<%= line_chart @goals.map { |goal| {name: goal.name, data: goal.feats.group_by_week(:created_at).count} } %> or <%= line_chart Feat.group(:goal_id).group_by_week(:created_at).count %> Say Goodbye To Timeouts Make your pages load super fast and stop worrying about timeouts. Give each chart its own endpoint. <%= line_chart completed_tasks_charts_path %> And in your controller, pass the data as JSON.
