ActiveAdmin - 使用默認值過濾器

Question

想知道是否可以使用活動管理員使用默認值過濾？這將有助於爲管理員用戶預加載數據。 [：Q]爲空或PARAMS [：範圍]空

在你需要設置過濾器，如果PARAMS某些情況下

：

filter :country, :default=>'US' 

Answer 1

您可以通過定義的before_filter

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 

UPD做

所以這可能會更好地工作

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

改編的Fivells答案能夠正確使用示波器和下載。感到哈克，但似乎做這項工作。在評論中註明意圖。

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