如何处理ActiveAdmin中的多个嵌套资源？

我在Rails（3.1.1）中使用ActiveAdmin（0.4.0）。如何处理ActiveAdmin中的多个嵌套资源？

我找不到一个很好的方法/破解来处理多个嵌套的资源。

Considerer 3个型号为：

class Program < ActiveRecord::Base 
    has_many :knowledges, :dependent => :destroy 
end 

class Knowledge < ActiveRecord::Base 
    belongs_to :program 
    has_many :steps, :dependent => :destroy 
end 

class Step < ActiveRecord::Base 
    belongs_to :knowledge 
end

而且ActiveAdmin资源：

ActiveAdmin.register Program do 
end 

ActiveAdmin.register Knowledge do 
    belongs_to :program 
end 

ActiveAdmin.register Step do 
    belongs_to :knowledge 
end

在routes.rb中：

namespace :admin do 
    resources :programs do 
    resources :knowledges do 
     resources :steps 
    end 
    end 
end

这里的网址，程序的索引，知识和步骤：
http://localhost:3000/admin/programs
http://localhost:3000/admin/programs/1/knowledges
http://localhost:3000/admin/programs/1/knowledges/1/steps

的“知识”管理员，但“步骤”管理员不保持嵌套的情况下没有问题。

例如，当我使用步骤＃索引过滤器我重定向到：
http://localhost:3000/admin/knowledges/1/steps?params ...
但它必须是：
http://localhost:3000/admin/programs/1/knowledges/1/steps?params ...当我创建

同样的问题新资源：
http://localhost:3000/admin/knowledges/1/steps/new
相反的：
http://localhost:3000/admin/programs/1/knowledges/1/steps/new

相同的p roblem与面包屑......等等......

我已经在应用/管理/ steps.rb到目前为止已经试过：

ActiveAdmin.register Step do 

    belongs_to :knowledge 

    config.clear_action_items! 
    action_item :only => :index do 
    link_to('Create Step', new_admin_program_knowledge_step_path(knowledge.program.id, knowledge.id)) 
    end 

    index do 
    column :id 
    column :knowledge 
    column :title 
    column "Actions" do |step| 
     link_to("Voir", admin_program_knowledge_step_path(step.knowledge.program, step.knowledge, step), :class => "member_link show_link") +\ 
     link_to("Editer", edit_admin_program_knowledge_step_path(step.knowledge.program, step.knowledge, step), :class => "edit_knowledge member_link edit_link", :id => "knowledge_#{dom_id(knowledge)}") +\ 
     link_to("Supprimer", admin_program_knowledge_step_path(step.knowledge.program, step.knowledge, step), :class => "member_link delete_link", :method => :delete, :confirm => "Delete?") 
    end 
    end 

    filter :id 
    filter :title 
    filter :subtitle 
    filter :stage_type 
    filter :order_by 
    filter :created_at 
    filter :updated_at 

    form :partial => "form" 

end

而且在应用程序/视图/管理/措施/ _form。 html.erb我必须使用activeadmin formbuilder：

<%= semantic_form_for(resource, :url => admin_program_knowledge_steps_path(resource.knowledge.program, resource.knowledge), :builder => ActiveAdmin::FormBuilder) do |f| 
    f.inputs "Step" do 
    f.input :knowledge, :as => :hidden 
    f.form_buffers.last << f.template.content_tag(:li, f.template.content_tag(:label, "Knowledge")+f.template.content_tag(:p, f.object.knowledge.title)) 
    f.input :title 
    f.input :order_by 
    end 
    f.buttons 
end %>

嗯......我被困。

如何处理这个很好？任何线索赞赏...

来源

2012-02-05 fro_oo