/**
* Renders the form field, loads requirements. Sets file size based on php.ini
* Adds the security token
*
* @param array $attributes [description]
* @return SSViewer
*/
public function FieldHolder($attributes = array())
{
Requirements::javascript(DROPZONE_DIR . '/javascript/dropzone.js');
Requirements::javascript(DROPZONE_DIR . '/javascript/file_attachment_field.js');
if ($this->isCMS()) {
Requirements::javascript(DROPZONE_DIR . '/javascript/file_attachment_field_backend.js');
}
Requirements::css(DROPZONE_DIR . '/css/file_attachment_field.css');
if (!$this->getSetting('url')) {
$this->settings['url'] = $this->Link('upload');
}
if (!$this->getSetting('maxFilesize')) {
$this->settings['maxFilesize'] = static::get_filesize_from_ini();
}
// The user may not have opted into a multiple upload. If the form field
// is attached to a record that has a multi relation, set that automatically.
$this->settings['uploadMultiple'] = $this->IsMultiple();
// Auto filter images if assigned to an Image relation
if ($class = $this->getFileClass()) {
if (Injector::inst()->get($class) instanceof Image) {
$this->imagesOnly();
}
}
if ($token = $this->getForm()->getSecurityToken()) {
$this->addParam($token->getName(), $token->getSecurityID());
}
return parent::FieldHolder($attributes);
}