<%= form_tag "", method: :get do %>
  <p><%= label_tag :start_date %><%= text_field_tag :start, @start.strftime("%Y-%m-%d") %></p>
  <p><%= label_tag :end_date %><%= text_field_tag :end, @end.strftime("%Y-%m-%d") %></p>
  <p><%= submit_tag :View, name: nil %></p>
<% end %>

<table>
  <thead>
    <tr>
      <th>Date</th>
      <th>Visitors</th>
      <th>Customers</th>
    </tr>
  </thead>
  <tbody>
    <% @end.downto(@start) do |date| %>
      <% customer_count = @customers.find { |c| c.date_created_at == date.strftime("%Y-%m-%d") } %>
      <% visitor_count = @visitors.find { |v| v.date_created_at == date.strftime("%Y-%m-%d") } %>
      <tr>
        <td><%= date %></td>
        <td><%= visitor_count.present? ? visitor_count.count_all : 0 %></td>
        <td><%= customer_count.present? ? customer_count.count_all : 0 %></td>
      </tr>
    <% end %>
  </tbody>
</table>