Add, Remove, and query Relations

parse_rest/datatypes.py

@@ -367,3 +367,25 @@ class Object(ParseResource):
             }
         self.__class__.PUT(self._absolute_url, **payload)
         self.__dict__[key] += amount
+
+    def removeRelation(self, key, className, objectsId):
+        self.manageRelation('RemoveRelation', key, className, objectsId)
+
+    def addRelation(self, key, className, objectsId):
+        self.manageRelation('AddRelation', key, className, objectsId)
+
+    def manageRelation(self, action, key, className, objectsId):
+        objects = [{
+                    "__type": "Pointer",
+                    "className": className,
+                    "objectId": objectId
+                    } for objectId in objectsId]
+        
+        payload = {
+            key: {
+                 "__op": action,
+                 "objects": objects
+                }
+            }
+        self.__class__.PUT(self._absolute_url, **payload)
+        self.__dict__[key] = ''
\ No newline at end of file

parse_rest/query.py

@@ -77,7 +77,7 @@ class Queryset(object):
     __metaclass__ = QuerysetMetaclass
 
     OPERATORS = [
-        'lt', 'lte', 'gt', 'gte', 'ne', 'in', 'nin', 'exists', 'select', 'dontSelect', 'all'
+        'lt', 'lte', 'gt', 'gte', 'ne', 'in', 'nin', 'exists', 'select', 'dontSelect', 'all', 'relatedTo'
         ]
 
     @staticmethod
@@ -123,7 +123,10 @@ class Queryset(object):
             if operator is None:
                 self._where[attr] = parse_value
             else:
-                self._where[attr]['$' + operator] = parse_value
+                if operator == 'relatedTo':
+                    self._where['$' + operator] = parse_value
+                else:    
+                    self._where[attr]['$' + operator] = parse_value
         return self
 
     def order_by(self, order, descending=False):