refactor: rename parent_scope_id to scope_id

addons/api/addon/serializers/scope.js

@@ -13,7 +13,7 @@ export default class ScopeSerializer extends ApplicationSerializer {
   /**
    * While most resources do not serialize scope into a request body (scope
    * is expressed in the URL), scopes themselves _do serialize scope_ as a
-   * string field `parent_scope_id`.
+   * string field `scope_id`.
    * Otherwise delegate to default attribute serializer.
    *
    * @override
@@ -27,7 +27,7 @@ export default class ScopeSerializer extends ApplicationSerializer {
     const value = super.serializeAttribute(...arguments);
     const parentScope = snapshot.attr('scope');
     if (key === 'scope' && this._canSerialize(key) && parentScope) {
-      json.parent_scope_id = parentScope.attr('scope_id');
+      json.scope_id = parentScope.attr('scope_id');
       delete json[key];
     }
     return value;