Controller for the forms

public function form($id = NULL)
    {
        if ($this->input->post('btn_cancel'))
        {
            redirect('portlets');
        }

        if ($this->wc_portlets->run_validation())
        {
            $id = $this->wc_portlets->save($id);
            redirect('portlets/index/' . $id);

        }

        if ($id and !$this->input->post('btn_submit'))
        {
            $this->wc_portlets->prep_form($id);
        }

        $this->layout->buffer('content', 'portlets/form');
        $this->layout->render();
    }