How to add catalog price rule condition in magento2

Question

I have added to custom module to add catalog price rule condition. how to Add Rule Condition in My custom module, I have also added Rule file and Condition.

$renderer = $this->_rendererFieldset->setTemplate('Emipro_Seo::promo/fieldset.phtml')->setNewChildUrl($this->getUrl('catalog_rule/promo_catalog/newConditionHtml/form/rule_conditions_fieldset'));
        $fieldset = $form->addFieldset(
            'conditions_fieldset',
            ['legend' => __('Conditions (don\'t add conditions if rule is applied to all products)')]
        )->setRenderer($renderer);

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

Answer 1

Setep: 1. Add this file in Block folder

Vender\Module\Block\Adminhtml\Index\Edit\Tab

namespace Vender\Module\Block\Adminhtml\Index\Edit\Tab;

use Magento\Framework\App\ObjectManager;
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;

    private $ruleFactory;

    /**
     * Initialize dependencies.
     *
     * @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);
    }


    private function getRuleFactory()
    {
        if ($this->ruleFactory === null) {
            $this->ruleFactory = ObjectManager::getInstance()->get('Magento\CatalogRule\Model\RuleFactory');
        }
        return $this->ruleFactory;
    }

    /**
     * {@inheritdoc}
     * @codeCoverageIgnore
     */
    public function getTabClass()
    {
        return null;
    }



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

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

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

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

    protected function _prepareForm()
    {
        $model = $this->_coreRegistry->registry('\Magento\CatalogRule\Controller\RegistryConstants::CURRENT_CATALOG_RULE_ID');

        if (!$model) {
            $id = $this->getRequest()->getParam('rule_id');
            $model = $this->getRuleFactory()->create();
            $model->load($id);
        }
        $fieldsetId = 'conditions_fieldset';
        $formName = 'catalog_rule_form';

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

        $newChildUrl = $this->getUrl(
            'catalog_rule/promo_catalog/newConditionHtml/form/' . $model->getConditionsFieldSetId($formName),
            ['form_namespace' => $formName]
        );

        $renderer = $this->_rendererFieldset->setTemplate('Magento_CatalogRule::promo/fieldset.phtml')
                            ->setNewChildUrl($newChildUrl)
                            ->setFieldSetId($model->getConditionsFieldSetId($formName));

        $fieldset = $form->addFieldset(
            $fieldsetId,
            [
                '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());
        $this->setConditionFormName($model->getConditions(), $formName);
        $this->setForm($form);

        return parent::_prepareForm();
    }

}

Step: 2 Add this code in layout edit file

frontendname_index_edit.xml

<referenceContainer name="left">
        <block class="Vender\Module\Block\Adminhtml\Chartlist\Edit\Tabs" name="vender_module_edit_tabs">
            <block class="Vender\Module\Block\Adminhtml\Chartlist\Edit\Tab\Conditions" name="vender_module_tab_conditions"/>
            <action method="addTab">
                <argument name="name" xsi:type="string">conditions_section</argument>
                <argument name="block" xsi:type="string">vender_module_tab_conditions</argument>
            </action>
        </block>
    </referenceContainer>