Add the method call to the ChapterController

There feels like a lot of repetition here, but I can't figure out how to remove it right now

Signed-off-by: jonathan.kerr <3410350+jonodrew@users.noreply.github.com>

Author: jonodrew

app/controllers/chapter_controller.rb

@@ -10,6 +10,7 @@ def show
     @latest_workshops = event_presenters_by_date(past_events)
 
     @recent_sponsors = Sponsor.recent_for_chapter(@chapter)
+    @attending_ids = MemberPresenter.new(current_user).attending_workshops
   end
 
   private

app/views/chapter/show.html.haml

@@ -28,13 +28,13 @@
         %h2.mb-4= t('homepage.events.upcoming')
         - @upcoming_workshops.each do |date, workshops|
           %h3.h5= date
-          = render workshops
+          = render workshops, attending_ids: @attending_ids
 
       - if @latest_workshops.any?
         .pt-4
           %h2.mb-4 Past Events
           - @latest_workshops.each do |date, workshops|
-            = render workshops
+            = render workshops, attending_ids: @attending_ids
 
 - if @recent_sponsors.any?
   .py-4.py-lg-5.bg-light