets archive on the site?
* String values are interpreted as permission codes.
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*
* @var boolean|string
*/
'canAttachExisting' => "CMS_ACCESS_AssetAdmin",
/**
* Shows the target folder for new uploads in the field UI.
* Disable to keep the internal filesystem structure hidden from users.
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*
* @var boolean|string
*/
'canPreviewFolder' => true,
/**
* Indicate a change event to the containing form if an upload
* or file edit/delete was performed.
*
* @var boolean
*/
'changeDetection' => true,
/**
* Maximum width of the preview thumbnail
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*
* @var integer
*/
'previewMaxWidth' => 80,
/**
* Maximum height of the preview thumbnail
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*
* @var integer
*/
'previewMaxHeight' => 60,
/**
* javascript template used to display uploading files
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*
* @see javascript/UploadField_uploadtemplate.js
* @var string
*/
'uploadTemplateName' => 'ss-uploadfield-uploadtemplate',
/**
* javascript template used to display already uploaded files
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*
* @see javascript/UploadField_downloadtemplate.js
* @var string
*/
'downloadTemplateName' => 'ss-uploadfield-downloadtemplate',
/**
* Show a warning when overwriting a file.
* This requires Upload->replaceFile config to be set to true, otherwise
* files will be renamed instead of overwritten
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*
* @see Upload
* @var boolean
*/
'overwriteWarning' => true
);
/**
* @var String Folder to display in "Select files" list.
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* Defaults to listing all files regardless of folder.
* The folder path should be relative to the webroot.
* See {@link FileField->folderName} to set the upload target instead.
* @example admin/folder/subfolder
*/
protected $displayFolderName;
/**
* FieldList $fields or string $name (of a method on File to provide a fields) for the EditForm
* @example 'getCMSFields'
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*
* @var FieldList|string
*/
protected $fileEditFields = null;
/**
* FieldList $actions or string $name (of a method on File to provide a actions) for the EditForm
* @example 'getCMSActions'
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*
* @var FieldList|string
*/
protected $fileEditActions = null;
/**
* Validator (eg RequiredFields) or string $name (of a method on File to provide a Validator) for the EditForm
* @example 'getCMSValidator'
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*
* @var RequiredFields|string
*/
protected $fileEditValidator = null;
/**
* Construct a new UploadField instance
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*
* @param string $name The internal field name, passed to forms.
* @param string $title The field label.
* @param SS_List $items If no items are defined, the field will try to auto-detect an existing relation on
* @link $record}, with the same name as the field name.
* @param Form $form Reference to the container form
*/
public function __construct($name, $title = null, SS_List $items = null) {
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// TODO thats the first thing that came to my head, feel free to change it
$this->addExtraClass('ss-upload'); // class, used by js
$this->addExtraClass('ss-uploadfield'); // class, used by css for uploadfield only
$this->ufConfig = self::config()->defaultConfig;
parent::__construct($name, $title);
if($items) $this->setItems($items);
// filter out '' since this would be a regex problem on JS end
$this->getValidator()->setAllowedExtensions(
array_filter(Config::inst()->get('File', 'allowed_extensions'))
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);
// get the lower max size
$maxUpload = File::ini2bytes(ini_get('upload_max_filesize'));
$maxPost = File::ini2bytes(ini_get('post_max_size'));
$this->getValidator()->setAllowedMaxFileSize(min($maxUpload, $maxPost));
}
/**
* Set name of template used for Buttons on each file (replace, edit, remove, delete) (without path or extension)
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*
* @param string
*/
public function setTemplateFileButtons($template) {
$this->templateFileButtons = $template;
return $this;
}
/**
* @return string
*/
public function getTemplateFileButtons() {
return $this->templateFileButtons;
}
/**
* Set name of template used for the edit (inline & popup) of a file file (without path or extension)
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*
* @param string
*/
public function setTemplateFileEdit($template) {
$this->templateFileEdit = $template;
return $this;
}
/**
* @return string
*/
public function getTemplateFileEdit() {
return $this->templateFileEdit;
}
/**
* Determine if the target folder for new uploads in is visible the field UI.
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*
* @return boolean
*/
public function canPreviewFolder() {
if(!$this->isActive()) return false;
$can = $this->getConfig('canPreviewFolder');
return (is_bool($can)) ? $can : Permission::check($can);
}
/**
* Determine if the target folder for new uploads in is visible the field UI.
* Disable to keep the internal filesystem structure hidden from users.
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*
* @param boolean|string $canPreviewFolder Either a boolean flag, or a
* required permission code
* @return UploadField Self reference
*/
public function setCanPreviewFolder($canPreviewFolder) {
return $this->setConfig('canPreviewFolder', $canPreviewFolder);
}
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/**
* Determine if the field should show a warning when overwriting a file.
* This requires Upload->replaceFile config to be set to true, otherwise
* files will be renamed instead of overwritten (although the warning will
* still be displayed)
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*
* @return boolean
*/
public function getOverwriteWarning() {
return $this->getConfig('overwriteWarning');
}
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/**
* Determine if the field should show a warning when overwriting a file.
