Hello, i want to create a multidimensional Array or Hash with group_by 'created_at'.
3 dimensions needed: myArray[week][day][data]
currently i only created it with 2 dimesions:
#model def self.group_per_day all.group_by{|t| t.created_at.strftime("%d. %B, %Y")}.sort #"%U" for Weeks end
#controller @pdf_activities = Activity.group_per_day
#view -@pdf_activities.each do |day| =day[0] -day[1].each do |activity| =activity.activity
thanks