src/Models/Appointment.php
public function doHash()
    {
        return $this->attributes['hash'] = md5(
            $this->start_at.'/'.
            $this->contact_id.'/'.
            $this->business_id.'/'.
            $this->service_id
        );
    }
public function doHash()
    {
        return $this->attributes['hash'] = md5(
            $this->start_at.'/'.
            $this->contact_id.'/'.
            $this->business_id.'/'.
            $this->service_id
        );
    }
public function doHash ( ) { return $ this -> attributes [ 'hash' ] = md5 ( $ this -> start_at . '/' . $ this -> contact_id . '/' . $ this -> business_id . '/' . $ this -> service_id ) ; }
Generate Appointment hash.

@return string
Generate Appointment hash .