symfony
diff --git a/‎src/Symfony/Component/Form/Extension/Core/ChoiceList/ObjectChoiceList.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Form/Extension/Core/ChoiceList/ObjectChoiceList.php
+5-3Lines changed: 5 additions & 3 deletions b/‎src/Symfony/Component/Form/Extension/Core/ChoiceList/ObjectChoiceList.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Form/Extension/Core/ChoiceList/ObjectChoiceList.php
+5-3Lines changed: 5 additions & 3 deletions
@@ -128,11 +128,13 @@ protected function initialize($choices, array $labels, array $preferredChoices)
                 if (null === $group) {
                     $groupedChoices[$i] = $choice;
                 } else {
-                    if (!isset($groupedChoices[$group])) {
-                        $groupedChoices[$group] = array();
+                    $groupName = (string) $group;
+
+                    if (!isset($groupedChoices[$groupName])) {
+                        $groupedChoices[$groupName] = array();
                     }
 
-                    $groupedChoices[$group][$i] = $choice;
+                    $groupedChoices[$groupName][$i] = $choice;
                 }
             }
Original file line number	Diff line number	Diff line change
`@@ -128,11 +128,13 @@ protected function initialize($choices, array $labels, array $preferredChoices)`
`128`	`128`	`if (null === $group) {`
`129`	`129`	`$groupedChoices[$i] = $choice;`
`130`	`130`	`} else {`
`131`		`- if (!isset($groupedChoices[$group])) {`
`132`		`- $groupedChoices[$group] = array();`
	`131`	`+ $groupName = (string) $group;`
	`132`	`+`
	`133`	`+ if (!isset($groupedChoices[$groupName])) {`
	`134`	`+ $groupedChoices[$groupName] = array();`
`133`	`135`	`}`
`134`	`136`
`135`		`- $groupedChoices[$group][$i] = $choice;`
	`137`	`+ $groupedChoices[$groupName][$i] = $choice;`
`136`	`138`	`}`
`137`	`139`	`}`
`138`	`140`