getMimeType()) { case 'audio/opus': $mimeType = 'audio/opus'; break; case 'audio/vnd.wave': case 'audio/wav': case 'audio/wave': case 'audio/x-wav': case 'audio/x-pn-wav': $mimeType = 'audio/wav'; break; } return $this->accountFile->content_type == $mimeType; } public function message() { return __('The file should have the declared mime-type'); } }