Question

我遇到了在管理员命名空间中创建嵌套资源的问题。我对命名空间有些新意。我已经阅读了Stack上的几篇文章，但无济于事，也许我正在实现这个错误。

我有一个管理模型（设计），我正在尝试将地址嵌套到我创建的自定义用户显示页面，这就是问题所在。

尝试为管理员创建新地址时，我在提交表单时收到此错误：

ActionController::UrlGenerationError at /admin/admins/2CE0/addresses
No route matches {:action=>"show", :admin_id=>"2CE0", :controller=>"admin/admins/admin/addresses"} missing required keys: [:id]

更好错误的屏幕截图页面：

我的Routes.rb

  namespace :admin do
    devise_for :admins, controllers: { sessions: 'admin/admins/sessions', passwords: 'admin/admins/passwords', registrations: 'admin/admins/registrations', confirmations: 'admin/admins/confirmations', unlocks: 'admin/admins/unlocks', shared: 'admin/admins/shared' }

    resources :admins, controller: 'admins/admin', shallow: true do
      resources :addresses, except: [:index], controller: 'admins/admin/addresses'
    end

  end

  ###Admin Authentication Scope###
  devise_scope :admin do
    authenticated  do
      root to: 'admin/admin_static#home', as: 'authenticated_admin'
    end
  end

Rake Routes输出：

  admin_admin_addresses POST   /admin/admins/:admin_id/addresses(.:format)     admin/admins/admin/addresses#create
new_admin_admin_address GET    /admin/admins/:admin_id/addresses/new(.:format) admin/admins/admin/addresses#new
     edit_admin_address GET    /admin/addresses/:id/edit(.:format)             admin/admins/admin/addresses#edit
          admin_address GET    /admin/addresses/:id(.:format)                  admin/admins/admin/addresses#show
                        PATCH  /admin/addresses/:id(.:format)                  admin/admins/admin/addresses#update
                        PUT    /admin/addresses/:id(.:format)                  admin/admins/admin/addresses#update
                        DELETE /admin/addresses/:id(.:format)                  admin/admins/admin/addresses#destroy

管理员模型：

class Admin < ActiveRecord::Base
  before_create :generate_admin_ident

  # Devise Modules
  devise :database_authenticatable, :registerable,:recoverable, :rememberable,
         :trackable, :validatable, :confirmable, :lockable, :timeoutable

  # Model Relationships
  has_many :addresses, dependent: :destroy

  # Model Validations
  validates_uniqueness_of :admin_ident

  #Unique Identifier Generation
  def generate_admin_ident
    begin
      self.admin_ident = SecureRandom.hex(2).upcase
      other_admin = Admin.find_by(admin_ident: self.admin_ident)
    end while other_admin
  end

  # Vanity URL
  def to_param
    admin_ident
  end

end

管理员控制器： - 请注意，这仅控制自定义管理员索引并显示页面

class Admin::Admins::AdminController < ApplicationController
  before_action :authenticate_admin_admin!

  def index
    @admins = Admin.all
  end

  def show
    @admin = Admin.find_by_admin_ident(params[:id])
    @addresses = @admin.addresses
  end

  def new
  end

  def edit
  end

  def create
  end

  def update
  end

  def destroy
  end

end

地址模型：

class Address < ActiveRecord::Base
  before_create :generate_address_ident

  # Model Relationships
  belongs_to :admin

  # Model Validations
  validates_uniqueness_of :address_ident

  #Unique Identifier Generation
  def generate_address_ident
    begin
      self.address_ident = SecureRandom.hex(4).upcase
      other_address = Address.find_by(address_ident: self.address_ident)
    end while other_address
  end

  # Vanity URL
  def to_param
    address_ident
  end

end

地址控制器：

class Admin::Admins::Admin::AddressesController < ApplicationController
  before_action :authenticate_admin_admin!
  before_action :set_address, only: [:show, :edit, :update, :destroy]

