activeadmin - ActiveAdmin - 使用默认值过滤

Question

想知道是否可以使用活动管理员使用默认值进行过滤？这将有助于为管理员用户预加载数据。

filter  :country, :default=>'US'

Answer 1

您可以通过定义 before_filter 来做到这一点

  before_filter :only => [:index] do
    if params['commit'].blank?
       #country_contains or country_eq .. or depending of your filter type
       params['q'] = {:country_eq => 'US'} 
    end
  end

升级版：

在某些情况下，如果 params[:q] 为空或 params[:scope] 为空，您需要设置过滤器

所以这可能会更好

  before_filter :only => [:index] do
    if params['commit'].blank? && params['q'].blank? && params[:scope].blank?
       #country_contains or country_eq .. or depending of your filter type
       params['q'] = {:country_eq => 'US'} 
    end
  end

Answer 2

改编后的 Fivells 回答可以正确使用范围和下载。感觉很hacky，但似乎可以完成这项工作。注释中的意图。

  before_filter only: :index do
    # when arriving through top navigation
    if params.keys == ["controller", "action"]
      extra_params = {"q" => {"country_eq" => "US"}}

      # make sure data is filtered and filters show correctly
      params.merge! extra_params

      # make sure downloads and scopes use the default filter
      request.query_parameters.merge! extra_params
    end
  end