How to use ActiveAdmin on models using has_many through association?

Question

I am using ActiveAdmin gem in my project.

I have 2 models using has_many through association. The database schema looks exactly the same as the example in RailsGuide

Answer 1

If you would like show multiple field in a panel row you can use following view:

show do |phy|
   panel "Details" do
        attributes_table do
          ... # Other fields come here
          row :appointment_dates do
            apps=""
            phy.appointments.all.each do |app|
              apps += app.patient.name + ":" + app.appoinment_date + ", "
            end
            apps.chomp(", ")
          end
        end      
   end
end

To place it in you redit form first put appointment_ids to permitted list:

permit_params: appointment_ids:[]

Add has many relationship to the form

form do |f|
   f.has_many :appointments do |app|
     app.inputs "Appointments" do
       app.input :patients, :as => :select, :label => "Assigned Patients"
       app.input :appointment_date
     end  
   end
end

Should work if there is no coding error.