如何在使用has_many通过关联的模型上使用ActiveAdmin？

Question

我在我的项目中使用ActiveAdmin gem.

我有2个模型使用has_many通过关联.数据库模式看起来与RailsGuide中的示例完全相同.http://guides.rubyonrails.org/association_basics.html#the-has_many-through-association has_many通过关联http://guides.rubyonrails.org/images/has_many_through.png

如何使用ActiveAdmin ...

1. 在医生页面显示每位患者的预约日期？
2. 在医生页面中编辑每位患者的预约日期？

谢谢大家.:)

Answer 1

1)

show do
  panel "Patients" do
    table_for physician.appointments do
      column "name" do |appointment|
        appointment.patient.name
      end
      column :appointment_date
    end
  end
end

对于2)

form do |f|
  f.inputs "Details" do # physician's fields
    f.input :name
  end

  f.has_many :appointments do |app_f|
    app_f.inputs "Appointments" do
      if !app_f.object.nil?
        # show the destroy checkbox only if it is an existing appointment
        # else, there's already dynamic JS to add / remove new appointments
        app_f.input :_destroy, :as => :boolean, :label => "Destroy?"
      end

      app_f.input :patient # it should automatically generate a drop-down select to choose from your existing patients
      app_f.input :appointment_date
    end
  end
end

Answer 2

在回答tomblomfield时,请在评论中跟进问题:

在AA ActiveAdmin.register Model do块中尝试以下操作:

  controller do
    def scoped_collection
      YourModel.includes(:add_your_includes_here)
    end
  end

这应该在单独的查询中延迟加载每个索引页的所有关联

HTH