From 13ee11a887c5ab36e9860b7707261c3784c0fe43 Mon Sep 17 00:00:00 2001
From: Pasvaz <pasqualevazzana@gmail.com>
Date: Mon, 17 Jun 2013 16:42:47 +0200
Subject: [PATCH] feat(ngName): allow interpolated name for form controls

ngName allows forms' fields to set their name dynamically, especially useful with ngRepeat.
Right now is not possible to validate form controls like this: <input type="text" name="{{field.name}}" ng-model="field.data">
The current work-around is to use one nested form for each field but indeed it's an hack rather than a solution.

This implementation could be moved inside the directive 'ngModel' or within its own directive 'ngName', I left intentionally it in the NgModelController because it's slightly faster, however I can refactor it as you prefer.

this fixes also the issues #1404 and #2426
---
 src/ng/directive/input.js | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/src/ng/directive/input.js b/src/ng/directive/input.js
index 591da99e3b8d..4b3f9583f5b0 100644
--- a/src/ng/directive/input.js
+++ b/src/ng/directive/input.js
@@ -924,6 +924,23 @@ var NgModelController = ['$scope', '$exceptionHandler', '$attrs', '$element', '$
   this.$invalid = false;
   this.$name = $attr.name;
 
+  // model -> value
+  var ctrl = this;
+
+  if (isDefined($attr.ngName)) {
+    ctrl.$name = $scope.$eval($attr.ngName);
+    $attr.$set('name', ctrl.$name);
+    $attr.$observe('ngName', function() {
+      var newName = $scope.$eval($attr.ngName);
+      if (newName != ctrl.$name) {
+        parentForm.$removeControl(ctrl);
+        ctrl.$name = newName;
+        $attr.$set('name', ctrl.$name);
+        parentForm.$addControl(ctrl);
+      }
+    });
+  }
+
   var ngModelGet = $parse($attr.ngModel),
       ngModelSet = ngModelGet.assign;
 
@@ -1063,9 +1080,6 @@ var NgModelController = ['$scope', '$exceptionHandler', '$attrs', '$element', '$
     }
   };
 
-  // model -> value
-  var ctrl = this;
-
   $scope.$watch(function ngModelWatch() {
     var value = ngModelGet($scope);