ruby-on-rails - MetaSearch sort ordered column

Question

I have a model:

class Event < ActiveRecord::Base
  default_scope :order => 'date_begin'
end

There is a sort link in a view file:

= sort_link @search, :date_begin

When I'm trying to order date_begin as DESC nothing happens because the SQL query is:

SELECT * FROM events ORDER BY date_begin, date_begin DESC

How to make MetaSearch reorder this column? (I know that there is a "reorder" method in ActiveRecord but I don't know how to apply it to MetaSearch)

Answer 1

当您决定使用时，您可以使用unscopedmeta_search方法：

@search = Event.unscoped.search(params[:search])

Answer 2

我还想使用默认排序顺序，除了在控制器中强制执行默认顺序之外没有想出任何其他方法，而不是在模型中使用任何排序范围：

search = {"meta_sort" => "created_at.desc"}.merge(params[:search] || {})
@search = Photo.search(search)

默认排序顺序是 created_at DESC，但如果在参数中收到新的排序顺序，它将被覆盖。似乎对我有用。

Answer 3

@search = if params[:q] && params[:q][:s]
  # Ransack sorting is applied - cancel default sorting
  Event.reorder(nil).search(params[:q])
else
  # Use default sorting
  Event.search(params[:q])
end

好处：

1) 仅取消 :order 范围 - 如果您有 .where(:deleted_at => nil).order(:date_begin) 默认范围，则很有用。

2) 未应用 Ransack 排序时使用默认排序。