RailsAdmin：多态类型作为自定义过滤器

Question

鉴于此模型，

class Flat < ActiveRecord::Base
  belongs_to :owner, polymorphic: true
end

在RailsAdmin中，我想添加一个owner_type过滤器。我该怎么办？

Answer 1

似乎对于所有关联字段，默认情况下都会关闭过滤。您需要做的就是重新打开它。

class Flat < ActiveRecord::Base
  belongs_to :owner, polymorphic: true

  rails_admin do
    list do
      filters [:owner_type] # if you'd like an owner_type filter by default
      field :owner_type do
        filterable true # allow owner_type to be filtered on
      end
    end
  end
end