* This requires Upload->replaceFile config to be set to true, otherwise
* files will be renamed instead of overwritten (although the warning will
* still be displayed)
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*
* @param boolean $overwriteWarning
* @return UploadField Self reference
*/
public function setOverwriteWarning($overwriteWarning) {
return $this->setConfig('overwriteWarning', $overwriteWarning);
}
/**
* @param String
*/
public function setDisplayFolderName($name) {
$this->displayFolderName = $name;
return $this;
}
/**
* @return String
*/
public function getDisplayFolderName() {
return $this->displayFolderName;
}
/**
* Force a record to be used as "Parent" for uploaded Files (eg a Page with a has_one to File)
* @param DataObject $record
*/
public function setRecord($record) {
$this->record = $record;
return $this;
}
/**
* Get the record to use as "Parent" for uploaded Files (eg a Page with a has_one to File) If none is set, it will
* use Form->getRecord() or Form->Controller()->data()
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*
* @return DataObject
*/
public function getRecord() {
if (!$this->record && $this->form) {
if (($record = $this->form->getRecord()) && ($record instanceof DataObject)) {
$this->record = $record;
} elseif (($controller = $this->form->Controller())
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&& $controller->hasMethod('data')
&& ($record = $controller->data())
&& ($record instanceof DataObject)
) {
$this->record = $record;
}
}
return $this->record;
}
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/**
* Loads the related record values into this field. UploadField can be uploaded
* in one of three ways:
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*
* - By passing in a list of file IDs in the $value parameter (an array with a single
* key 'Files', with the value being the actual array of IDs).
* - By passing in an explicit list of File objects in the $record parameter, and
* leaving $value blank.
* - By passing in a dataobject in the $record parameter, from which file objects
* will be extracting using the field name as the relation field.
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*
* Each of these methods will update both the items (list of File objects) and the
* field value (list of file ID values).
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*
* @param array $value Array of submitted form data, if submitting from a form
* @param array|DataObject|SS_List $record Full source record, either as a DataObject,
* SS_List of items, or an array of submitted form data
* @return $this Self reference
*/
public function setValue($value, $record = null) {
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// If we're not passed a value directly, we can attempt to infer the field
// value from the second parameter by inspecting its relations
$items = new ArrayList();
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// Determine format of presented data
if(empty($value) && $record) {
// If a record is given as a second parameter, but no submitted values,
// then we should inspect this instead for the form values
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if(($record instanceof DataObject) && $record->hasMethod($this->getName())) {
// If given a dataobject use reflection to extract details
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$data = $record->{$this->getName()}();
if($data instanceof DataObject) {
// If has_one, add sole item to default list
$items->push($data);
} elseif($data instanceof SS_List) {
// For many_many and has_many relations we can use the relation list directly
$items = $data;
}
} elseif($record instanceof SS_List) {
// If directly passing a list then save the items directly
$items = $record;
}
} elseif(!empty($value['Files'])) {
// If value is given as an array (such as a posted form), extract File IDs from this
$class = $this->getRelationAutosetClass();
$items = DataObject::get($class)->byIDs($value['Files']);
}
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// If javascript is disabled, direct file upload (non-html5 style) can
// trigger a single or multiple file submission. Note that this may be
// included in addition to re-submitted File IDs as above, so these
// should be added to the list instead of operated on independently.
if($uploadedFiles = $this->extractUploadedFileData($value)) {
foreach($uploadedFiles as $tempFile) {
$file = $this->saveTemporaryFile($tempFile, $error);
if($file) {
$items->add($file);
} else {
throw new ValidationException($error);
}
}
}
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// Filter items by what's allowed to be viewed
$filteredItems = new ArrayList();
$fileIDs = array();
foreach($items as $file) {
if($file->exists() && $file->canView()) {
$filteredItems->push($file);
$fileIDs[] = $file->ID;
}
}
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// Filter and cache updated item list
$this->items = $filteredItems;
// Same format as posted form values for this field. Also ensures that
// $this->setValue($this->getValue()); is non-destructive
$value = $fileIDs ? array('Files' => $fileIDs) : null;
// Set value using parent
return parent::setValue($value, $record);
}
/**
* Sets the items assigned to this field as an SS_List of File objects.
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* Calling setItems will also update the value of this field, as well as
* updating the internal list of File items.
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*
* @param SS_List $items
* @return UploadField self reference
*/
public function setItems(SS_List $items) {
return $this->setValue(null, $items);
}
/**
* Retrieves the current list of files
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*
* @return SS_List
*/
public function getItems() {
return $this->items ? $this->items : new ArrayList();
}
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/**
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* Retrieves a customised list of all File records to ensure they are
* properly viewable when rendered in the field template.
