Regla de condición de adición de Magento en un formulario personalizado en magento 2

Quiero agregar acción de condición en el formulario de administración del módulo personalizado. ¿Cómo puedo conseguir esto?

Enlace de referencia para Magento 1.9

Reemplazo del enlace anterior para Magento 2.

Para agregar un campo condicional al modelo predeterminado (y utilizarlo aún más para fines de validación), deberá crear un nuevo modelo (o modificar el existente) que contenga estos campos.

app / code / Vendor / Rules / Setup / InstallSchema.php

<?php

namespace Vendor\Rules\Setup;

use Magento\Framework\DB\Ddl\Table;
use Magento\Framework\Setup\InstallSchemaInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\SchemaSetupInterface;

class InstallSchema implements InstallSchemaInterface
{

    public function install(SchemaSetupInterface $setup, ModuleContextInterface $context)
    {
        $installer = $setup;
        $installer->startSetup();

        $table = $installer->getConnection()->newTable(
            $installer->getTable('vendor_rules')
        )->addColumn(
            'rule_id',
            Table::TYPE_INTEGER,
            null,
            ['identity' => true, 'unsigned' => true, 'nullable' => false, 'primary' => true],
            'Rule Id'
        )->addColumn(
            'name',
            Table::TYPE_TEXT,
            255,
            [],
            'Name'
        )->addColumn(
            'description',
            Table::TYPE_TEXT,
            '64k',
            [],
            'Description'
        )->addColumn(
            'from_date',
            Table::TYPE_DATE,
            null,
            ['nullable' => true, 'default' => null],
            'From'
        )->addColumn(
            'to_date',
            Table::TYPE_DATE,
            null,
            ['nullable' => true, 'default' => null],
            'To'
        )->addColumn(
            'is_active',
            Table::TYPE_SMALLINT,
            null,
            ['nullable' => false, 'default' => '0'],
            'Is Active'
        )->addColumn(
            'conditions_serialized',
            Table::TYPE_TEXT,
            '2M',
            [],
            'Conditions Serialized'
        )->addColumn(
            'sort_order',
            Table::TYPE_INTEGER,
            null,
            ['unsigned' => true, 'nullable' => false, 'default' => '0'],
            'Sort Order (Priority)'
        )->addIndex(
            $installer->getIdxName('vendor_rules', ['sort_order', 'is_active', 'to_date', 'from_date']),
            ['sort_order', 'is_active', 'to_date', 'from_date']
        )->setComment(
            'Own Rules'
        );

        $installer->getConnection()->createTable($table);
        $installer->endSetup();
    }
}

Ahora, tenemos una tabla con la descripción del modelo y necesitamos completar el modelo en sí mismo e incluir en él el modelo y la colección de recursos apropiados.

El modelo se llamará 'Regla':

app / code / Vendor / Rules / Model / Rule.php

<?php

namespace Vendor\Rules\Model;

use Magento\Quote\Model\Quote\Address;
use Magento\Rule\Model\AbstractModel;

/**
 * Class Rule
 * @package Vendor\Rules\Model
 *
 * @method int|null getRuleId()
 * @method Rule setRuleId(int $id)
 */
class Rule extends AbstractModel
{
    /**
     * Prefix of model events names
     *
     * @var string
     */
    protected $_eventPrefix = 'vendor_rules';

    /**
     * Parameter name in event
     *
     * In observe method you can use $observer->getEvent()->getRule() in this case
     *
     * @var string
     */
    protected $_eventObject = 'rule';

    /** @var \Magento\SalesRule\Model\Rule\Condition\CombineFactory */
    protected $condCombineFactory;

    /** @var \Magento\SalesRule\Model\Rule\Condition\Product\CombineFactory */
    protected $condProdCombineF;

    /**
     * Store already validated addresses and validation results
     *
     * @var array
     */
    protected $validatedAddresses = [];

