无法使用数据库值在haml中填充表-Ruby on Rails

Question

我有一个网站，客户可以在该网站上购买活动的门票，并创建了Reporter :: EventTickets类来为所需的相关信息生成哈希。这个Reporter :: EventTickets类在Reports控制器中被调用，最终我想在管理报告页面上查看它。

问题我无法在haml视图文件中将信息显示在我的桌子上！我已经尽我所能尝试了一切，却完全不知所措。

注意事项信息已成功保存到数据库（PostgreSQL），并且EventTickets类正在正确转换数据（通过RSpec测试）。

代码

class Reporter::EventTickets
  include Virtus.model

  def events
    products.map do |product|
      line_items = LineItem.includes(:order)
        .where("orders.completed_at IS NOT NULL")
        .where(purchasable_type: "Product", purchasable_id: product.id)
        .references(:order)

      ticket_purchases = line_items.map do |line_item|
        order = line_item.order

        [order.bill_address_full_name, order.email, line_item.quantity]
      end
      total = ticket_purchases.reduce(0) { |sum, purchase| sum + purchase.last }

      {
        date: product.event_date,
        name: product.name,
        total: total,
        purchases: ticket_purchases.sort
      }
    end
  end

  private

  def products
    Ticket.where("event_date >= ?", week_ago_in_time_zone).order("event_date ASC")
  end

  def week_ago_in_time_zone
    (Time.current - 7.days).to_date
  end

end

控制器

def event_tickets
    @reporter = Reporter::EventTickets.new
    @csv_link = admin_reports_event_tickets_path(format: :csv)
    respond_with @reporter
end

模型

class Order < ActiveRecord::Base
  has_many :line_items, dependent: :destroy

class LineItem < ActiveRecord::Base
  belongs_to :order, touch: true
  belongs_to :purchasable, polymorphic: true

class Product < ActiveRecord::Base
  include Purchasable
  has_many :line_items, as: :purchasable

查看

= render partial: "admin/shared/header", locals: {title: "Event Ticket Purchases"}
.container-fluid.padded
  = render partial: "admin/shared/notifications"
  .row-fluid.hidden-print
    = link_to "Download CSV", @csv_link, class: "btn btn-blue"
  .row-fluid
    - @reporter.events.each do |event|
      %h3
        = event[:date].strftime("%_m/%e")
        = event[:name]
      .box
        %table.table.table-normal
          %thead
            %tr
              %td Name
              %td Email
              %td Tickets
          %tbody
            - event[:purchases].each do |purchase|
              %tr
                - purchase.each do |column|
                  %td= column
            %tr
              %td{:colspan => "2"}
                %b TOTAL
              %td
                %b= event[:total]

Rails不会出错，并且页面会加载标题和按钮。该表只是不填充。