silverstripe / silverstripe-userforms

     * @param string $toStage

     * @param bool $createNewVersion

     */

    protected function publishRules($fromStage, $toStage, $createNewVersion)

    {

        $seenRuleIDs = array();

        // Don't forget to publish the related custom rules...

        foreach ($this->DisplayRules() as $rule) {

            $seenRuleIDs[] = $rule->ID;

            $rule->doPublish($fromStage, $toStage, $createNewVersion);

            $rule->destroy();

        }

        // remove any orphans from the "fromStage"

        $rules = Versioned::get_by_stage('EditableCustomRule', $toStage)

            ->filter('ParentID', $this->ID);

        if (!empty($seenRuleIDs)) {

            $rules = $rules->exclude('ID', $seenRuleIDs);

        }

        foreach ($rules as $rule) {

            $rule->deleteFromStage($toStage);

        }

    }

    /**

     * Delete this field from a given stage

     * @param string $toStage

     * @param bool $createNewVersion

     */

    protected function publishOptions($fromStage, $toStage, $createNewVersion)

    {

        $seenIDs = array();

        // Publish all options

        foreach ($this->Options() as $option) {

            $seenIDs[] = $option->ID;

            $option->publish($fromStage, $toStage, $createNewVersion);

        }

        // remove any orphans from the "fromStage"

        $options = Versioned::get_by_stage('EditableOption', $toStage)

            ->filter('ParentID', $this->ID);

        if (!empty($seenIDs)) {

            $options = $options->exclude('ID', $seenIDs);

        }

        foreach ($options as $rule) {

            $rule->deleteFromStage($toStage);

        }

    }

    /**

     * Unpublishing Versioning support