How is the `is_disable_inheritance` property (getIsDisableInheritance method) used for a configuration field?

dmitry_fedyuk · October 14, 2017, 6:38pm

Context: Magento 2.2 hides the «ADVANCED» → «System» and «ADVANCED» → «Developer» menu items in the production mode

###\Magento\Config\Block\System\Config\Form\Field::_renderInheritCheckbox()

magento/magento2/blob/2.2.0/app/code/Magento/Config/Block/System/Config/Form/Field.php#L87-L115


/**
 * Render inheritance checkbox (Use Default or Use Website)
 *
 * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
 * @return string
 */
protected function _renderInheritCheckbox(\Magento\Framework\Data\Form\Element\AbstractElement $element)
{
    $htmlId = $element->getHtmlId();
    $namePrefix = preg_replace('#\[value\](\[\])?$#', '', $element->getName());
    $checkedHtml = $element->getInherit() == 1 ? 'checked="checked"' : '';
    $disabled = $element->getIsDisableInheritance() == true ? ' disabled="disabled"' : '';


    $html = '<td class="use-default">';
    $html .= '<input id="' .
        $htmlId .
        '_inherit" name="' .
        $namePrefix .
        '[inherit]" type="checkbox" value="1"' .
        ' class="checkbox config-inherit" ' .
        $checkedHtml . $disabled .
        ' onclick="toggleValueElements(this, Element.previous(this.parentNode))" /> ';
    $html .= '<label for="' . $htmlId . '_inherit" class="inherit">' . $this->_getInheritCheckboxLabel(
        $element
    ) . '</label>';
    $html .= '</td>';


    return $html;
}