    /**
     * @param \Magento\Framework\Model\Context $context
     * @param \Magento\Framework\Registry $registry
     * @param \Magento\Framework\Data\FormFactory $formFactory
     * @param \Magento\Framework\Stdlib\DateTime\TimezoneInterface $localeDate
     * @param \Magento\SalesRule\Model\Rule\Condition\CombineFactory $condCombineFactory
     * @param \Magento\SalesRule\Model\Rule\Condition\Product\CombineFactory $condProdCombineF
     * @param \Magento\Framework\Model\ResourceModel\AbstractResource $resource
     * @param \Magento\Framework\Data\Collection\AbstractDb $resourceCollection
     * @param array $data
     * @SuppressWarnings(PHPMD.ExcessiveParameterList)
     */
    public function __construct(
        \Magento\Framework\Model\Context $context,
        \Magento\Framework\Registry $registry,
        \Magento\Framework\Data\FormFactory $formFactory,
        \Magento\Framework\Stdlib\DateTime\TimezoneInterface $localeDate,
        \Magento\SalesRule\Model\Rule\Condition\CombineFactory $condCombineFactory,
        \Magento\SalesRule\Model\Rule\Condition\Product\CombineFactory $condProdCombineF,
        \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
        \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
        array $data = []
    ) {
        $this->condCombineFactory = $condCombineFactory;
        $this->condProdCombineF = $condProdCombineF;
        parent::__construct($context, $registry, $formFactory, $localeDate, $resource, $resourceCollection, $data);
    }

    /**
     * Set resource model and Id field name
     *
     * @return void
     */
    protected function _construct()
    {
        parent::_construct();
        $this->_init('Vendor\Rules\Model\ResourceModel\Rule');
        $this->setIdFieldName('rule_id');
    }

    /**
     * Get rule condition combine model instance
     *
     * @return \Magento\SalesRule\Model\Rule\Condition\Combine
     */
    public function getConditionsInstance()
    {
        return $this->condCombineFactory->create();
    }

    /**
     * Get rule condition product combine model instance
     *
     * @return \Magento\SalesRule\Model\Rule\Condition\Product\Combine
     */
    public function getActionsInstance()
    {
        return $this->condProdCombineF->create();
    }

    /**
     * Check cached validation result for specific address
     *
     * @param Address $address
     * @return bool
     */
    public function hasIsValidForAddress($address)
    {
        $addressId = $this->_getAddressId($address);
        return isset($this->validatedAddresses[$addressId]) ? true : false;
    }

    /**
     * Set validation result for specific address to results cache
     *
     * @param Address $address
     * @param bool $validationResult
     * @return $this
     */
    public function setIsValidForAddress($address, $validationResult)
    {
        $addressId = $this->_getAddressId($address);
        $this->validatedAddresses[$addressId] = $validationResult;
        return $this;
    }

    /**
     * Get cached validation result for specific address
     *
     * @param Address $address
     * @return bool
     * @SuppressWarnings(PHPMD.BooleanGetMethodName)
     */
    public function getIsValidForAddress($address)
    {
        $addressId = $this->_getAddressId($address);
        return isset($this->validatedAddresses[$addressId]) ? $this->validatedAddresses[$addressId] : false;
    }

    /**
     * Return id for address
     *
     * @param Address $address
     * @return string
     */
    private function _getAddressId($address)
    {
        if ($address instanceof Address) {
            return $address->getId();
        }
        return $address;
    }
}

Como puede ver, nuestro modelo hereda del Magento\Rule\Model\AbstractModelmodelo que ya tiene todos los métodos requeridos.

Justo en el Constructor, agregaremos fábricas de condiciones que nos permiten trabajar con ellas y crear múltiples métodos. Esto debería darnos la comprensión de cómo funciona el modelo.

Tenga en cuenta que estamos utilizando los modelos de condición predeterminados del \Magento\SalesRule\Model\Rule\Conditionmódulo Magento SalesRule ( ). Si necesita expandir las condiciones, puede agregar sus propias clases y / o reescribirlas completamente o heredar de las clases base disponibles. Puede ser útil cuando desea agregar una condición especial que no está incluida en las condiciones predeterminadas. Por ejemplo, Subtotal con descuento .

....

A continuación, cambiemos a la interfaz en el panel de administración. Necesitamos el controlador con un conjunto de acciones (como Guardar, Agregar, Editar, Mostrar cuadrícula, Recargar condiciones) y un diseño con bloques.

