/**
* Given the fields being exported, and the single record,
* work out which export format(s) we can use
*
* @param array $fields array of field objects
* @param object $record The data record object
*
* @uses PORTFOLIO_FORMAT_PLAINHTML
* @uses PORTFOLIO_FORMAT_RICHHTML
*
* @return array of PORTFOLIO_XX constants
*/
public static function formats($fields, $record)
{
$formats = array(PORTFOLIO_FORMAT_PLAINHTML);
$includedfiles = array();
foreach ($fields as $singlefield) {
if (is_callable(array($singlefield, 'get_file'))) {
$includedfiles[] = $singlefield->get_file($record->id);
}
}
if (count($includedfiles) == 1 && count($fields) == 1) {
$formats = array(portfolio_format_from_mimetype($includedfiles[0]->get_mimetype()));
} else {
if (count($includedfiles) > 0) {
$formats = array(PORTFOLIO_FORMAT_RICHHTML);
}
}
return array($formats, $includedfiles);
}
/**
* correllary to set_format_by_file, but this is used when we don't yet have a stored_file
* when we're writing out a new type of file (like csv or pdf)
*
* @param string $extn the file extension we intend to generate
* @param mixed $extraformats any additional formats other than by mimetype
* eg leap2a etc
*/
public function set_format_by_intended_file($extn, $extraformats = null)
{
$mimetype = mimeinfo('type', 'something. ' . $extn);
$fileformat = portfolio_format_from_mimetype($mimetype);
$this->intendedmimetype = $fileformat;
if (is_string($extraformats)) {
$extraformats = array($extraformats);
} else {
if (!is_array($extraformats)) {
$extraformats = array();
}
}
$this->set_formats(array_merge(array($fileformat), $extraformats));
}
