[#4327] Save the deliverable changes to the issue using the hooks.

lib/redmine_contracts/hooks/controller_issues_edit_before_save_hook.rb

@@ -0,0 +1,19 @@
+module RedmineContracts
+  module Hooks
+    class ControllerIssuesEditBeforeSaveHook < Redmine::Hook::ViewListener
+      def controller_issues_edit_before_save(context={})
+        if context[:params] && context[:params][:issue] && context[:params][:issue][:deliverable_id].present?
+          deliverable = Deliverable.find_by_id(context[:params][:issue][:deliverable_id])
+
+          if deliverable.contract.project == context[:issue].project
+            context[:issue].deliverable = deliverable
+          end
+        end
+
+        return ''
+      end
+
+      alias_method :controller_issues_new_before_save, :controller_issues_edit_before_save
+    end
+  end
+end