add scope variables in scope option

docs/3.0/common/associations_scope_option_common.md

@@ -14,4 +14,8 @@ field :user,
 ```
 
 Pass in a block where you attach scopes to the `query` object. The block gets executed in the [`ExecutionContext`](./../execution-context).
+
+With version 2.5.0, you'll also have access to the `parent` record so that you can use that to scope your associated models even better.
+
+Starting with version 3.12, access to `resource` and `parent_resource` was additionally provided.
 </Option>