Comencemos con el controlador en sí. Primero, declare el controlador común:

app / code / Vendor / Rules / Controller / Adminhtml / Example / Rule.php

<?php

namespace Vendor\Rules\Controller\Adminhtml\Example;

abstract class Rule extends \Magento\Backend\App\Action
{
    /**
     * Core registry
     *
     * @var \Magento\Framework\Registry
     */
    protected $coreRegistry = null;

    /**
     * @var \Magento\Framework\App\Response\Http\FileFactory
     */
    protected $fileFactory;

    /**
     * @var \Magento\Framework\Stdlib\DateTime\Filter\Date
     */
    protected $dateFilter;

    /**
     * @var \Vendor\Rules\Model\RuleFactory
     */
    protected $ruleFactory;

    /**
     * @var \Psr\Log\LoggerInterface
     */
    protected $logger;

    /**
     * @param \Magento\Backend\App\Action\Context $context
     * @param \Magento\Framework\Registry $coreRegistry
     * @param \Magento\Framework\App\Response\Http\FileFactory $fileFactory
     * @param \Magento\Framework\Stdlib\DateTime\Filter\Date $dateFilter
     * @param \Vendor\Rules\Model\RuleFactory $ruleFactory
     * @param \Psr\Log\LoggerInterface $logger
     */
    public function __construct(
        \Magento\Backend\App\Action\Context $context,
        \Magento\Framework\Registry $coreRegistry,
        \Magento\Framework\App\Response\Http\FileFactory $fileFactory,
        \Magento\Framework\Stdlib\DateTime\Filter\Date $dateFilter,
        \Vendor\Rules\Model\RuleFactory $ruleFactory,
        \Psr\Log\LoggerInterface $logger
    ) {
        parent::__construct($context);
        $this->coreRegistry = $coreRegistry;
        $this->fileFactory = $fileFactory;
        $this->dateFilter = $dateFilter;
        $this->ruleFactory = $ruleFactory;
        $this->logger = $logger;
    }

    /**
     * Initiate rule
     *
     * @return void
     */
    protected function _initRule()
    {
        $rule = $this->ruleFactory->create();
        $this->coreRegistry->register(
            'current_rule',
            $rule
        );
        $id = (int)$this->getRequest()->getParam('id');

        if (!$id && $this->getRequest()->getParam('rule_id')) {
            $id = (int)$this->getRequest()->getParam('rule_id');
        }

        if ($id) {
            $this->coreRegistry->registry('current_rule')->load($id);
        }
    }

    /**
     * Initiate action
     *
     * @return Rule
     */
    protected function _initAction()
    {
        $this->_view->loadLayout();
        $this->_setActiveMenu('Vendor_Rules::vendor_rules')
            ->_addBreadcrumb(__('Example Rules'), __('Example Rules'));
        return $this;
    }

    /**
     * Returns result of current user permission check on resource and privilege
     *
     * @return bool
     */
    protected function _isAllowed()
    {
        return $this->_authorization->isAllowed('Vendor_Rules::rules');
    }
}

Aquí, debemos llamar a la fábrica de nuestros modelos en el Constructor. Esto se hace para que estén disponibles públicamente (y algunas clases auxiliares, como un registro y un registrador).

El _initRulemétodo es responsable de la inicialización de la regla actual o de la creación de una nueva y vacía con la capacidad de agregarla al registro. El _initAction()método carga un diseño y hace que el menú de los módulos esté disponible para acciones (además, agrega panzas). El _isAllowed()método verifica si el administrador actual tiene acceso al controlador.

En el siguiente paso, agregaremos las acciones predeterminadas:

....

Edición:

app / code / Vendor / Rules / Controller / Adminhtml / Example / Rule / Edit.php

<?php

namespace Vendor\Rules\Controller\Adminhtml\Example\Rule;

class Edit extends \Vendor\Rules\Controller\Adminhtml\Example\Rule
{
    /**
     * Rule edit action
     *
     * @return void
     */
    public function execute()
    {
        $id = $this->getRequest()->getParam('id');
        /** @var \Vendor\Rules\Model\Rule $model */
        $model = $this->ruleFactory->create();

        if ($id) {
            $model->load($id);
            if (!$model->getRuleId()) {
                $this->messageManager->addErrorMessage(__('This rule no longer exists.'));
                $this->_redirect('vendor_rules/*');
                return;
            }
        }

        // set entered data if was error when we do save
        $data = $this->_session->getPageData(true);
        if (!empty($data)) {
            $model->addData($data);
        }

        $model->getConditions()->setJsFormObject('rule_conditions_fieldset');

        $this->coreRegistry->register('current_rule', $model);

        $this->_initAction();
        $this->_view->getLayout()
            ->getBlock('example_rule_edit')
            ->setData('action', $this->getUrl('vendor_rules/*/save'));

        $this->_addBreadcrumb($id ? __('Edit Rule') : __('New Rule'), $id ? __('Edit Rule') : __('New Rule'));

