- fix related to the issue angular#875

Author: petrovalex

src/ngResource/resource.js

@@ -310,8 +310,9 @@ angular.module('ngResource', ['ng']).
 
       actions = extend({}, DEFAULT_ACTIONS, actions);
 
-      function extractParams(data){
+      function extractParams(data, actionParams){
         var ids = {};
+        paramDefaults = extend(paramDefaults, actionParams);
         forEach(paramDefaults || {}, function(value, key){
           ids[key] = value.charAt && value.charAt(0) == '@' ? getter(data, value.substr(1)) : value;
         });
@@ -366,7 +367,7 @@ angular.module('ngResource', ['ng']).
           var value = this instanceof Resource ? this : (action.isArray ? [] : new Resource(data));
           $http({
             method: action.method,
-            url: route.url(extend({}, extractParams(data), action.params || {}, params)),
+            url: route.url(extend({}, extractParams(data, action.params || {}), params)),
             data: data
           }).then(function(response) {
               var data = response.data;

test/ngResource/resourceSpec.js

@@ -118,6 +118,17 @@ describe("resource", function() {
   });
 
 
+  it('should build resource with action default param reading the value from instance', function() {
+    $httpBackend.expect('POST', '/Customer/123').respond();
+    var R = $resource('/Customer/:id', {}, {post: {method: 'POST', params: {id: '@id'}}});
+
+    var inst = new R({id:123});
+    expect(inst.id).toBe(123);
+
+    inst.$post();
+  });
+
+
   it('should handle multiple params with same name', function() {
     var R = $resource('/:id/:id');