  # GET /addresses
  # GET /addresses.json
  def index
    @addresses = Address.all
  end

  # GET /addresses/1
  # GET /addresses/1.json
  def show
  end

  # GET /addresses/new
  def new
    @admin = Admin.find(params[:admin_id])
    @address = Address.new
  end

  # GET /addresses/1/edit
  def edit
  end

  # POST /addresses
  # POST /addresses.json
  def create
    @admin = Admin.find_by_id(params[:admin_id])
    @address = Address.new(address_params)

    respond_to do |format|
      if @address.save
        format.html { redirect_to admin_admin_address_url[:admin, @admins, @address], notice: 'Address was successfully created.' }
        format.json { render :show, status: :created, location: @address }
      else
        format.html { render :new }
        format.json { render json: @address.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /addresses/1
  # PATCH/PUT /addresses/1.json
  def update
    respond_to do |format|
      if @address.update(address_params)
        format.html { redirect_to @address, notice: 'Address was successfully updated.' }
        format.json { render :show, status: :ok, location: @address }
      else
        format.html { render :edit }
        format.json { render json: @address.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /addresses/1
  # DELETE /addresses/1.json
  def destroy
    @address.destroy
    respond_to do |format|
      format.html { redirect_to addresses_url, notice: 'Address was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_address
      @address = Address.find_by_address_ident(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def address_params
      params.require(:address).permit(:admin_id, :street_number, :street_name, :street_type, :grid, :city, :province, :postal_code, :current)
    end
end

最后在尝试创建新的管理地址时Rails服务器控制台输出：

Started POST "/admin/admins/2CE0/addresses" for ::1 at 2016-05-25 22:54:40 -0600
Processing by Admin::Admins::Admin::AddressesController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"i+B7DS85BtWIA9xsAQnzPByayTZ9Z4fI4rTkEcBqfgkQw9CFTFUMaRhUDyQKYgzA9SPNYWJIkyU8lcnyODYKuw==", "address"=>{"admin_id"=>"", "street_number"=>"1234", "street_name"=>"something", "street_type"=>"AVE", "grid"=>"NW", "city"=>"YYC", "province"=>"AB", "postal_code"=>"123 456", "current"=>"0"}, "commit"=>"Create Address", "admin_id"=>"2CE0"}
  Admin Load (0.2ms)  SELECT  "admins".* FROM "admins" WHERE "admins"."id" = $1  ORDER BY "admins"."id" ASC LIMIT 1  [["id", 1]]
  Admin Load (0.4ms)  SELECT  "admins".* FROM "admins" WHERE "admins"."id" = $1 LIMIT 1  [["id", 2]]
   (0.1ms)  BEGIN
  Address Exists (0.2ms)  SELECT  1 AS one FROM "addresses" WHERE "addresses"."address_ident" IS NULL LIMIT 1
  Address Load (0.1ms)  SELECT  "addresses".* FROM "addresses" WHERE "addresses"."address_ident" = $1 LIMIT 1  [["address_ident", "1F185CE6"]]
  SQL (0.1ms)  INSERT INTO "addresses" ("street_number", "street_name", "street_type", "grid", "city", "province", "postal_code", "current", "created_at", "updated_at", "address_ident") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) RETURNING "id"  [["street_number", "1234"], ["street_name", "something"], ["street_type", "AVE"], ["grid", "NW"], ["city", "YYC"], ["province", "AB"], ["postal_code", "123 456"], ["current", "f"], ["created_at", "2016-05-26 04:54:40.377296"], ["updated_at", "2016-05-26 04:54:40.377296"], ["address_ident", "1F185CE6"]]
   (5.9ms)  COMMIT
Completed 500 Internal Server Error in 39ms (ActiveRecord: 9.5ms)

ActionController::UrlGenerationError - No route matches {:action=>"show", :admin_id=>"2CE0", :controller=>"admin/admins/admin/addresses"} missing required keys: [:id]:

提前谢谢大家，我在这里遇到困难，不知道我在哪里跌落兔子洞！请询问您是否需要更多信息，我尽可能多地提供！

编辑＃1 - 添加控制器树的照片

Answer 1

如果您不熟悉名称空间，我建议您创建一个新的应用程序，然后使用脚手架生成器在管理员名称空间中创建一个地址。然后看看脚手架构建对象的方式，并将其与您拥有的对象进行比较。

rails new name_space_play
cd name_space_play
rails g scaffold Admin::Address street_number street_name street_type grid city province postal_code current

Scaffold将按照rails开发人员期望构建它们的方式构建文件，并且应该向您展示如何执行这些文件。

管理命名空间，嵌套资源不保存

1 个答案: