779 lines
21 KiB
PHP
779 lines
21 KiB
PHP
<?php
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use SilverStripe\Filesystem\Storage\AssetContainer;
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use SilverStripe\Filesystem\Storage\AssetStore;
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use SilverStripe\Filesystem\Storage\DBFile;
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/**
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* Field for uploading into a DBFile instance.
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*
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* This formfield has fewer options than UploadField:
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* - Assets can only be uploaded, not attached from library
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* - Duplicate files will only be renamed, not allowed to overwrite existing references.
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* - Only one file may be attached.
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* - Files can't be edited once uploaded.
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* - Attached files can only be removed, not deleted.
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*
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* @package forms
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*/
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class AssetField extends FileField {
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/**
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* @var array
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*/
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private static $allowed_actions = array(
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'upload'
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);
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/**
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* @var array
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*/
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private static $url_handlers = array(
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'$Action!' => '$Action',
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);
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private static $casting = array(
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'Value' => 'DBFile',
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'UploadFieldThumbnailURL' => 'Varchar'
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);
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/**
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* Template to use for the file button widget
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*
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* @var string
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*/
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protected $templateFileButtons = 'AssetField_FileButtons';
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/**
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* Parent data record. Will be infered from parent form or controller if blank. The destination
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* DBFile should be a property of the name $name on this object.
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*
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* @var DataObject
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*/
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protected $record;
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/**
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* Config for this field used in the front-end javascript
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* (will be merged into the config of the javascript file upload plugin).
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*
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* @var array
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*/
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protected $ufConfig = array();
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/**
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* Front end config defaults
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*
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* @config
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* @var array
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*/
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private static $defaultConfig = array(
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/**
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* Automatically upload the file once selected
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*
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* @var boolean
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*/
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'autoUpload' => true,
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/**
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* Can the user upload new files.
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* String values are interpreted as permission codes.
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*
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* @var boolean|string
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*/
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'canUpload' => true,
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/**
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* Shows the target folder for new uploads in the field UI.
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* Disable to keep the internal filesystem structure hidden from users.
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*
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* @var boolean|string
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*/
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'canPreviewFolder' => true,
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/**
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* Indicate a change event to the containing form if an upload
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* or file edit/delete was performed.
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*
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* @var boolean
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*/
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'changeDetection' => true,
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/**
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* Maximum width of the preview thumbnail
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*
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* @var integer
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*/
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'previewMaxWidth' => 80,
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/**
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* Maximum height of the preview thumbnail
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*
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* @var integer
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*/
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'previewMaxHeight' => 60,
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/**
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* javascript template used to display uploading files
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*
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* @see javascript/UploadField_uploadtemplate.js
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* @var string
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*/
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'uploadTemplateName' => 'ss-uploadfield-uploadtemplate',
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/**
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* javascript template used to display already uploaded files
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*
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* @see javascript/UploadField_downloadtemplate.js
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* @var string
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*/
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'downloadTemplateName' => 'ss-uploadfield-downloadtemplate'
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);
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/**
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* Folder to display in "Select files" list.
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* Defaults to listing all files regardless of folder.
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* The folder path should be relative to the webroot.
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* See {@link FileField->folderName} to set the upload target instead.
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*
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* @var string
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* @example admin/folder/subfolder
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*/
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protected $displayFolderName;
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/**
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* Construct a new UploadField instance
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*
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* @param string $name The internal field name, passed to forms.
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* @param string $title The field label.
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* @param Form $form Reference to the container form
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*/
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public function __construct($name, $title = null) {
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$this->addExtraClass('ss-upload'); // class, used by js
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$this->addExtraClass('ss-uploadfield'); // class, used by css for uploadfield only
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$this->ufConfig = array_merge($this->ufConfig, self::config()->defaultConfig);
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parent::__construct($name, $title);
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// AssetField always uses rename replacement method
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$this->getUpload()->setReplaceFile(false);
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// filter out '' since this would be a regex problem on JS end
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$this->getValidator()->setAllowedExtensions(
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array_filter(Config::inst()->get('File', 'allowed_extensions'))
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);
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// get the lower max size
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$maxUpload = File::ini2bytes(ini_get('upload_max_filesize'));
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$maxPost = File::ini2bytes(ini_get('post_max_size'));
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$this->getValidator()->setAllowedMaxFileSize(min($maxUpload, $maxPost));
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}
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/**
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* Set name of template used for Buttons on each file (replace, edit, remove, delete) (without path or extension)
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*
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* @param string
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* @return $this
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*/
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public function setTemplateFileButtons($template) {
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$this->templateFileButtons = $template;
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return $this;
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}
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/**
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* @return string
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*/
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public function getTemplateFileButtons() {
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return $this->templateFileButtons;
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}
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/**
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* Determine if the target folder for new uploads in is visible the field UI.
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*
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* @return boolean
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*/
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public function canPreviewFolder() {
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if(!$this->isActive()) {
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return false;
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}
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$can = $this->getConfig('canPreviewFolder');
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if(is_bool($can)) {
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return $can;
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}
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return Permission::check($can);
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}
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/**
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* Determine if the target folder for new uploads in is visible the field UI.
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* Disable to keep the internal filesystem structure hidden from users.
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*
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* @param boolean|string $canPreviewFolder Either a boolean flag, or a
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* required permission code
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* @return $this Self reference
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*/
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public function setCanPreviewFolder($canPreviewFolder) {
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return $this->setConfig('canPreviewFolder', $canPreviewFolder);
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}
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/**
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* @param string
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* @return $this
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*/
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public function setDisplayFolderName($name) {
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$this->displayFolderName = $name;
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return $this;
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}
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/**
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* @return string
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*/
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public function getDisplayFolderName() {
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return $this->displayFolderName;
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}
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/**
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* Force a record to be used as "Parent" for uploaded Files (eg a Page with a has_one to File)
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* @param DataObject $record
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*/
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public function setRecord($record) {
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$this->record = $record;
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return $this;
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}
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/**
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* Get the record to use as "Parent" for uploaded Files (eg a Page with a has_one to File) If none is set, it will
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* use Form->getRecord().
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*
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* @return DataObject
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*/
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public function getRecord() {
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if (!$this->record
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&& $this->form
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&& ($record = $this->form->getRecord())
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&& $record instanceof DataObject
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) {
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$this->record = $record;
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}
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return $this->record;
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}
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public function setValue($value, $record = null) {
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// Extract value from underlying record
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if(empty($value) && $this->getName() && $record instanceof DataObject) {
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$name = $this->getName();
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$value = $record->$name;
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}
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// Convert asset container to tuple value
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if($value instanceof AssetContainer) {
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if($value->exists()) {
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$value = array(
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'Filename' => $value->getFilename(),
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'Hash' => $value->getHash(),
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'Variant' => $value->getVariant()
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);
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} else {
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$value = null;
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}
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}
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// If javascript is disabled, direct file upload (non-html5 style) can
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// trigger a single or multiple file submission. Note that this may be
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// included in addition to re-submitted File IDs as above, so these
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// should be added to the list instead of operated on independently.
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if($uploadedFile = $this->extractUploadedFileData($value)) {
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$value = $this->saveTemporaryFile($uploadedFile, $error);
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if(!$value) {
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throw new ValidationException($error);
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}
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}
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// Set value using parent
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return parent::setValue($value, $record);
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}
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public function Value() {
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// Re-override FileField Value to use data value
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return $this->dataValue();
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}
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public function saveInto(DataObjectInterface $record) {
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// Check required relation details are available
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$name = $this->getName();
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if(!$name) {
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return $this;
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}
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$value = $this->Value();
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foreach(array('Filename', 'Hash', 'Variant') as $part) {
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$partValue = isset($value[$part])
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? $value[$part]
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: null;
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$record->setField("{$name}{$part}", $partValue);
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}
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return $this;
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}
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/**
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* Assign a front-end config variable for the upload field
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*
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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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*
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* @param string $key
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* @param mixed $val
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* @return $this self reference
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*/
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public function setConfig($key, $val) {
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$this->ufConfig[$key] = $val;
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return $this;
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}
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/**
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* Gets a front-end config variable for the upload field
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*
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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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*
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* @param string $key
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* @return mixed
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*/
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public function getConfig($key) {
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if(isset($this->ufConfig[$key])) {
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return $this->ufConfig[$key];
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}
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}
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/**
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* Determine if the field should automatically upload the file.
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*
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* @return boolean
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*/
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public function getAutoUpload() {
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return $this->getConfig('autoUpload');
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}
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/**
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* Determine if the field should automatically upload the file
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*
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* @param boolean $autoUpload
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* @return $this Self reference
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*/
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public function setAutoUpload($autoUpload) {
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return $this->setConfig('autoUpload', $autoUpload);
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}
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/**
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* Determine if the user has permission to upload.
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*
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* @return boolean
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*/
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public function canUpload() {
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if(!$this->isActive()) {
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return false;
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}
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$can = $this->getConfig('canUpload');
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if(is_bool($can)) {
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return $can;
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}
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return Permission::check($can);
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}
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/**
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* Specify whether the user can upload files.
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* String values will be treated as required permission codes
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*
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* @param bool|string $canUpload Either a boolean flag, or a required
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* permission code
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* @return $this Self reference
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*/
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public function setCanUpload($canUpload) {
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return $this->setConfig('canUpload', $canUpload);
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}
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/**
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* Returns true if the field is neither readonly nor disabled
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*
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* @return bool
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*/
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public function isActive() {
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return !$this->isDisabled() && !$this->isReadonly();
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}
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/**
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* Gets thumbnail width. Defaults to 80
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*
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* @return int
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*/
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public function getPreviewMaxWidth() {
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return $this->getConfig('previewMaxWidth');
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}
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/**
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* Set thumbnail width.
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*
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* @param int $previewMaxWidth
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* @return $this Self reference
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*/
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public function setPreviewMaxWidth($previewMaxWidth) {
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return $this->setConfig('previewMaxWidth', $previewMaxWidth);
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}
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/**
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* Gets thumbnail height. Defaults to 60
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*
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* @return int
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*/
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public function getPreviewMaxHeight() {
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return $this->getConfig('previewMaxHeight');
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}
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/**
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* Set thumbnail height.
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*
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* @param int $previewMaxHeight
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* @return $this Self reference
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*/
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public function setPreviewMaxHeight($previewMaxHeight) {
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return $this->setConfig('previewMaxHeight', $previewMaxHeight);
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}
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/**
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* javascript template used to display uploading files
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* Defaults to 'ss-uploadfield-uploadtemplate'
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*
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* @see javascript/UploadField_uploadtemplate.js
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* @var string
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*/
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public function getUploadTemplateName() {
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return $this->getConfig('uploadTemplateName');
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}
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/**
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* Set javascript template used to display uploading files
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*
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* @param string $uploadTemplateName
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* @return $this Self reference
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*/
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public function setUploadTemplateName($uploadTemplateName) {
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return $this->setConfig('uploadTemplateName', $uploadTemplateName);
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}
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/**
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* javascript template used to display already uploaded files
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* Defaults to 'ss-downloadfield-downloadtemplate'
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*
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* @see javascript/DownloadField_downloadtemplate.js
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* @var string
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*/
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public function getDownloadTemplateName() {
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return $this->getConfig('downloadTemplateName');
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}
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/**
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* Set javascript template used to display already uploaded files
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*
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* @param string $downloadTemplateName
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* @return $this Self reference
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*/
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public function setDownloadTemplateName($downloadTemplateName) {
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return $this->setConfig('downloadTemplateName', $downloadTemplateName);
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}
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public function extraClass() {
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if($this->isDisabled()) {
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$this->addExtraClass('disabled');
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}
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if($this->isReadonly()) {
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$this->addExtraClass('readonly');
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}
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return parent::extraClass();
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}
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public function Field($properties = array()) {
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Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.js');
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Requirements::javascript(THIRDPARTY_DIR . '/jquery-ui/jquery-ui.js');
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Requirements::javascript(THIRDPARTY_DIR . '/jquery-entwine/dist/jquery.entwine-dist.js');
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Requirements::javascript(FRAMEWORK_ADMIN_DIR . '/client/dist/js/ssui.core.js');
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Requirements::add_i18n_javascript(FRAMEWORK_DIR . '/client/lang');
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Requirements::combine_files('uploadfield.js', array(
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// @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',
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THIRDPARTY_DIR . '/javascript-loadimage/load-image.js',
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THIRDPARTY_DIR . '/jquery-fileupload/jquery.iframe-transport.js',
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THIRDPARTY_DIR . '/jquery-fileupload/cors/jquery.xdr-transport.js',
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THIRDPARTY_DIR . '/jquery-fileupload/jquery.fileupload.js',
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THIRDPARTY_DIR . '/jquery-fileupload/jquery.fileupload-ui.js',
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FRAMEWORK_DIR . '/client/dist/js/UploadField_uploadtemplate.js',
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FRAMEWORK_DIR . '/client/dist/js/UploadField_downloadtemplate.js',
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FRAMEWORK_DIR . '/client/dist/js/UploadField.js',
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));
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Requirements::css(THIRDPARTY_DIR . '/jquery-ui-themes/smoothness/jquery-ui.css'); // TODO hmmm, remove it?
