merge sails hook's model

index.js

@@ -82,6 +82,14 @@ module.exports = sails => {
                     return next(err);
                 }
 
+                // if exist any implementation of sails hook contain model definitions,
+                // then merge sails hook's model before init all models.
+                if (sails.models) {
+                  const merge = sails.util ? sails.util.merge : _.merge;
+                  const hookModels = sails.models || {};
+                  models = merge({}, models, hookModels);
+                }
+
                 self.defineModels(models, connections);
                 self.migrateSchema(next, connections, models);
             });