fix date mixup in timeline

app/helpers/timeline_helper.rb

@@ -32,20 +32,24 @@ module TimelineHelper
 
   # weekly occupany, hash containing weeks to number of volunteer mapping
   def weekly
-    data = {}
     month_start = Date.today.at_beginning_of_month
-    ( 0 ... @weeks ).each do |week|
-      data[ week ] = -1
-      end_week = month_start + week.weeks
+    ( 0 ... @weeks ).collect do |week|
+      amount = -1
+      start_week = month_start + week.weeks
+      end_week = start_week + 7.days
+      #puts "WEEK #{week}  #{start_week} -- #{end_week}"
       @members.each do |mem|
+        puts "volunteer #{mem.name}"
         next unless mem.arriving
         next unless mem.leaving
-        next if mem.leaving <= end_week
-        next if mem.arriving >= (end_week - 7.days)
-        data[ week ] += 1
+        next if mem.leaving <= start_week
+        #puts "volunteer #{mem.name} leaving #{mem.leaving}"
+        next if mem.arriving >= end_week
+        #puts "volunteer #{mem.name} arriving #{mem.arriving}"
+        amount += 1
       end
+      amount
     end
-    data
   end
   def bg_for(week)
     [ "bg-cyan-100",