activeadmin:缓存过滤器值

Question

我有一个过滤器

#in cities.rb

  filter :country #drop-down select list with more than 200 values

它几乎是静态列表,我需要缓存它以提高生产力

我试过了

filter :country, :collection=>proc{cache {options_from_collection_for_select(Country.all, :id, :name)}} #no luck

谢谢

Answer 1

尝试这样的事情：

编辑：我根据评论反馈更改了我的代码示例。

编辑：我已经更新了示例以包括 html 生成。

# In activeadmin
filter :country, :collection => proc do
  Rails.cache.fetch('countries_for_select') do
    options_from_collection_for_select(Country.all, :id, :name)}
  end
end

# Somewhere, when you want to expire the cache
Rails.cache.delete('countries_for_select')