$field->assigned_cat_ids may not exist.

Thomas Hunziker · Thomas Hunziker · commit 00db89cef9c7 · 2017-01-12T09:45:27.000+01:00
diff --git a/administrator/components/com_fields/helpers/fields.php b/administrator/components/com_fields/helpers/fields.php
@@ -450,7 +450,7 @@ public static function prepareForm($context, JForm $form, $data)
 					 * If the field belongs to an assigned_cat_id but the assigned_cat_ids in the data
 					 * is not known, set the required flag to false on any circumstance.
 					 */
-					if (! $assignedCatids && $field->assigned_cat_ids && $form->getField($field->alias))
+					if (!$assignedCatids && !empty($field->assigned_cat_ids) && $form->getField($field->alias))
 					{
 						$form->setFieldAttribute($field->alias, 'required', 'false');
 					}

Original file line number	Diff line number	Diff line change
`@@ -450,7 +450,7 @@ public static function prepareForm($context, JForm $form, $data)`
`450`	`450`	`* If the field belongs to an assigned_cat_id but the assigned_cat_ids in the data`
`451`	`451`	`* is not known, set the required flag to false on any circumstance.`
`452`	`452`	`*/`
`453`		`- if (! $assignedCatids && $field->assigned_cat_ids && $form->getField($field->alias))`
	`453`	`+ if (!$assignedCatids && !empty($field->assigned_cat_ids) && $form->getField($field->alias))`
`454`	`454`	`{`
`455`	`455`	`$form->setFieldAttribute($field->alias, 'required', 'false');`
`456`	`456`	`}`