Rails 3 Meta_Search 多级关联

发布于 2024-11-23 21:54:49 字数 617 浏览 1 评论 0原文

我有以下类

class BusinessLocation
  has_many :campaigns
end

“我的活动类”作为名为 event_return_rate 的属性。我正在使用 meta_search 的 sort_link url 帮助程序使用以下格式对 Business_Locations 列表进行排序：

  <%= sort_link @search, :average_price, "Avg. Menu Price" %>
  <%= sort_link @search, :temp_return_rate, "% of Sale" %>

为了使排序正常工作，我必须在 BusinessLocations 中创建一个 temp_return_rate 属性，以使用 sort_link 帮助程序对其进行排序。我想知道是否有一种方法可以做到这一点，而无需在我的 BusinessLocations 类中创建临时属性。

此外，由于有许多广告系列与我的 BusinessLocation 相关，因此当我需要查询返回 end_date > 的广告系列时，日期.今天（只有一个广告活动符合此标准）。

谢谢！

原文

I have the following classes

class BusinessLocation
  has_many :campaigns
end

My campaigns class as an attribute called event_return_rate. I am using meta_search's sort_link url helper to sort a list of Business_Locations using the following format:

  <%= sort_link @search, :average_price, "Avg. Menu Price" %>
  <%= sort_link @search, :temp_return_rate, "% of Sale" %>

In order to get the sorting to work, i had to create a temp_return_rate attribute in my BusinessLocations to sort it using the sort_link helper. I would like to know if there is a way to do this without having to create a temp attribute in my BusinessLocations class.

Also since there are many campaigns associated with my BusinessLocation, when I need the query to return campaign who's end_date > Date.today (only one campaign will meet this criteria).

Thanks!

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