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*
* @return SS_List[ViewableData_Customised]
*/
public function getCustomisedItems() {
$customised = new ArrayList();
foreach($this->getItems() as $file) {
$customised->push($this->customiseFile($file));
}
return $customised;
}
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/**
* Retrieves the list of selected file IDs
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*
* @return array
*/
public function getItemIDs() {
$value = $this->Value();
return empty($value['Files']) ? array() : $value['Files'];
}
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public function Value() {
// Re-override FileField Value to use data value
return $this->dataValue();
}
public function saveInto(DataObjectInterface $record) {
// Check required relation details are available
$fieldname = $this->getName();
if(!$fieldname) return $this;
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// Get details to save
$idList = $this->getItemIDs();
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// Check type of relation
$relation = $record->hasMethod($fieldname) ? $record->$fieldname() : null;
if($relation && ($relation instanceof RelationList || $relation instanceof UnsavedRelationList)) {
// has_many or many_many
$relation->setByIDList($idList);
} elseif($record->hasOneComponent($fieldname)) {
// has_one
$record->{"{$fieldname}ID"} = $idList ? reset($idList) : 0;
}
return $this;
}
/**
* Customises a file with additional details suitable for rendering in the
* UploadField.ss template
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*
* @param AssetContainer $file
* @return ViewableData_Customised
*/
protected function customiseFile(AssetContainer $file) {
$file = $file->customise(array(
'UploadFieldThumbnailURL' => $this->getThumbnailURLForFile($file),
'UploadFieldDeleteLink' => $this->getItemHandler($file->ID)->DeleteLink(),
'UploadFieldEditLink' => $this->getItemHandler($file->ID)->EditLink(),
'UploadField' => $this
));
// we do this in a second customise to have the access to the previous customisations
return $file->customise(array(
'UploadFieldFileButtons' => (string)$file->renderWith($this->getTemplateFileButtons())
));
}
/**
* Assign a front-end config variable for the upload field
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*
* @see https://github.com/blueimp/jQuery-File-Upload/wiki/Options for the list of front end options available
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*
* @param string $key
* @param mixed $val
* @return UploadField self reference
*/
public function setConfig($key, $val) {
$this->ufConfig[$key] = $val;
return $this;
}
/**
* Gets a front-end config variable for the upload field
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*
* @see https://github.com/blueimp/jQuery-File-Upload/wiki/Options for the list of front end options available
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*
* @param string $key
* @return mixed
*/
public function getConfig($key) {
if(!isset($this->ufConfig[$key])) return null;
return $this->ufConfig[$key];
}
/**
* Determine if the field should automatically upload the file.
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*
* @return boolean
*/
public function getAutoUpload() {
return $this->getConfig('autoUpload');
}
/**
* Determine if the field should automatically upload the file
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*
* @param boolean $autoUpload
* @return UploadField Self reference
*/
public function setAutoUpload($autoUpload) {
return $this->setConfig('autoUpload', $autoUpload);
}
/**
* Determine maximum number of files allowed to be attached
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* Defaults to 1 for has_one and null (unlimited) for
* many_many and has_many relations.
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*
* @return integer|null Maximum limit, or null for no limit
*/
public function getAllowedMaxFileNumber() {
$allowedMaxFileNumber = $this->getConfig('allowedMaxFileNumber');
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// if there is a has_one relation with that name on the record and
// allowedMaxFileNumber has not been set, it's wanted to be 1
if(empty($allowedMaxFileNumber)) {
$record = $this->getRecord();
$name = $this->getName();
if($record && $record->hasOneComponent($name)) {
return 1; // Default for has_one
} else {
return null; // Default for has_many and many_many
}
} else {
return $allowedMaxFileNumber;
}
}
/**
* Determine maximum number of files allowed to be attached.
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*
* @param integer|null $allowedMaxFileNumber Maximum limit. 0 or null will be treated as unlimited
* @return UploadField Self reference
*/
public function setAllowedMaxFileNumber($allowedMaxFileNumber) {
return $this->setConfig('allowedMaxFileNumber', $allowedMaxFileNumber);
}
/**
* Determine if the user has permission to upload.
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*
* @return boolean
*/
public function canUpload() {
if(!$this->isActive()) return false;
$can = $this->getConfig('canUpload');
return (is_bool($can)) ? $can : Permission::check($can);
}
/**
* Specify whether the user can upload files.
* String values will be treated as required permission codes
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*
* @param boolean|string $canUpload Either a boolean flag, or a required
* permission code
* @return UploadField Self reference
*/
public function setCanUpload($canUpload) {
return $this->setConfig('canUpload', $canUpload);
}
/**
* Determine if the user has permission to attach existing files
* By default returns true if the user has the CMS_ACCESS_AssetAdmin permission
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*
* @return boolean
*/
public function canAttachExisting() {
if(!$this->isActive()) return false;
$can = $this->getConfig('canAttachExisting');
return (is_bool($can)) ? $can : Permission::check($can);
}
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/**
* Returns true if the field is neither readonly nor disabled
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*
* @return boolean
*/
public function isActive() {
return !$this->isDisabled() && !$this->isReadonly();
}
/**
* Specify whether the user can attach existing files
* String values will be treated as required permission codes
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*
* @param boolean|string $canAttachExisting Either a boolean flag, or a
* required permission code
* @return UploadField Self reference
*/
public function setCanAttachExisting($canAttachExisting) {
return $this->setConfig('canAttachExisting', $canAttachExisting);
}
/**
* Gets thumbnail width. Defaults to 80
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*
* @return integer
*/
public function getPreviewMaxWidth() {
return $this->getConfig('previewMaxWidth');
}
/**
* @see UploadField::getPreviewMaxWidth()
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*
* @param integer $previewMaxWidth
* @return UploadField Self reference
*/
public function setPreviewMaxWidth($previewMaxWidth) {
return $this->setConfig('previewMaxWidth', $previewMaxWidth);
}
/**
* Gets thumbnail height. Defaults to 60
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*
* @return integer
