ENGCOM-1994: [Forwardport] Improve retrieval of first array element #16121

Author: Stanislav Idolov

app/code/Magento/Rule/Model/Action/AbstractAction.php

@@ -49,13 +49,16 @@ public function __construct(
 
         $this->loadAttributeOptions()->loadOperatorOptions()->loadValueOptions();
 
-        foreach (array_keys($this->getAttributeOption()) as $attr) {
-            $this->setAttribute($attr);
-            break;
+        $attributes = $this->getAttributeOption();
+        if ($attributes) {
+            reset($attributes);
+            $this->setAttribute(key($attributes));
         }
-        foreach (array_keys($this->getOperatorOption()) as $operator) {
-            $this->setOperator($operator);
-            break;
+
+        $operators = $this->getOperatorOption();
+        if ($operators) {
+            reset($operators);
+            $this->setOperator(key($operators));
         }
     }
 

app/code/Magento/Rule/Model/Condition/Combine.php

@@ -46,10 +46,8 @@ public function __construct(Context $context, array $data = [])
         $this->loadAggregatorOptions();
         $options = $this->getAggregatorOptions();
         if ($options) {
-            foreach (array_keys($options) as $aggregator) {
-                $this->setAggregator($aggregator);
-                break;
-            }
+            reset($options);
+            $this->setAggregator(key($options));
         }
     }
 
@@ -90,9 +88,10 @@ public function getAggregatorName()
     public function getAggregatorElement()
     {
         if ($this->getAggregator() === null) {
-            foreach (array_keys($this->getAggregatorOption()) as $key) {
-                $this->setAggregator($key);
-                break;
+            $options = $this->getAggregatorOption();
+            if ($options) {
+                reset($options);
+                $this->setAggregator(key($options));
             }
         }
         return $this->getForm()->addField(