Make sure models array has uniq models (otherwise it piles up duplicates from previous calls and affects performance severly).

Author: elado

CHANGELOG.md

@@ -1,7 +1,8 @@
 ### 0.8.1 (Next)
 
 * [#91](https://github.com/tim-vandecasteele/grape-swagger/issues/91): Fixed empty field for group parameters' name with type hash or Array - [@dukedave](https://github.com/dukedave).
-* [#154](https://github.com/tim-vandecasteele/grape-swagger/pull/154): Allow Classes for type declarations inside documentation - [@mrmargolis](https://github.com/mrmargolis).
+* [#154](https://github.com/tim-vandecasteele/grape-swagger/pull/154): Allow classes for type declarations inside documentation - [@mrmargolis](https://github.com/mrmargolis).
+* [#162](https://github.com/tim-vandecasteele/grape-swagger/pull/162): Fix performance issue related to having a large number of models - [@elado](https://github.com/elado).
 * Your contribution here.
 
 ### 0.8.0 (August 30, 2014)

lib/grape-swagger.rb

@@ -162,9 +162,9 @@ def self.setup(options)
 
                   http_codes  = parse_http_codes(route.route_http_codes, models)
 
-                  models << @@models if @@models.present?
+                  models |= @@models if @@models.present?
 
-                  models << route.route_entity if route.route_entity.present?
+                  models |= [route.route_entity] if route.route_entity.present?
 
                   models = models_with_included_presenters(models.flatten.compact)