*/
public function getPreviewMaxHeight() {
return $this->getConfig('previewMaxHeight');
}
/**
* @see UploadField::getPreviewMaxHeight()
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*
* @param integer $previewMaxHeight
* @return UploadField Self reference
*/
public function setPreviewMaxHeight($previewMaxHeight) {
return $this->setConfig('previewMaxHeight', $previewMaxHeight);
}
/**
* javascript template used to display uploading files
* Defaults to 'ss-uploadfield-uploadtemplate'
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*
* @see javascript/UploadField_uploadtemplate.js
* @var string
*/
public function getUploadTemplateName() {
return $this->getConfig('uploadTemplateName');
}
/**
* @see UploadField::getUploadTemplateName()
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*
* @param string $uploadTemplateName
* @return UploadField Self reference
*/
public function setUploadTemplateName($uploadTemplateName) {
return $this->setConfig('uploadTemplateName', $uploadTemplateName);
}
/**
* javascript template used to display already uploaded files
* Defaults to 'ss-downloadfield-downloadtemplate'
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*
* @see javascript/DownloadField_downloadtemplate.js
* @var string
*/
public function getDownloadTemplateName() {
return $this->getConfig('downloadTemplateName');
}
/**
* @see Uploadfield::getDownloadTemplateName()
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*
* @param string $downloadTemplateName
* @return Uploadfield Self reference
*/
public function setDownloadTemplateName($downloadTemplateName) {
return $this->setConfig('downloadTemplateName', $downloadTemplateName);
}
/**
* FieldList $fields for the EditForm
* @example 'getCMSFields'
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*
* @param DataObject $file File context to generate fields for
* @return FieldList List of form fields
*/
public function getFileEditFields(DataObject $file) {
// Empty actions, generate default
if(empty($this->fileEditFields)) {
$fields = $file->getCMSFields();
// Only display main tab, to avoid overly complex interface
if($fields->hasTabSet() && ($mainTab = $fields->findOrMakeTab('Root.Main'))) {
$fields = $mainTab->Fields();
}
return $fields;
}
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// Fields instance
if ($this->fileEditFields instanceof FieldList) {
return $this->fileEditFields;
}
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// Method to call on the given file
if($file->hasMethod($this->fileEditFields)) {
return $file->{$this->fileEditFields}();
}
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user_error("Invalid value for UploadField::fileEditFields", E_USER_ERROR);
}
/**
* FieldList $fields or string $name (of a method on File to provide a fields) for the EditForm
* @example 'getCMSFields'
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*
* @param FieldList|string
* @return Uploadfield Self reference
*/
public function setFileEditFields($fileEditFields) {
$this->fileEditFields = $fileEditFields;
return $this;
}
/**
* FieldList $actions or string $name (of a method on File to provide a actions) for the EditForm
* @example 'getCMSActions'
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*
* @param DataObject $file File context to generate form actions for
* @return FieldList Field list containing FormAction
*/
public function getFileEditActions(DataObject $file) {
// Empty actions, generate default
if(empty($this->fileEditActions)) {
$actions = new FieldList($saveAction = new FormAction('doEdit', _t('UploadField.DOEDIT', 'Save')));
$saveAction->addExtraClass('ss-ui-action-constructive icon-accept');
return $actions;
}
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// Actions instance
if ($this->fileEditActions instanceof FieldList) {
return $this->fileEditActions;
}
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// Method to call on the given file
if($file->hasMethod($this->fileEditActions)) {
return $file->{$this->fileEditActions}();
}
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user_error("Invalid value for UploadField::fileEditActions", E_USER_ERROR);
}
/**
* FieldList $actions or string $name (of a method on File to provide a actions) for the EditForm
* @example 'getCMSActions'
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*
* @param FieldList|string
* @return Uploadfield Self reference
*/
public function setFileEditActions($fileEditActions) {
$this->fileEditActions = $fileEditActions;
return $this;
}
/**
* Determines the validator to use for the edit form
* @example 'getCMSValidator'
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*
* @param DataObject $file File context to generate validator from
* @return Validator Validator object
*/
public function getFileEditValidator(DataObject $file) {
// Empty validator
if(empty($this->fileEditValidator)) {
return null;
}
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// Validator instance
if($this->fileEditValidator instanceof Validator) {
return $this->fileEditValidator;
}
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// Method to call on the given file
if($file->hasMethod($this->fileEditValidator)) {
return $file->{$this->fileEditValidator}();
}
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user_error("Invalid value for UploadField::fileEditValidator", E_USER_ERROR);
}
/**
* Validator (eg RequiredFields) or string $name (of a method on File to provide a Validator) for the EditForm
* @example 'getCMSValidator'
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*
* @param Validator|string
* @return Uploadfield Self reference
*/
public function setFileEditValidator($fileEditValidator) {
$this->fileEditValidator = $fileEditValidator;
return $this;
}
/**
*
* @param AssetContainer $file
* @return string URL to thumbnail
*/
protected function getThumbnailURLForFile(AssetContainer $file) {
if (!$file->exists()) {
return null;
}
// Attempt to generate image at given size
$width = $this->getPreviewMaxWidth();
$height = $this->getPreviewMaxHeight();
if ($file->hasMethod('ThumbnailURL')) {
return $file->ThumbnailURL($width, $height);
}
if ($file->hasMethod('Thumbnail')) {
return $file->Thumbnail($width, $height)->getURL();
}
if ($file->hasMethod('Fit')) {
return $file->Fit($width, $height)->getURL();
}
// Check if unsized icon is available
if($file->hasMethod('getIcon')) {
return $file->getIcon();
}
}
public function getAttributes() {
return array_merge(
parent::getAttributes(),
array('data-selectdialog-url', $this->Link('select'))
);
}
public function extraClass() {
if($this->isDisabled()) {
$this->addExtraClass('disabled');
}
if($this->isReadonly()) {
$this->addExtraClass('readonly');
}
return parent::extraClass();
}
public function Field($properties = array()) {
Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.js');
Requirements::javascript(THIRDPARTY_DIR . '/jquery-ui/jquery-ui.js');
Requirements::javascript(THIRDPARTY_DIR . '/jquery-entwine/dist/jquery.entwine-dist.js');
Requirements::javascript(FRAMEWORK_ADMIN_DIR . '/javascript/ssui.core.js');
Requirements::add_i18n_javascript(FRAMEWORK_DIR . '/javascript/lang');
Requirements::combine_files('uploadfield.js', array(
// @todo jquery templates is a project no longer maintained and should be retired at some point.
