fix(blueprint): primary key not always called ID

* Fix

* Update blueprint for update

Primary key not always called 'ID', we should check pk name

* Update update.js

* Update update.js

generators/blueprint/templates/api/blueprints/update.js

@@ -13,9 +13,12 @@ module.exports = (req, res) => {
   const Model = actionUtil.parseModel(req);
   const pk = actionUtil.requirePk(req);
   const values = actionUtil.parseValues(req);
-
+  const pkName = Model.primaryKey;
+  const criteria = {};
+  criteria[pkName] = pk;
+
   Model
-    .update(pk, _.omit(values, 'id'))
+    .update(criteria, _.omit(values, pkName))
     .then(records => records[0] ? res.ok(records[0]) : res.notFound())
     .catch(res.negotiate);
 };