Fix bug where start_date is not updated at web

ee/app/controllers/groups/epics_controller.rb

@@ -83,7 +83,7 @@ class Groups::EpicsController < Groups::ApplicationController
   end
 
   def update_service
-    ::Epics::UpdateService.new(@group, current_user, epic_params)
+    ::Epics::UpdateService.new(@group, current_user, epic_params.stringify_keys)
   end
 
   def finder_type

ee/app/services/epics/update_service.rb

@@ -7,7 +7,7 @@ module Epics
 
       update(epic)
 
-      if (params.keys & [:start_date_fixed, :start_date_is_fixed, :due_date_fixed, :due_date_is_fixed]).present?
+      if (params.keys.map(&:to_sym) & [:start_date_fixed, :start_date_is_fixed, :due_date_fixed, :due_date_is_fixed]).present?
         epic.update_dates
       end
 

ee/spec/controllers/groups/epics_controller_spec.rb

@@ -181,6 +181,8 @@ describe Groups::EpicsController do
     end
 
     describe 'PUT #update' do
+      let(:date) { Date.new(2002, 1, 1)}
+
       before do
         group.add_developer(user)
         put :update, group_id: group, id: epic.to_param, epic: { title: 'New title', label_ids: [label.id], start_date_fixed: '2002-01-01', start_date_is_fixed: true }, format: :json
@@ -195,7 +197,8 @@ describe Groups::EpicsController do
 
         expect(epic.title).to eq('New title')
         expect(epic.labels).to eq([label])
-        expect(epic.start_date_fixed).to eq(Date.new(2002, 1, 1))
+        expect(epic.start_date_fixed).to eq(date)
+        expect(epic.start_date).to eq(date)
         expect(epic.start_date_is_fixed).to eq(true)
       end
     end