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THIRDPARTY_DIR . '/javascript-templates/tmpl.js',
THIRDPARTY_DIR . '/javascript-loadimage/load-image.js',
THIRDPARTY_DIR . '/jquery-fileupload/jquery.iframe-transport.js',
THIRDPARTY_DIR . '/jquery-fileupload/cors/jquery.xdr-transport.js',
THIRDPARTY_DIR . '/jquery-fileupload/jquery.fileupload.js',
THIRDPARTY_DIR . '/jquery-fileupload/jquery.fileupload-ui.js',
FRAMEWORK_DIR . '/javascript/UploadField_uploadtemplate.js',
FRAMEWORK_DIR . '/javascript/UploadField_downloadtemplate.js',
FRAMEWORK_DIR . '/javascript/UploadField.js',
));
Requirements::css(THIRDPARTY_DIR . '/jquery-ui-themes/smoothness/jquery-ui.css'); // TODO hmmm, remove it?
Requirements::css(FRAMEWORK_DIR . '/css/UploadField.css');
// Calculated config as per jquery.fileupload-ui.js
$allowedMaxFileNumber = $this->getAllowedMaxFileNumber();
$config = array(
'url' => $this->Link('upload'),
'urlSelectDialog' => $this->Link('select'),
'urlAttach' => $this->Link('attach'),
'urlFileExists' => $this->link('fileexists'),
'acceptFileTypes' => '.+$',
// Fileupload treats maxNumberOfFiles as the max number of _additional_ items allowed
'maxNumberOfFiles' => $allowedMaxFileNumber ? ($allowedMaxFileNumber - count($this->getItemIDs())) : null,
'replaceFile' => $this->getUpload()->getReplaceFile(),
);
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// Validation: File extensions
if ($allowedExtensions = $this->getAllowedExtensions()) {
$config['acceptFileTypes'] = '(\.|\/)(' . implode('|', $allowedExtensions) . ')$';
$config['errorMessages']['acceptFileTypes'] = _t(
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'File.INVALIDEXTENSIONSHORT',
'Extension is not allowed'
);
}
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// Validation: File size
if ($allowedMaxFileSize = $this->getValidator()->getAllowedMaxFileSize()) {
$config['maxFileSize'] = $allowedMaxFileSize;
$config['errorMessages']['maxFileSize'] = _t(
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'File.TOOLARGESHORT',
'Filesize exceeds {size}',
array('size' => File::format_size($config['maxFileSize']))
);
}
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// Validation: Number of files
if ($allowedMaxFileNumber) {
if($allowedMaxFileNumber > 1) {
$config['errorMessages']['maxNumberOfFiles'] = _t(
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'UploadField.MAXNUMBEROFFILESSHORT',
'Can only upload {count} files',
array('count' => $allowedMaxFileNumber)
);
} else {
$config['errorMessages']['maxNumberOfFiles'] = _t(
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'UploadField.MAXNUMBEROFFILESONE',
'Can only upload one file'
);
}
}
// add overwrite warning error message to the config object sent to Javascript
if ($this->getOverwriteWarning()) {
$config['errorMessages']['overwriteWarning'] =
_t('UploadField.OVERWRITEWARNING', 'File with the same name already exists');
}
$mergedConfig = array_merge($config, $this->ufConfig);
return $this->customise(array(
'configString' => str_replace('"', "&quot;", Convert::raw2json($mergedConfig)),
'config' => new ArrayData($mergedConfig),
'multiple' => $allowedMaxFileNumber !== 1
))->renderWith($this->getTemplates());
}
/**
* Validation method for this field, called when the entire form is validated
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*
* @param Validator $validator
* @return boolean
*/
public function validate($validator) {
$name = $this->getName();
$files = $this->getItems();
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// If there are no files then quit
if($files->count() == 0) return true;
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// Check max number of files
$maxFiles = $this->getAllowedMaxFileNumber();
if($maxFiles && ($files->count() > $maxFiles)) {
$validator->validationError(
$name,
_t(
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'UploadField.MAXNUMBEROFFILES',
'Max number of {count} file(s) exceeded.',
array('count' => $maxFiles)
),
"validation"
);
return false;
}
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// Revalidate each file against nested validator
$this->upload->clearErrors();
foreach($files as $file) {
// Generate $_FILES style file attribute array for upload validator
$tmpFile = array(
'name' => $file->Name,
'type' => null, // Not used for type validation
'size' => $file->AbsoluteSize,
'tmp_name' => null, // Should bypass is_uploaded_file check
