feat($httpParamSerializerJQLike): honor object.toJSON function if present.

Author: gabrielmaldi

src/ng/http.js

@@ -117,7 +117,9 @@ function $HttpParamSerializerJQLikeProvider() {
           forEach(toSerialize, function(value, index) {
             serialize(value, prefix + '[' + (isObject(value) ? index : '') + ']');
           });
-        } else if (isObject(toSerialize) && !isDate(toSerialize)) {
+        } else if (isFunction(toSerialize.toJSON)) {
+          parts.push(encodeUriQuery(prefix) + '=' + encodeUriQuery(toSerialize.toJSON()));
+        } else if (isObject(toSerialize)) {
           forEachSorted(toSerialize, function(value, key) {
             serialize(value, prefix +
                 (topLevel ? '' : '[') +

test/ng/httpSpec.js

@@ -2030,6 +2030,20 @@ describe('$http param serializers', function() {
       expect(jqrSer({someDate: new Date('2014-07-15T17:30:00.000Z')})).toEqual('someDate=2014-07-15T17:30:00.000Z');
     });
 
+    it('should honor toJSON function', function() {
+      expect(jqrSer({
+        foo: {
+          a: 'b',
+          toJSON: function() {
+            return 'baz';
+          }
+        },
+        bar: {
+          c: 'd'
+        }
+      })).toEqual('bar%5Bc%5D=d&foo=baz');
+    });
+
   });
 
   describe('default array serialization', function() {