A frontend model should always be a \Magento\Framework\View\Element\AbstractBlock

dmitry_fedyuk (Dmitrii Fediuk) January 11, 2016, 12:39pm 1

github.com

magento/magento2/blob/2.0.0/app/code/Magento/Config/Block/System/Config/Form.php#L317-L319


$fieldRendererClass = $field->getFrontendModel();
if ($fieldRendererClass) {
    $fieldRenderer = $this->_layout->getBlockSingleton($fieldRendererClass);

See How does \Magento\Framework\View\Layout::getBlockSingleton() work?

github.com

magento/magento2/blob/2.0.0/lib/internal/Magento/Framework/View/Layout/Generator/Block.php#L261-L265


if (!$block instanceof \Magento\Framework\View\Element\AbstractBlock) {
    throw new \Magento\Framework\Exception\LocalizedException(
        new \Magento\Framework\Phrase('Invalid block type: %1', [$block])
    );
}

How to use a custom renderer for a form element?

What is the «frontend_model» for a backend configuration form field?

A backend model should always be a \Magento\Framework\Model\AbstractModel

dmitry_fedyuk (Dmitrii Fediuk) January 11, 2016, 12:45pm 2

See also:

A backend model should always be a \Magento\Framework\Model\AbstractModel