'error' => UPLOAD_ERR_OK,
);
$this->upload->validate($tmpFile);
}
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// Check all errors
if($errors = $this->upload->getErrors()) {
foreach($errors as $error) {
$validator->validationError($name, $error, "validation");
}
return false;
}
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return true;
}
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/**
* @param SS_HTTPRequest $request
* @return UploadField_ItemHandler
*/
public function handleItem(SS_HTTPRequest $request) {
return $this->getItemHandler($request->param('ID'));
}
/**
* @param int $itemID
* @return UploadField_ItemHandler
*/
public function getItemHandler($itemID) {
return UploadField_ItemHandler::create($this, $itemID);
}
/**
* @param SS_HTTPRequest $request
* @return UploadField_ItemHandler
*/
public function handleSelect(SS_HTTPRequest $request) {
if(!$this->canAttachExisting()) return $this->httpError(403);
return UploadField_SelectHandler::create($this, $this->getFolderName());
}
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/**
* Given an array of post variables, extract all temporary file data into an array
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*
* @param array $postVars Array of posted form data
* @return array List of temporary file data
*/
protected function extractUploadedFileData($postVars) {
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// Note: Format of posted file parameters in php is a feature of using
// <input name='{$Name}[Uploads][]' /> for multiple file uploads
$tmpFiles = array();
if( !empty($postVars['tmp_name'])
&& is_array($postVars['tmp_name'])
&& !empty($postVars['tmp_name']['Uploads'])
) {
for($i = 0; $i < count($postVars['tmp_name']['Uploads']); $i++) {
// Skip if "empty" file
if(empty($postVars['tmp_name']['Uploads'][$i])) continue;
$tmpFile = array();
foreach(array('name', 'type', 'tmp_name', 'error', 'size') as $field) {
$tmpFile[$field] = $postVars[$field]['Uploads'][$i];
}
$tmpFiles[] = $tmpFile;
}
} elseif(!empty($postVars['tmp_name'])) {
// Fallback to allow single file uploads (method used by AssetUploadField)
$tmpFiles[] = $postVars;
}
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return $tmpFiles;
}
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/**
* Loads the temporary file data into a File object
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*
* @param array $tmpFile Temporary file data
* @param string $error Error message
* @return AssetContainer File object, or null if error
*/
protected function saveTemporaryFile($tmpFile, &$error = null) {
// Determine container object
$error = null;
$fileObject = null;
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if (empty($tmpFile)) {
$error = _t('UploadField.FIELDNOTSET', 'File information not found');
return null;
}
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if($tmpFile['error']) {
$error = $tmpFile['error'];
return null;
}
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// Search for relations that can hold the uploaded files, but don't fallback
// to default if there is no automatic relation
if ($relationClass = $this->getRelationAutosetClass(null)) {
// Create new object explicitly. Otherwise rely on Upload::load to choose the class.
$fileObject = Object::create($relationClass);
if(! ($fileObject instanceof DataObject) || !($fileObject instanceof AssetContainer)) {
throw new InvalidArgumentException("Invalid asset container $relationClass");
}
}
// Get the uploaded file into a new file object.
try {
$this->upload->loadIntoFile($tmpFile, $fileObject, $this->getFolderName());
} catch (Exception $e) {
// we shouldn't get an error here, but just in case
$error = $e->getMessage();
return null;
}
// Check if upload field has an error
if ($this->upload->isError()) {
$error = implode(' ' . PHP_EOL, $this->upload->getErrors());
return null;
}
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// return file
return $this->upload->getFile();
}
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/**
* Safely encodes the File object with all standard fields required
* by the front end
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*
* @param AssetContainer $file Object which contains a file
* @return array Array encoded list of file attributes
*/
protected function encodeFileAttributes(AssetContainer $file) {
// Collect all output data.
