From 2ed53087d7dd06d728e333a449265f7685275548 Mon Sep 17 00:00:00 2001
From: Pete Bacon Darwin
Date: Wed, 24 Oct 2012 11:06:36 +0100
Subject: fix(compile): Interpolate @ locals before the link function runs

Do a one-off interpolation of @ locals to ensure that the link fn receives attributes that are already interpolated.
---
 src/ng/compile.js      |  6 +++++-
 test/ng/compileSpec.js | 18 ++++++------------
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/src/ng/compile.js b/src/ng/compile.js
index 18adc2c9..32c1d1ca 100644
--- a/src/ng/compile.js
+++ b/src/ng/compile.js
@@ -735,9 +735,13 @@ function $CompileProvider($provide) {
                   scope[scopeName] = value;
                 });
                 attrs.$$observers[attrName].$$scope = parentScope;
+                if( attrs[attrName] ) {
+                  // If the attribute has been provided then we trigger an interpolation to ensure the value is there for use in the link fn
+                  scope[scopeName] = $interpolate(attrs[attrName])(parentScope);
+                }
                 break;
               }
-
+              
               case '=': {
                 parentGet = $parse(attrs[attrName]);
                 parentSet = parentGet.assign || function() {
diff --git a/test/ng/compileSpec.js b/test/ng/compileSpec.js
index a7707cf9..3b69f609 100644
--- a/test/ng/compileSpec.js
+++ b/test/ng/compileSpec.js
@@ -1812,27 +1812,21 @@ describe('$compile', function() {
     describe('attribute', function() {
       it('should copy simple attribute', inject(function() {
         compile('<div><span my-component attr="some text">');
-        expect(componentScope.attr).toEqual(undefined);
-        expect(componentScope.attrAlias).toEqual(undefined);
-
-        $rootScope.$apply();
 
         expect(componentScope.attr).toEqual('some text');
         expect(componentScope.attrAlias).toEqual('some text');
         expect(componentScope.attrAlias).toEqual(componentScope.attr);
       }));
 
-
-      it('should update when interpolated attribute updates', inject(function() {
-        compile('<div><span my-component attr="hello {{name}}">');
-        expect(componentScope.attr).toEqual(undefined);
-        expect(componentScope.attrAlias).toEqual(undefined);
-
+      it('should set up the interpolation before it reaches the link function', inject(function() {
         $rootScope.name = 'misko';
-        $rootScope.$apply();
-
+        compile('<div><span my-component attr="hello {{name}}">');
         expect(componentScope.attr).toEqual('hello misko');
         expect(componentScope.attrAlias).toEqual('hello misko');
+      }));
+
+      it('should update when interpolated attribute updates', inject(function() {
+        compile('<div><span my-component attr="hello {{name}}">');
 
         $rootScope.name = 'igor';
         $rootScope.$apply();
-- 
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