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Requirements::css(FRAMEWORK_DIR . '/client/dist/styles/UploadField.css');
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// Calculated config as per jquery.fileupload-ui.js
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$config = array(
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'allowedMaxFileNumber' => 1, // Only one file allowed for AssetField
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'url' => $this->Link('upload'),
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'urlSelectDialog' => $this->Link('select'),
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'urlAttach' => $this->Link('attach'),
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'urlFileExists' => $this->link('fileexists'),
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'acceptFileTypes' => '.+$',
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// Fileupload treats maxNumberOfFiles as the max number of _additional_ items allowed
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'maxNumberOfFiles' => $this->Value() ? 0 : 1,
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'replaceFile' => false, // Should always be false for AssetField
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);
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// Validation: File extensions
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if ($allowedExtensions = $this->getAllowedExtensions()) {
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$config['acceptFileTypes'] = '(\.|\/)(' . implode('|', $allowedExtensions) . ')$';
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$config['errorMessages']['acceptFileTypes'] = _t(
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'File.INVALIDEXTENSIONSHORT',
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'Extension is not allowed'
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);
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}
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// Validation: File size
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if ($allowedMaxFileSize = $this->getValidator()->getAllowedMaxFileSize()) {
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$config['maxFileSize'] = $allowedMaxFileSize;
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$config['errorMessages']['maxFileSize'] = _t(
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'File.TOOLARGESHORT',
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'Filesize exceeds {size}',
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array('size' => File::format_size($config['maxFileSize']))
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);
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}
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$mergedConfig = array_merge($config, $this->ufConfig);
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return $this->customise(array(
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'ConfigString' => Convert::raw2json($mergedConfig),
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'UploadFieldFileButtons' => $this->renderWith($this->getTemplateFileButtons())
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))->renderWith($this->getTemplates());
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}
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/**
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* Validation method for this field, called when the entire form is validated
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*
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* @param Validator $validator
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* @return boolean
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*/
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public function validate($validator) {
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$name = $this->getName();
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$value = $this->Value();
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// If there is no file then quit
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if(!$value) {
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return true;
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}
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// Revalidate each file against nested validator
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$this->getUpload()->clearErrors();
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// Generate $_FILES style file attribute array for upload validator
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$store = $this->getAssetStore();
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$mime = $store->getMimeType($value['Filename'], $value['Hash'], $value['Variant']);
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$metadata = $store->getMetadata($value['Filename'], $value['Hash'], $value['Variant']);
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|
$tmpFile = array(
|
|
'name' => $value['Filename'],
|
|
'type' => $mime,
|
|
'size' => isset($metadata['size']) ? $metadata['size'] : 0,
|
|
'tmp_name' => null, // Should bypass is_uploaded_file check
|
|
'error' => UPLOAD_ERR_OK,
|
|
);
|
|
$this->getUpload()->validate($tmpFile);
|
|
|
|
// Check all errors
|
|
if($errors = $this->getUpload()->getErrors()) {
|
|
foreach($errors as $error) {
|
|
$validator->validationError($name, $error, "validation");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Given an array of post variables, extract all temporary file data into an array
|
|
*
|
|
* @param array $postVars Array of posted form data
|
|
* @return array data for uploaded file
|
|
*/
|
|
protected function extractUploadedFileData($postVars) {
|
|
// Note: Format of posted file parameters in php is a feature of using
|
|
// <input name='{$Name}[Upload]' /> for multiple file uploads
|
|
|
|
// Skip empty file
|
|
if(empty($postVars['tmp_name'])) {
|
|
return null;
|
|
}
|
|
|
|
// Return single level array for posted file
|
|
if(empty($postVars['tmp_name']['Upload'])) {
|
|
return $postVars;
|
|
}
|
|
|
|
// Extract posted feedback value
|
|
$tmpFile = array();
|
|
foreach(array('name', 'type', 'tmp_name', 'error', 'size') as $field) {
|
|
$tmpFile[$field] = $postVars[$field]['Upload'];
|
|
}
|
|
return $tmpFile;
|
|
}
|
|
|
|
/**
|
|
* Loads the temporary file data into the asset store, and return the tuple details
|
|
* for the result.