$customised = $this->customiseFile($file);
return array(
'id' => $file->ID,
'name' => basename($file->getFilename()),
'url' => $file->getURL(),
'thumbnail_url' => $customised->UploadFieldThumbnailURL,
'edit_url' => $customised->UploadFieldEditLink,
'size' => $file->getAbsoluteSize(),
'type' => File::get_file_type($file->getFilename()),
'buttons' => $customised->UploadFieldFileButtons,
'fieldname' => $this->getName()
);
}
/**
* Action to handle upload of a single file
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*
* @param SS_HTTPRequest $request
* @return SS_HTTPResponse
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* @return SS_HTTPResponse
*/
public function upload(SS_HTTPRequest $request) {
if($this->isDisabled() || $this->isReadonly() || !$this->canUpload()) {
return $this->httpError(403);
}
// Protect against CSRF on destructive action
$token = $this->getForm()->getSecurityToken();
if(!$token->checkRequest($request)) return $this->httpError(400);
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// Get form details
$name = $this->getName();
$postVars = $request->postVar($name);
// Extract uploaded files from Form data
$uploadedFiles = $this->extractUploadedFileData($postVars);
$return = array();
// Save the temporary files into a File objects
// and save data/error on a per file basis
foreach ($uploadedFiles as $tempFile) {
$file = $this->saveTemporaryFile($tempFile, $error);
if(empty($file)) {
array_push($return, array('error' => $error));
} else {
array_push($return, $this->encodeFileAttributes($file));
}
$this->upload->clearErrors();
}
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// Format response with json
$response = new SS_HTTPResponse(Convert::raw2json($return));
$response->addHeader('Content-Type', 'text/plain');
return $response;
}
/**
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* Retrieves details for files that this field wishes to attache to the
* client-side form
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*
* @param SS_HTTPRequest $request
* @return SS_HTTPResponse
*/
public function attach(SS_HTTPRequest $request) {
if(!$request->isPOST()) return $this->httpError(403);
if(!$this->canAttachExisting()) return $this->httpError(403);
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// Retrieve file attributes required by front end
$return = array();
$files = File::get()->byIDs($request->postVar('ids'));
foreach($files as $file) {
$return[] = $this->encodeFileAttributes($file);
}
$response = new SS_HTTPResponse(Convert::raw2json($return));
$response->addHeader('Content-Type', 'application/json');
return $response;
}
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/**
* Check if file exists, both checking filtered filename and exact filename
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*
* @param string $originalFile Filename
* @return bool
*/
protected function checkFileExists($originalFile) {
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// Check both original and safely filtered filename
$nameFilter = FileNameFilter::create();
$filteredFile = $nameFilter->filter($originalFile);
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// Resolve expected folder name
$folderName = $this->getFolderName();
$folder = Folder::find_or_make($folderName);
$parentPath = $folder ? $folder->getFilename() : '';
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// check if either file exists
return File::find($parentPath.$originalFile) || File::find($parentPath.$filteredFile);
}
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/**
* Determines if a specified file exists
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*
* @param SS_HTTPRequest $request
*/
public function fileexists(SS_HTTPRequest $request) {
// Assert that requested filename doesn't attempt to escape the directory
$originalFile = $request->requestVar('filename');
if($originalFile !== basename($originalFile)) {
$return = array(
'error' => _t('File.NOVALIDUPLOAD', 'File is not a valid upload')
);
} else {
$return = array(
'exists' => $this->checkFileExists($originalFile)
);
}
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// Encode and present response
$response = new SS_HTTPResponse(Convert::raw2json($return));
$response->addHeader('Content-Type', 'application/json');
if (!empty($return['error'])) $response->setStatusCode(400);
return $response;
}
public function performReadonlyTransformation() {
$clone = clone $this;
$clone->addExtraClass('readonly');
$clone->setReadonly(true);
return $clone;
}
/**
* Gets the foreign class that needs to be created, or 'File' as default if there
* is no relationship, or it cannot be determined.
*
* @param $default Default value to return if no value could be calculated
* @return string Foreign class name.
*/
public function getRelationAutosetClass($default = 'File') {
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// Don't autodetermine relation if no relationship between parent record
if(!$this->relationAutoSetting) return $default;
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// Check record and name
$name = $this->getName();
$record = $this->getRecord();
if(empty($name) || empty($record)) {
return $default;
} else {
$class = $record->getRelationClass($name);
return empty($class) ? $default : $class;
}
}
}
/**
* RequestHandler for actions (edit, remove, delete) on a single item (File) of the UploadField
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*
* @author Zauberfisch
* @package forms
* @subpackages fields-files
*/
class UploadField_ItemHandler extends RequestHandler {
/**
* @var UploadFIeld
*/
protected $parent;
/**
* @var int FileID
*/
protected $itemID;
private static $url_handlers = array(
'$Action!' => '$Action',
'' => 'index',
);
private static $allowed_actions = array(
'delete',
'edit',
'EditForm',
);
/**
* @param UploadFIeld $parent
* @param int $itemID
*/
public function __construct($parent, $itemID) {
$this->parent = $parent;
$this->itemID = $itemID;
parent::__construct();
}
/**
* @return File
*/
public function getItem() {
return DataObject::get_by_id('File', $this->itemID);
}
/**
* @param string $action
* @return string
*/
public function Link($action = null) {
return Controller::join_links($this->parent->Link(), '/item/', $this->itemID, $action);
}
/**
* @return string
*/
public function DeleteLink() {
$token = $this->parent->getForm()->getSecurityToken();
return $token->addToUrl($this->Link('delete'));
}
/**
* @return string
