feat($resource): pass resource to the dynamic param function

src/ngResource/resource.js

@@ -433,7 +433,7 @@ angular.module('ngResource', ['ng']).
         var ids = {};
         actionParams = extend({}, paramDefaults, actionParams);
         forEach(actionParams, function(value, key){
-          if (isFunction(value)) { value = value(); }
+          if (isFunction(value)) { value = value(data); }
           ids[key] = value && value.charAt && value.charAt(0) == '@' ?
             lookupDottedPath(data, value.substr(1)) : value;
         });

test/ngResource/resourceSpec.js

@@ -499,7 +499,6 @@ describe("resource", function() {
     var currentGroup = 'students',
         Person = $resource('/Person/:group/:id', { group: function() { return currentGroup; }});
 
-
     $httpBackend.expect('GET', '/Person/students/fedor').respond({id: 'fedor', email: '[email protected]'});
 
     var fedor = Person.get({id: 'fedor'});
@@ -509,6 +508,29 @@ describe("resource", function() {
   });
 
 
+  it('should pass resource object to dynamic default parameters', function() {
+    var Person = $resource('/Person/:id', {
+      id: function(data) {
+        return data ? data.id : 'fedor';
+      }
+    });
+
+    $httpBackend.expect('GET', '/Person/fedor').respond(
+        {id: 'fedor', email: '[email protected]', count: 1});
+
+    var fedor = Person.get();
+    $httpBackend.flush();
+
+    expect(fedor).toEqualData({id: 'fedor', email: '[email protected]', count: 1});
+
+    $httpBackend.expect('POST', '/Person/fedor').respond(
+        {id: 'fedor', email: '[email protected]', count: 2});
+    fedor.$save();
+    $httpBackend.flush();
+    expect(fedor).toEqualData({id: 'fedor', email: '[email protected]', count: 2});
+  });
+
+
   it('should support dynamic default parameters (action specific)', function() {
     var currentGroup = 'students',
         Person = $resource('/Person/:group/:id', {}, {