急于加载的导轨彼此不相关

问题描述

我有以下内容： order.rb

  belongs_to :user
  belongs_to :property
  has_many :order_lines,:dependent => :destroy

order_line.rb

  belongs_to :order
  belongs_to :service
  belongs_to :status,:class_name => \"SettingsOption\"

orders_controller.rb

  def index
    @orders = Order.active_w_property.find_all_by_user_id(current_user.id,:include => {:order_lines => [:service,:status]})
  end

index.html.erb

...
<%= render :partial => \'order\',:collection => @orders %>
...

_order.html.erb

...
<% order.order_lines.each do |line| %>
  <% total = total + line.price %>
  <tr>
    <td>
      <%= line.service.option.nil? ?
            t(line.service.name) :
            [t(line.service.name),t(line.service.option)].join(\" \") %>
    </td>
    <td><%= t(line.description) %></td>
    <td class=\"align-right\"><%= currencify_price(line.price) %></td>
    <td class=\"align-center\"><%= t(line.status.value) %></td>
  </tr>
<% end %>
...

登录index.html.erb

  ←[4;36;1mOrder Load (2.0ms)←[0m   ←[0;1mSELECT \"\"very long query\"\"
  ←[4;35;1mOrderLine Load (1.0ms)←[0m   ←[0mSELECT `order_lines`.* FROM `order_lines` WHERE (`order_lines`.order_id IN (10134,1
  ←[4;36;1mOrderLine Columns (5.0ms)←[0m   ←[0;1mSHOW FIELDS FROM `order_lines`←[0m
  ←[4;35;1mService Columns (14.0ms)←[0m   ←[0mSHOW FIELDS FROM `services`←[0m
  ←[4;36;1mService Load (3.0ms)←[0m   ←[0;1mSELECT * FROM `services` WHERE (`services`.`id` IN (6,7,8,9,1,2,3,4,10,5)) ←[0m
  ←[4;35;1mSettingsOption Columns (4.0ms)←[0m   ←[0mSHOW FIELDS FROM `settings_options`←[0m
  ←[4;36;1mSettingsOption Load (3.0ms)←[0m   ←[0;1mSELECT * FROM `settings_options` WHERE (`settings_options`.`id` = 167) ←[0m
Rendering template within layouts/application
Rendering myimmonatie/orders/index

记录_order.html.erb

Rendered myimmonatie/orders/_order (8.0ms)
  ←[4;36;1mOrderLine Load (0.0ms)←[0m   ←[0;1mSELECT * FROM `order_lines` WHERE (`order_lines`.order_id = 10112) ←[0m
  ←[4;35;1mCACHE (0.0ms)←[0m   ←[0mSELECT * FROM `services` WHERE (`services`.`id` = 1) ←[0m
  ←[4;36;1mCACHE (0.0ms)←[0m   ←[0;1mSELECT * FROM `settings_options` WHERE (`settings_options`.`id` = 167) ←[0m
  ←[4;35;1mCACHE (0.0ms)←[0m   ←[0mSELECT * FROM `services` WHERE (`services`.`id` = 5) ←[0m
  ←[4;36;1mCACHE (0.0ms)←[0m   ←[0;1mSELECT * FROM `settings_options` WHERE (`settings_options`.`id` = 167) ←[0m
  ←[4;35;1mCACHE (0.0ms)←[0m   ←[0mSELECT * FROM `services` WHERE (`services`.`id` = 3) ←[0m
  ←[4;36;1mCACHE (0.0ms)←[0m   ←[0;1mSELECT * FROM `settings_options` WHERE (`settings_options`.`id` = 167) ←[0m
  ←[4;35;1mCACHE (0.0ms)←[0m   ←[0mSELECT * FROM `services` WHERE (`services`.`id` = 2) ←[0m
  ←[4;36;1mCACHE (0.0ms)←[0m   ←[0;1mSELECT * FROM `settings_options` WHERE (`settings_options`.`id` = 167) ←[0m

对于控制器索引方法，所有包含的表均按预期加载。但是，对于部分中的每个order_line，尽管order_line之前已加载，但它们仍会再次加载。此外，每次都会查询服务（尽管是从缓存中查询）。如何让所有内容都呈现而无需新查询？ 更新：使用Rails 2.3.11     

解决方法

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