        $this->_view->getPage()->getConfig()->getTitle()->prepend(
            $model->getRuleId() ? $model->getName() : __('New Rule')
        );
        $this->_view->renderLayout();
    }
}

Así es como agregar nuevas condiciones:

app / code / Vendor / Rules / Controller / Adminhtml / Example / Rule / NewConditionHtml.php

<?php

namespace Vendor\Rules\Controller\Adminhtml\Example\Rule;

class NewConditionHtml extends \Vendor\Rules\Controller\Adminhtml\Example\Rule
{
    /**
     * New condition html action
     *
     * @return void
     */
    public function execute()
    {
        $id = $this->getRequest()->getParam('id');
        $typeArr = explode('|', str_replace('-', '/', $this->getRequest()->getParam('type')));
        $type = $typeArr[0];

        $model = $this->_objectManager->create(
            $type
        )->setId(
            $id
        )->setType(
            $type
        )->setRule(
            $this->ruleFactory->create()
        )->setPrefix(
            'conditions'
        );
        if (!empty($typeArr[1])) {
            $model->setAttribute($typeArr[1]);
        }

        if ($model instanceof \Magento\Rule\Model\Condition\AbstractCondition) {
            $model->setJsFormObject($this->getRequest()->getParam('form'));
            $html = $model->asHtmlRecursive();
        } else {
            $html = '';
        }
        $this->getResponse()->setBody($html);
    }
}

Esta clase es responsable de cargar las condiciones que se han elegido en la interfaz (no se pueden cargar todas las condiciones a la vez).

....

A continuación, necesitamos crear todos los bloques y el diseño necesarios.

Ahora, vamos a crear y editar nuevas reglas. Creemos el bloque contenedor principal para editar:

app / code / Vendor / Rules / Block / Adminhtml / Example / Rule / Edit.php

<?php

namespace Vendor\Rules\Block\Adminhtml\Example\Rule;

class Edit extends \Magento\Backend\Block\Widget\Form\Container
{
    /**
     * Core registry
     *
     * @var \Magento\Framework\Registry
     */
    protected $coreRegistry = null;

    /**
     * @param \Magento\Backend\Block\Widget\Context $context
     * @param \Magento\Framework\Registry $registry
     * @param array $data
     */
    public function __construct(
        \Magento\Backend\Block\Widget\Context $context,
        \Magento\Framework\Registry $registry,
        array $data = []
    ) {
        $this->coreRegistry = $registry;
        parent::__construct($context, $data);
    }

    /**
     * Initialize form
     * Add standard buttons
     * Add "Save and Continue" button
     *
     * @return void
     */
    protected function _construct()
    {
        $this->_objectId = 'id';
        $this->_controller = 'adminhtml_example_rule';
        $this->_blockGroup = 'Vendor_Rules';

        parent::_construct();

        $this->buttonList->add(
            'save_and_continue_edit',
            [
                'class' => 'save',
                'label' => __('Save and Continue Edit'),
                'data_attribute' => [
                    'mage-init' => ['button' => ['event' => 'saveAndContinueEdit', 'target' => '#edit_form']],
                ]
            ],
            10
        );
    }

    /**
     * Getter for form header text
     *
     * @return \Magento\Framework\Phrase
     */
    public function getHeaderText()
    {
        $rule = $this->coreRegistry->registry('current_rule');
        if ($rule->getRuleId()) {
            return __("Edit Rule '%1'", $this->escapeHtml($rule->getName()));
        } else {
            return __('New Rule');
        }
    }

}

Cuando termine, debemos agregar el título de los controladores y los botones savey edit current modelen el Constructor. Además, aquí debe agregar el texto principal del bloque.

Este es un formulario en sí mismo:

app / code / Vendor / Rules / Block / Adminhtml / Example / Rule / Edit / Form.php

<?php

namespace Vendor\Rules\Block\Adminhtml\Example\Rule\Edit;

class Form extends \Magento\Backend\Block\Widget\Form\Generic
{
    /**
     * Constructor
     *
     * @return void
     */
    protected function _construct()
    {
        parent::_construct();
        $this->setId('example_rule_form');
        $this->setTitle(__('Rule Information'));
    }

