Adjust weight property to accomodate EE

app/serializers/issue_board_entity.rb

@@ -11,7 +11,6 @@ class IssueBoardEntity < Grape::Entity
   expose :due_date
   expose :project_id
   expose :relative_position
-  expose :weight, if: -> (*) { respond_to?(:weight) }
   expose :project do |issue|
     API::Entities::Project.represent issue.project, only: [:id, :path]

spec/fixtures/api/schemas/entities/issue_board.json

@@ -9,7 +9,7 @@
     "project_id": { "type": "integer" },
     "relative_position": { "type": ["integer", "null"] },
     "time_estimate": { "type": "integer" },
-    "weight": { "type": "integer" },
+    "weight": { "type": ["integer", "null"] },
     "project": {
       "type": "object",
       "properties": {