ruby-on-rails - 具有 2 深度关联的嵌套资源

问题描述

我正在尝试设置 Active Admin，以便 AdminUser（已登录）可以查看分配给他们的所有 ServiceUser 的列表，然后单击特定 ServiceUser 旁边的链接以查看他们创建的所有支持会话（针对该特定 ServiceUser ）。

模型：

class ServiceUser
  has_many :support_allocations
  has_many :admin_users, through: :support_allocations
  has_many :support_budgets

class AdminUser < ApplicationRecord
  has_many :support_allocations
  has_many :service_users, through: :support_allocations

class SupportAllocation < ApplicationRecord
  belongs_to :admin_user
  belongs_to :service_user
  has_many :support_sessions

class SupportSession < ApplicationRecord
  belongs_to :invoice, optional: true
  belongs_to :support_allocation
  has_one :service_user, through: :support_allocation
  has_one :admin_user, through: :support_allocation

我猜我需要让SupportSessions 成为ServiceUser 的嵌套资源，这样我就可以遵循restful 原则（即使用例如/service_users/1/support_sessions 的路由）。我设法像这样嵌套资源：

ActiveAdmin.register SupportSession do
  belongs_to :service_user

但我意识到省略了关键的连接表 SupportAllocation。此外，它不起作用！错误信息是：

NoMethodError in SupportSessionsController#index
undefined method `support_sessions' for #<ServiceUser:0x00007fe6316b9030> Did you mean? support_allocations

以前，我可以使用以下代码查看分配给 AdminUser 的所有 ServiceUser 的所有 SupportSession：

ActiveAdmin.register SupportSession do
super.includes(support_allocation: [:service_user, :admin_user])

这个问题是我想在 ServiceUser 和 AdminUser 之间的 SupportAllocation 关系的上下文中使用资源。因此，登录的 AdminUser 可以看到分配给他们的所有 ServiceUser 的索引列表（通过 SupportAllocation），然后移动到所选 ServiceUser 的所有 SupportSessions 的索引列表（从第一个列表中）。

嵌套资源在这里是正确的解决方案，还是有一种更简单的方法来拥有一个通用的 SupportSession 资源页面，该页面可以显示所有服务用户的 SupportSessions 或特定的服务用户（通过 URL 中的“id”）？我如何处理与中间表的这种棘手的两级关联？

非常感谢你的帮助。

这是我在 app/admin/ 中的 support_sessions.rb 控制器的代码

ActiveAdmin.register SupportSession do
  menu label: 'My sessions'
  #belongs_to :support_allocation
  belongs_to :service_user

  # Eager loading to speed up queries
  includes :service_user, :admin_user, :support_allocation

  sidebar :help, priority: 0 do
    "Need help? Email us at help@example.com"
  end

  # Default sort order
  config.sort_order = 'support_sessions.date_held_asc'

  controller do
    def scoped_collection
      #super.includes :support_allocation
      super.includes(support_allocation: [:service_user, :admin_user])
      #SupportSession.includes(support_allocation: [:service_user, :admin_user])
      #super.includes :service_user, :admin_user
    end
  end

  scope :all, :default => true
  scope :invoiced
  scope :uninvoiced

  index do
    selectable_column
    column 'Date held', :date_held

    #column 'Service user', :full_name, :sortable => 'service_users.family_name' do |ss|
      #service_user = ServiceUser.find(ss.support_allocation.service_user.service_user_id).full_name
      #ss.support_allocation.service_user
    #end

    #column 'Based at', sortable: 'support_allocation.service_user.organisation.org_name' do |ss|
      #ss.support_allocation.service_user.organisation.org_name
    #end

    column 'Venue', :venue

    #column 'Support worker', :full_name, :sortable => 'admin_users.family_name' do |ss|
      #support_worker = AdminUser.find(ss.admin_user_id).full_name
      #ss.support_allocation.admin_user
    #end

    actions
  end

  permit_params(:admin_user_id, :service_user_id, :venue, :mode_of_delivery, :date_held, :time_start, :time_end, :total_breaks, :status)

  form do |f|
    f.semantic_errors *f.object.errors.keys

    f.inputs 'Support session details' do
      # Code to check if creating a new record or editing an existing record:
      #if f.object.new_record?

      #if current_admin_user.super_admin == false
        # Pre-select only current support worker (so no other choices)
        #f.input :admin_user, :label => 'Support worker', as: :select, collection: AdminUser.where(super_admin: 0, #id: current_admin_user.id), include_blank: false
      #else
        # Otherwise list all support workers
        #f.input :admin_user, :label => 'Support worker', as: :select, collection: AdminUser.where(super_admin: 0), include_blank: true, allow_blank: false
      #end

      #f.input :support_allocation
      #f.input :service_user, :label => 'Service user', as: :select, collection: ServiceUser.all, include_blank: true, allow_blank: false

      f.input :mode_of_delivery, as: :select, collection: SupportSession.mode_of_deliveries.keys, include_blank: true, allow_blank: false

      f.input :venue, :label => 'Venue'
      f.input :date_held, :label => 'Date held', :as => :datepicker
      f.input :time_start, :label => 'Start time'
      f.input :time_end, :label => 'End time'
      f.input :total_breaks, :label => 'Total breaks (in minutes)', :input_html => { :value => '0' }

      if current_admin_user.super_admin == false
        f.input :status, as: :select, collection: SupportSession.statuses.keys, include_blank: true, allow_blank: false
      end
    end
    f.actions
  end


end

标签： ruby-on-railsrubyactiveadmincancancan

ruby-on-rails - 具有 2 深度关联的嵌套资源

问题描述

解决方案

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