Delete issue board welcome cookie when project is new

CHANGELOG.md

@@ -16,6 +16,7 @@ Please view this file on the master branch, on stable branches it's out of date.
   - API: Fix booleans not recognized as such when using the `to_boolean` helper
   - Removed delete branch tooltip !6954
   - Stop unauthorized users dragging on milestone page (blackst0ne)
+  - Restore issue boards welcome message when a project is created !6899
   - Escape ref and path for relative links !6050 (winniehell)
   - Fixed link typo on /help/ui to Alerts section. !6915 (Sam Rose)
   - Fix filtering of milestones with quotes in title (airatshigapov)

app/assets/javascripts/boards/stores/boards_store.js.es6

@@ -63,7 +63,8 @@
       this.removeList('blank');
 
       Cookies.set('issue_board_welcome_hidden', 'true', {
-        expires: 365 * 10
+        expires: 365 * 10,
+        path: ''
       });
     },
     welcomeIsHidden () {

app/controllers/projects_controller.rb

@@ -30,9 +30,12 @@ class ProjectsController < Projects::ApplicationController
     @project = ::Projects::CreateService.new(current_user, project_params).execute
 
     if @project.saved?
+      cookies[:issue_board_welcome_hidden] = { path: project_path(@project), value: nil, expires: Time.at(0) }
+
       redirect_to(
         project_path(@project),
-        notice: "Project '#{@project.name}' was successfully created."
+        notice: "Project '#{@project.name}' was successfully created.",
+        flash: { new_project: true }
       )
     else
       render 'new'