ActiveScaffold - changing default name of associated object

Question

My model "combobox" has_many "comboboxselects", and "comboboxselects" belongs_to "combobox". Activescaffold of "comboboxes" displays data in comboboxselects-column like "#<Comboboxselect:0x472d25c>". How to make display the "answer" column from table "comboxselects"?

Models:

class Combobox < ActiveRecord::Base
 has_many :comboboxselects
end

class Comboboxselect < ActiveRecord::Base
 belongs_to :combobox
end

Schema:

  create_table "comboboxes", :force => true do |t|
   t.string   "question"
   t.datetime "created_at"
   t.datetime "updated_at"
  end

  create_table "comboboxselects", :force => true do |t|
   t.integer  "combobox_id"
   t.string   "answer"
   t.datetime "created_at"
   t.datetime "updated_at"
  end

Output:

class ComboboxesController < ApplicationController
 active_scaffold :combobox do |config|
   config.list.columns = [:id, :question]
   config.columns = [:question, :comboboxselects]
 end
end

class ComboboxselectsController < ApplicationController
 active_scaffold :comboboxselect  do |config|
   config.list.columns = [:id, :combobox, :answer]
   config.columns = [:answer]
 end
end

Answer 1

First, all fields referenced in config.list.columns have to be included in config.columns (any explicitly-defined config.*.columns fields must be subsets of config.columns).

Then, in each model that does not already have a name or title field or method, you have to declare this custom method:

class Comboboxselect < ActiveRecord::Base
 belongs_to :combobox
 def to_label
  "#{answer}" 
 end
end

See ActiveScaffold documentation: Describing Records: to_label