|
|
*
|
|
* @param array $tmpFile Temporary file data
|
|
* @param string $error Error message
|
|
* @return array Result of saved file, or null if error
|
|
*/
|
|
protected function saveTemporaryFile($tmpFile, &$error = null) {
|
|
$error = null;
|
|
if (empty($tmpFile)) {
|
|
$error = _t('UploadField.FIELDNOTSET', 'File information not found');
|
|
return null;
|
|
}
|
|
|
|
if($tmpFile['error']) {
|
|
$error = $tmpFile['error'];
|
|
return null;
|
|
}
|
|
|
|
// Get the uploaded file into a new file object.
|
|
try {
|
|
$result = $this
|
|
->getUpload()
|
|
->load($tmpFile, $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->getUpload()->isError()) {
|
|
$error = implode(' ' . PHP_EOL, $this->getUpload()->getErrors());
|
|
return null;
|
|
}
|
|
|
|
// return tuple array of Filename, Hash and Variant
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Safely encodes the File object with all standard fields required
|
|
* by the front end
|
|
*
|
|
* @param string $filename
|
|
* @param string $hash
|
|
* @param string $variant
|
|
* @return array Encoded list of file attributes
|
|
*/
|
|
protected function encodeAssetAttributes($filename, $hash, $variant) {
|
|
// Force regeneration of file thumbnail for this tuple (without saving into db)
|
|
$object = DBFile::create();
|
|
$object->setValue(array('Filename' => $filename, 'Hash' => $hash, 'Variant' => $variant));
|
|
|
|
return array(
|
|
'filename' => $filename,
|
|
'hash' => $hash,
|
|
'variant' => $variant,
|
|
'name' => $object->getBasename(),
|
|
'url' => $object->getURL(),
|
|
'thumbnail_url' => $object->ThumbnailURL(
|
|
$this->getPreviewMaxWidth(),
|
|
$this->getPreviewMaxHeight()
|
|
),
|
|
'size' => $object->getAbsoluteSize(),
|
|
'type' => File::get_file_type($object->getFilename()),
|
|
'buttons' => (string)$this->renderWith($this->getTemplateFileButtons()),
|
|
'fieldname' => $this->getName()
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Action to handle upload of a single file
|
|
*
|
|
* @param SS_HTTPRequest $request
|
|
* @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);
|
|
}
|
|
|
|
// Get form details
|
|
$name = $this->getName();
|
|
$postVars = $request->postVar($name);
|
|
|
|
// Extract uploaded files from Form data
|
|
$uploadedFile = $this->extractUploadedFileData($postVars);
|
|
if(!$uploadedFile) {
|
|
return $this->httpError(400);
|
|
}
|
|
|
|
// Save the temporary files into a File objects
|
|
// and save data/error on a per file basis
|
|
$result = $this->saveTemporaryFile($uploadedFile, $error);
|
|
if(empty($result)) {
|
|
$return = array('error' => $error);
|
|
} else {
|
|
$return = $this->encodeAssetAttributes($result['Filename'], $result['Hash'], $result['Variant']);
|
|
}
|
|
$this
|
|
->getUpload()
|
|
->clearErrors();
|
|
|
|
// Format response with json
|
|
$response = new SS_HTTPResponse(Convert::raw2json(array($return)));
|
|
$response->addHeader('Content-Type', 'text/plain');
|
|
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') {
|
|
|
|
// Don't autodetermine relation if no relationship between parent record
|
|
if(!$this->relationAutoSetting) return $default;
|
|
|
|
// 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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return AssetStore
|
|
*/
|
|
protected function getAssetStore() {
|
|
return Injector::inst()->get('AssetStore');
|
|
}
|
|
|
|
}
|