MAGETWO-85206: SKUs are unassigned from Catalog Price Rule conditions

Author: Oleksandr Gorkun

app/code/Magento/CatalogRule/Block/Adminhtml/Promo/Catalog/Edit/Tab/Conditions.php

@@ -1,13 +1,15 @@
 <?php
 /**
- * Copyright © 2013-2017 Magento, Inc. All rights reserved.
+ * Copyright © 2013-2018 Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
 namespace Magento\CatalogRule\Block\Adminhtml\Promo\Catalog\Edit\Tab;
 
 use Magento\Backend\Block\Widget\Form;
 use Magento\Backend\Block\Widget\Form\Generic;
 use Magento\Ui\Component\Layout\Tabs\TabInterface;
+use Magento\CatalogRule\Api\Data\RuleInterface;
+use Magento\Rule\Model\Condition\AbstractCondition;
 
 class Conditions extends Generic implements TabInterface
 {
@@ -134,7 +136,7 @@ protected function _prepareForm()
     }
 
     /**
-     * @param \Magento\CatalogRule\Api\Data\RuleInterface $model
+     * @param RuleInterface $model
      * @param string $fieldsetId
      * @param string $formName
      * @return \Magento\Framework\Data\Form
@@ -180,17 +182,23 @@ protected function addTabToForm($model, $fieldsetId = 'conditions_fieldset', $fo
     }
 
     /**
-     * @param \Magento\Rule\Model\Condition\AbstractCondition $conditions
+     * @param RuleInterface $rule
+     * @param AbstractCondition $conditions
      * @param string $formName
      * @return void
      */
-    private function setConditionFormName(\Magento\CatalogRule\Api\Data\RuleInterface $rule, \Magento\Rule\Model\Condition\AbstractCondition $conditions, $formName)
-    {
+    private function setConditionFormName(
+        RuleInterface $rule,
+        AbstractCondition $conditions,
+        $formName
+    ) {
         $conditions->setFormName($formName);
+        //For every fieldset there's a different form object.
         $conditions->setJsFormObject(
             $rule->getConditionsFieldSetId($formName)
         );
-        if ($conditions->getConditions() && is_array($conditions->getConditions())) {
+        $childConditions = $conditions->getCondition();
+        if ($childConditions && is_array($childConditions)) {
             foreach ($conditions->getConditions() as $condition) {
                 $this->setConditionFormName($rule, $condition, $formName);
             }