* Added support for offset and limit query parameters (?limit=x&offset=y) to workbenc...

[arvados.git] / apps / workbench / app / controllers / collections_controller.rb

diff --git a/apps/workbench/app/controllers/collections_controller.rb b/apps/workbench/app/controllers/collections_controller.rb
index 737583a31e68c6d6ab64b40ba298bafe0832dd41..01abbb4ee06828f8cf7b529f6bbf77b9bdead716 100644 (file)
--- a/apps/workbench/app/controllers/collections_controller.rb
+++ b/apps/workbench/app/controllers/collections_controller.rb
@@ -12,7 +12,19 @@ class CollectionsController < ApplicationController
                       Collection.where(any: ['contains', params[:search]])).
         uniq { |c| c.uuid }
     else
-      @collections = Collection.limit(100)
+      if params[:limit]
+        limit = params[:limit].to_i
+      else
+        limit = 100
+      end
+
+      if params[:offset]
+        offset = params[:offset].to_i
+      else
+        offset = 0
+      end
+
+      @collections = Collection.limit(limit).offset(offset)
     end
     @links = Link.limit(1000).
       where(head_uuid: @collections.collect(&:uuid))
@@ -105,7 +117,7 @@ class CollectionsController < ApplicationController
       puts request
       @prov_svg = ProvenanceHelper::create_provenance_graph(u.provenance, "provenance_svg", 
                                                             {:request => request,
-                                                              :direction => :top_down, 
+                                                              :direction => :bottom_up, 
                                                               :combine_jobs => :script_only}) rescue nil
       @used_by_svg = ProvenanceHelper::create_provenance_graph(u.used_by, "used_by_svg", 
                                                                {:request => request,