    /**
     * Prepare form before rendering HTML
     *
     * @return \Magento\Backend\Block\Widget\Form\Generic
     */
    protected function _prepareForm()
    {
        /** @var \Magento\Framework\Data\Form $form */
        $form = $this->_formFactory->create(
            [
                'data' => [
                    'id' => 'edit_form',
                    'action' => $this->getUrl('vendor_rules/example_rule/save'),
                    'method' => 'post',
                ],
            ]
        );
        $form->setUseContainer(true);
        $this->setForm($form);
        return parent::_prepareForm();
    }
}

y pestañas:

app / code / Vendor / Rules / Block / Adminhtml / Example / Rule / Edit / Tabs.php

<?php

namespace Vendor\Rules\Block\Adminhtml\Example\Rule\Edit;

class Tabs extends \Magento\Backend\Block\Widget\Tabs
{
    /**
     * Constructor
     *
     * @return void
     */
    protected function _construct()
    {
        parent::_construct();
        $this->setId('rules_edit_tabs');
        $this->setDestElementId('edit_form');
        $this->setTitle(__('Rules'));
    }
}

Tendremos las dos pestañas: Información y condiciones del modelo Ceneral.

app / code / Vendor / Rules / Block / Adminhtml / Example / Rule / Edit / Tab / Main.php

<?php

namespace Vendor\Rules\Block\Adminhtml\Example\Rule\Edit\Tab;

use Magento\Backend\Block\Template\Context;
use Magento\Backend\Block\Widget\Form\Generic;
use Magento\Backend\Block\Widget\Tab\TabInterface;
use Magento\Framework\Data\FormFactory;
use Magento\Framework\Registry;

class Main extends Generic implements TabInterface
{

    /**
     * Constructor
     *
     * @param Context $context
     * @param Registry $registry
     * @param FormFactory $formFactory
     * @param array $data
     */
    public function __construct(
        Context $context,
        Registry $registry,
        FormFactory $formFactory,
        array $data = []
    ) {
        parent::__construct($context, $registry, $formFactory, $data);
    }

    /**
     * {@inheritdoc}
     */
    public function getTabLabel()
    {
        return __('Rule Information');
    }

    /**
     * {@inheritdoc}
     */
    public function getTabTitle()
    {
        return __('Rule Information');
    }

    /**
     * {@inheritdoc}
     */
    public function canShowTab()
    {
        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function isHidden()
    {
        return false;
    }

    /**
     * Prepare form before rendering HTML
     *
     * @return Generic
     */
    protected function _prepareForm()
    {
        $model = $this->_coreRegistry->registry('current_rule');

        /** @var \Magento\Framework\Data\Form $form */
        $form = $this->_formFactory->create();
        $form->setHtmlIdPrefix('rule_');

        $fieldset = $form->addFieldset('base_fieldset', ['legend' => __('General Information')]);

        if ($model->getId()) {
            $fieldset->addField('rule_id', 'hidden', ['name' => 'rule_id']);
        }

        $fieldset->addField(
            'name',
            'text',
            ['name' => 'name', 'label' => __('Rule Name'), 'title' => __('Rule Name'), 'required' => true]
        );

        $fieldset->addField(
            'description',
            'textarea',
            [
                'name' => 'description',
                'label' => __('Description'),
                'title' => __('Description'),
                'style' => 'height: 100px;'
            ]
        );

        $fieldset->addField(
            'is_active',
            'select',
            [
                'label' => __('Status'),
                'title' => __('Status'),
                'name' => 'is_active',
                'required' => true,
                'options' => ['1' => __('Active'), '0' => __('Inactive')]
            ]
        );

        if (!$model->getId()) {
            $model->setData('is_active', '1');
        }

        $fieldset->addField('sort_order', 'text', ['name' => 'sort_order', 'label' => __('Priority')]);

        $dateFormat = $this->_localeDate->getDateFormat(\IntlDateFormatter::SHORT);
        $fieldset->addField(
            'from_date',
            'date',
            [
                'name' => 'from_date',
                'label' => __('From'),
                'title' => __('From'),
                'input_format' => \Magento\Framework\Stdlib\DateTime::DATE_INTERNAL_FORMAT,
                'date_format' => $dateFormat
            ]
        );
        $fieldset->addField(
            'to_date',
            'date',
            [
                'name' => 'to_date',
                'label' => __('To'),
                'title' => __('To'),
                'input_format' => \Magento\Framework\Stdlib\DateTime::DATE_INTERNAL_FORMAT,
                'date_format' => $dateFormat
            ]
        );

