Present of a paginated collection, vs. a paginated array.

Gemfile.lock

@@ -159,7 +159,7 @@ GEM
       loofah (~> 2.0)
     rainbow (2.0.0)
     rake (10.4.2)
-    representable (2.2.0)
+    representable (2.2.2)
       multi_json
       nokogiri
       uber (~> 0.0.7)

app/api/endpoints/challenges_endpoint.rb

@@ -19,7 +19,7 @@ class ChallengesEndpoint < Grape::API
           optional :size, type: Integer, default: 3, desc: 'Number of challenges to return.'
         end
         get do
-          present Kaminari.paginate_array(Challenge.all).page(params[:page]).per(params[:size]), with: Api::Presenters::ChallengesPresenter
+          present Challenge.all.page(params[:page]).per(params[:size]), with: Api::Presenters::ChallengesPresenter
         end
       end
     end

app/api/endpoints/matches_endpoint.rb

@@ -19,7 +19,7 @@ class MatchesEndpoint < Grape::API
           optional :size, type: Integer, default: 3, desc: 'Number of matches to return.'
         end
         get do
-          present Kaminari.paginate_array(Match.all).page(params[:page]).per(params[:size]), with: Api::Presenters::MatchesPresenter
+          present Match.all.page(params[:page]).per(params[:size]), with: Api::Presenters::MatchesPresenter
         end
       end
     end

app/api/endpoints/users_endpoint.rb

@@ -19,7 +19,7 @@ class UsersEndpoint < Grape::API
           optional :size, type: Integer, default: 3, desc: 'Number of users to return.'
         end
         get do
-          present Kaminari.paginate_array(User.all).page(params[:page]).per(params[:size]), with: Api::Presenters::UsersPresenter
+          present User.all.page(params[:page]).per(params[:size]), with: Api::Presenters::UsersPresenter
         end
       end
     end

config/initializers/mongoid/criteria.rb

@@ -0,0 +1,8 @@
+module Mongoid
+  class Criteria
+    def respond_to?(method, include_private = false)
+      # see https://github.com/intridea/grape/blob/master/lib/grape/dsl/inside_route.rb#L209, causes a merge without options
+      method == 'merge' ? false : super
+    end
+  end
+end