fix(ionView): only $watch attributes if defined

Closes #1216
ionic-team · Apr 29, 2014 · 12e5f6c · 12e5f6c
1 parent 61bab02
commit 12e5f6c
Showing 1 changed file with 12 additions and 8 deletions.
diff --git a/js/angular/directive/view.js b/js/angular/directive/view.js
@@ -59,15 +59,19 @@ IonicModule
 
         }
 
-        $scope.$watch($attr.hideBackButton, function(value) {
-          // Should we hide a back button when this tab is shown
-          navBarCtrl.showBackButton(!value);
-        });
+        if (angular.isDefined($attr.hideBackButton)) {
+          $scope.$watch($attr.hideBackButton, function(value) {
+            // Should we hide a back button when this tab is shown
+            navBarCtrl.showBackButton(!value);
+          });
+        }
 
-        $scope.$watch($attr.hideNavBar, function(value) {
-          // Should the nav bar be hidden for this view or not?
-          navBarCtrl.showBar(!value);
-        });
+        if (angular.isDefined($attr.hideNavBar)) {
+          $scope.$watch($attr.hideNavBar, function(value) {
+            // Should the nav bar be hidden for this view or not?
+            navBarCtrl.showBar(!value);
+          });
+        }
 
       };
     }