Re-wrote parenting, should be significantly faster, more maintainable

app/imports/api/parenting/getCollectionByName.js

@@ -0,0 +1,11 @@
+const collectionDoesntExistError = function(collectionName){
+  throw new Meteor.Error('bad-collection-reference',
+    `Parent references collection ${collectionName}, which does not exist`
+  );
+};
+
+const getCollectionByName = function(name){
+  return Mongo.Collection.get(name) || collectionDoesntExistError(name);
+};
+
+export default getCollectionByName;