        $form->setValues($model->getData());

        if ($model->isReadonly()) {
            foreach ($fieldset->getElements() as $element) {
                $element->setReadonly(true, true);
            }
        }

        $this->setForm($form);

        $this->_eventManager->dispatch('adminhtml_example_rule_edit_tab_main_prepare_form', ['form' => $form]);

        return parent::_prepareForm();
    }
}

Condiciones:

aplicación / código / Proveedor / Reglas / Bloquear / Adminhtml / Ejemplo / Regla / Editar / Tabulación / Condiciones.php

<?php

namespace Vendor\Rules\Block\Adminhtml\Example\Rule\Edit\Tab;

use Magento\Backend\Block\Widget\Form\Generic;
use Magento\Backend\Block\Widget\Tab\TabInterface;

class Conditions extends Generic implements TabInterface
{
    /**
     * Core registry
     *
     * @var \Magento\Backend\Block\Widget\Form\Renderer\Fieldset
     */
    protected $rendererFieldset;

    /**
     * @var \Magento\Rule\Block\Conditions
     */
    protected $conditions;

    /**
     * @param \Magento\Backend\Block\Template\Context $context
     * @param \Magento\Framework\Registry $registry
     * @param \Magento\Framework\Data\FormFactory $formFactory
     * @param \Magento\Rule\Block\Conditions $conditions
     * @param \Magento\Backend\Block\Widget\Form\Renderer\Fieldset $rendererFieldset
     * @param array $data
     */
    public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Framework\Registry $registry,
        \Magento\Framework\Data\FormFactory $formFactory,
        \Magento\Rule\Block\Conditions $conditions,
        \Magento\Backend\Block\Widget\Form\Renderer\Fieldset $rendererFieldset,
        array $data = []
    ) {
        $this->rendererFieldset = $rendererFieldset;
        $this->conditions = $conditions;
        parent::__construct($context, $registry, $formFactory, $data);
    }

    /**
     * {@inheritdoc}
     */
    public function getTabLabel()
    {
        return __('Conditions');
    }

    /**
     * {@inheritdoc}
     */
    public function getTabTitle()
    {
        return __('Conditions');
    }

    /**
     * {@inheritdoc}
     */
    public function canShowTab()
    {
        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function isHidden()
    {
        return false;
    }

    /**
     * Prepare form before rendering HTML
     *
     * @return Generic
     */
    protected function _prepareForm()
    {
        $model = $this->_coreRegistry->registry('current_rule');

        /** @var \Magento\Framework\Data\Form $form */
        $form = $this->_formFactory->create();
        $form->setHtmlIdPrefix('rule_');

        $renderer = $this->rendererFieldset->setTemplate(
            'Magento_CatalogRule::promo/fieldset.phtml'
        )->setNewChildUrl(
            $this->getUrl('vendor_rules/example_rule/newConditionHtml/form/rule_conditions_fieldset')
        );

        $fieldset = $form->addFieldset(
            'conditions_fieldset',
            [
                'legend' => __(
                    'Apply the rule only if the following conditions are met (leave blank for all products).'
                )
            ]
        )->setRenderer(
            $renderer
        );

        $fieldset->addField(
            'conditions',
            'text',
            ['name' => 'conditions', 'label' => __('Conditions'), 'title' => __('Conditions')]
        )->setRule(
            $model
        )->setRenderer(
            $this->conditions
        );

        $form->setValues($model->getData());
        $this->setForm($form);

        return parent::_prepareForm();
    }
}

Para ver más detalles, siga este enlace .

Usando el componente UI para Magento2.1

<fieldset name = "condiciones">
    <argumento name = "data" xsi: type = "array">
        <item name = "config" xsi: type = "array">
            <item name = "label" xsi: type = "string" translate = "true"> Condiciones </item>
            <item name = "collapsible" xsi: type = "boolean"> true </item>
            <item name = "sortOrder" xsi: type = "number"> 20 </item>
        </item>
    </argument>
    <container name = "condition_apply_to">
        <argumento name = "data" xsi: type = "array">
            <item name = "config" xsi: type = "array">
                <item name = "sortOrder" xsi: type = "number"> 10 </item>
            </item>
        </argument>
        <htmlContent name = "html_content">
            <argumento name = "block" xsi: type = "object"> Magento \ SalesRule \ Block \ Adminhtml \ Promo \ Quote \ Edit \ Tab \ Condiciones </argument>
        </htmlContent>
    </container>
</fieldset>