schedules.html.erb

<div class="container">
  <% if ClockworkWeb.redis %>
    <% if ClockworkWeb.monitor %>
      <% if ClockworkWeb.multiple? %>
        <p>Multiple clockwork processes detected</p>
      <% elsif ClockworkWeb.running? %>
        <p>Clockwork is running</p>
      <% else %>
        <p>
          Clockwork is not running
          <% if @last_heartbeat %>
            - last heartbeat was <%= time_ago_in_words(@last_heartbeat) %> ago
          <% end %>
        </p>
      <% end %>
    <% end %>
  <% else %>
    <p>Add Redis for monitoring and disabling jobs</p>
  <% end %>

  <div class="table_container">
    <table class="queues table table-hover table-bordered table-striped table-white">
      <thead>
        <tr>
          <th>Job</th>
          <th style="width: 20%;">Period</th>
          <th style="width: 20%;">Last Run</th>
        </tr>
      </thead>
      <tbody>
        <% @events.each do |event| %>
          <% enabled = !@disabled.include?(event.job) %>
          <tr class="<%= enabled ? "" : "disabled" %>">
            <td><%= event.job %></td>
            <td>
              <%= friendly_period(event.instance_variable_get(:@period)) %>
              <% at = event.instance_variable_get(:@at) %>
              <% if at %>
                at <%= friendly_time_part(at.instance_variable_get(:@hour)) %>:<%= friendly_time_part(at.instance_variable_get(:@min)) %>
              <% end %>
              <% if event.instance_variable_get(:@if) %>
                if __
              <% end %>
            </td>
            <td><%= last_run(@last_runs[event.job]) %></td>
          </tr>
        <% end %>
      </tbody>
    </table>
</div>

sidekiq_clockwork.rb

module Sidekiq
  module Clockwork
    module WebExtension
      def self.registered(app)
        view_path = File.expand_path("app/views/sidekiq")

        app.helpers ActionView::Helpers::TextHelper,
                    ActionView::Helpers::DateHelper,
                    ClockworkWeb::HomeHelper

        app.get "/schedules" do
          @events =
            ::Clockwork.manager.instance_variable_get(:@events).sort_by do |e|
              at = e.instance_variable_get(:@at)
              [
                e.instance_variable_get(:@period),
                (at && at.instance_variable_get(:@hour)) || -1,
                (at && at.instance_variable_get(:@min)) || -1,
                e.job.to_s
              ]
            end

          @last_runs = ClockworkWeb.last_runs
          @disabled = ClockworkWeb.disabled_jobs
          @last_heartbeat = ClockworkWeb.last_heartbeat

          render :erb, File.read(File.join(view_path, "schedules.html.erb"))
        end
      end
    end
  end
end

Sidekiq::Web.register Sidekiq::Clockwork::WebExtension
Sidekiq::Web.tabs["Scheduled Tasks"] = "schedules"