From 09ed619adf73a7be265297686695e0a011a4b0cc Mon Sep 17 00:00:00 2001
From: Valerij Ivashchenko <likemusic@yandex.ru>
Date: Mon, 11 Jun 2018 15:47:43 +0300
Subject: [PATCH 1/2] small refactoring to better code readability

---
 .../Block/Widget/Form/Element/Dependence.php  | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php b/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php
index 723deab1e9f7e..c3f83e06858d8 100644
--- a/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php
+++ b/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php
@@ -124,14 +124,17 @@ protected function _toHtml()
         if (!$this->_depends) {
             return '';
         }
-        return '<script>
-            require(["mage/adminhtml/form"], function(){
-        new FormElementDependenceController(' .
-            $this->_getDependsJson() .
-            ($this->_configOptions ? ', ' .
-            $this->_jsonEncoder->encode(
-                $this->_configOptions
-            ) : '') . '); });</script>';
+
+        $dependsJson = $this->_getDependsJson();
+        $configOptions = $this->_configOptions ? $this->_jsonEncoder->encode($this->_configOptions) : null;
+        $configOptionsStr = $configOptions ? ', ' . $configOptions : '';
+        $paramsStr = $dependsJson . $configOptionsStr;
+
+        return "<script>
+    require(['mage/adminhtml/form'], function(){
+    new FormElementDependenceController({$paramsStr});
+});
+</script>";
     }
 
     /**

From 717688e7be19d3b29a4c005b71807a55d1101723 Mon Sep 17 00:00:00 2001
From: Valerij Ivashchenko <likemusic@yandex.ru>
Date: Tue, 12 Jun 2018 10:57:28 +0300
Subject: [PATCH 2/2] improve params string creation according to @orlangur
 suggestion

---
 .../Block/Widget/Form/Element/Dependence.php        | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php b/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php
index c3f83e06858d8..eff49c3b75ab2 100644
--- a/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php
+++ b/app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php
@@ -125,14 +125,15 @@ protected function _toHtml()
             return '';
         }
 
-        $dependsJson = $this->_getDependsJson();
-        $configOptions = $this->_configOptions ? $this->_jsonEncoder->encode($this->_configOptions) : null;
-        $configOptionsStr = $configOptions ? ', ' . $configOptions : '';
-        $paramsStr = $dependsJson . $configOptionsStr;
+        $params = $this->_getDependsJson();
+
+        if ($this->_configOptions) {
+            $params .= ', ' .  $this->_jsonEncoder->encode($this->_configOptions);
+        }
 
         return "<script>
-    require(['mage/adminhtml/form'], function(){
-    new FormElementDependenceController({$paramsStr});
+require(['mage/adminhtml/form'], function(){
+    new FormElementDependenceController({$params});
 });
 </script>";
     }