*/
public function EditLink() {
return $this->Link('edit');
}
/**
* Action to handle deleting of a single file
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*
* @param SS_HTTPRequest $request
* @return SS_HTTPResponse
*/
public function delete(SS_HTTPRequest $request) {
// Check form field state
if($this->parent->isDisabled() || $this->parent->isReadonly()) return $this->httpError(403);
// Protect against CSRF on destructive action
$token = $this->parent->getForm()->getSecurityToken();
if(!$token->checkRequest($request)) return $this->httpError(400);
// Check item permissions
$item = $this->getItem();
if(!$item) return $this->httpError(404);
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if($item instanceof Folder) return $this->httpError(403);
if(!$item->canDelete()) return $this->httpError(403);
// Delete the file from the filesystem. The file will be removed
// from the relation on save
// @todo Investigate if references to deleted files (if unsaved) is dangerous
$item->delete();
}
/**
* Action to handle editing of a single file
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*
* @param SS_HTTPRequest $request
* @return ViewableData_Customised
*/
public function edit(SS_HTTPRequest $request) {
// Check form field state
if($this->parent->isDisabled() || $this->parent->isReadonly()) return $this->httpError(403);
// Check item permissions
$item = $this->getItem();
if(!$item) return $this->httpError(404);
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if($item instanceof Folder) return $this->httpError(403);
if(!$item->canEdit()) return $this->httpError(403);
Requirements::css(FRAMEWORK_DIR . '/css/UploadField.css');
return $this->customise(array(
'Form' => $this->EditForm()
))->renderWith($this->parent->getTemplateFileEdit());
}
/**
* @return Form
*/
public function EditForm() {
$file = $this->getItem();
// Get form components
$fields = $this->parent->getFileEditFields($file);
$actions = $this->parent->getFileEditActions($file);
$validator = $this->parent->getFileEditValidator($file);
$form = new Form(
$this,
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__FUNCTION__,
$fields,
$actions,
$validator
);
$form->loadDataFrom($file);
$form->addExtraClass('small');
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return $form;
}
/**
* @param array $data
* @param Form $form
* @param SS_HTTPRequest $request
*/
public function doEdit(array $data, Form $form, SS_HTTPRequest $request) {
// Check form field state
if($this->parent->isDisabled() || $this->parent->isReadonly()) return $this->httpError(403);
// Check item permissions
$item = $this->getItem();
if(!$item) return $this->httpError(404);
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if($item instanceof Folder) return $this->httpError(403);
if(!$item->canEdit()) return $this->httpError(403);
$form->saveInto($item);
$item->write();
$form->sessionMessage(_t('UploadField.Saved', 'Saved'), 'good');
return $this->edit($request);
}
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}
/**
* File selection popup for attaching existing files.
*
* @package forms
* @subpackages fields-files
*/
class UploadField_SelectHandler extends RequestHandler {
/**
* @var UploadField
*/
protected $parent;
/**
* @var string
*/
protected $folderName;
private static $url_handlers = array(
'$Action!' => '$Action',
'' => 'index',
);
private static $allowed_actions = array(
'Form'
);
public function __construct($parent, $folderName = null) {
$this->parent = $parent;
$this->folderName = $folderName;
parent::__construct();
}
public function index() {
// Requires a separate JS file, because we can't reach into the iframe with entwine.
Requirements::javascript(FRAMEWORK_DIR . '/javascript/UploadField_select.js');
return $this->renderWith('CMSDialog');
}
/**
* @param string $action
* @return string
*/
public function Link($action = null) {
return Controller::join_links($this->parent->Link(), '/select/', $action);
}
/**
* Build the file selection form.
*
* @return Form
*/
public function Form() {
// Find out the requested folder ID.
$folderID = $this->parent->getRequest()->requestVar('ParentID');
if ($folderID === null && $this->parent->getDisplayFolderName()) {
$folder = Folder::find_or_make($this->parent->getDisplayFolderName());
$folderID = $folder ? $folder->ID : 0;
}
// Construct the form
$action = new FormAction('doAttach', _t('UploadField.AttachFile', 'Attach file(s)'));
$action->addExtraClass('ss-ui-action-constructive icon-accept');
$form = new Form(
$this,
'Form',
new FieldList($this->getListField($folderID)),
new FieldList($action)
);
// Add a class so we can reach the form from the frontend.
$form->addExtraClass('uploadfield-form');
return $form;
}
/**
* @param $folderID The ID of the folder to display.
* @return FormField
*/
protected function getListField($folderID) {
// Generate the folder selection field.
$folderField = new TreeDropdownField('ParentID', _t('HtmlEditorField.FOLDER', 'Folder'), 'Folder');
$folderField->setValue($folderID);
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// Generate the file list field.
$config = GridFieldConfig::create();
$config->addComponent(new GridFieldSortableHeader());
$config->addComponent(new GridFieldFilterHeader());
$config->addComponent($colsComponent = new GridFieldDataColumns());
$colsComponent->setDisplayFields(array(
'StripThumbnail' => '',
'Title' => singleton('File')->fieldLabel('Title'),
'Created' => singleton('File')->fieldLabel('Created'),
'Size' => singleton('File')->fieldLabel('Size')
));
$colsComponent->setFieldCasting(array(
'Created' => 'SS_Datetime->Nice'
));
$config->addComponent(new GridFieldPaginator(11));
// If relation is to be autoset, we need to make sure we only list compatible objects.
$baseClass = $this->parent->getRelationAutosetClass();
// Create the data source for the list of files within the current directory.
$files = DataList::create($baseClass)->exclude('ClassName', 'Folder');
if($folderID) $files = $files->filter('ParentID', $folderID);
$fileField = new GridField('Files', false, $files, $config);
$fileField->setAttribute('data-selectable', true);
if($this->parent->getAllowedMaxFileNumber() !== 1) {
$fileField->setAttribute('data-multiselect', true);
}
$selectComposite = new CompositeField(
$folderField,
$fileField
);
return $selectComposite;
}
public function doAttach($data, $form) {
// Popup-window attach does not require server side action, as it is implemented via JS
}
2012-02-08 15:35:34 +01:00
}