public function get_data() {
		$data        = array(
			$this->slug => null,
		);
		$submit_data = uix()->request_vars( 'post' );
		$id = $this->id();
		if ( isset( $submit_data[ $id ] ) ) {
			$this->data[ $id ][ $this->slug ] = $submit_data[ $id ];
		}
		if ( isset( $this->data[ $id ] ) ) {
			$data = $this->data[ $id ];
		}

		return $data;
	}