Ruby on Rails 未定义方法“products_path”路由问题

Question

我已经有一段时间没有在 Rails 中工作了，并且在正确设置路线方面遇到了一些问题。任何帮助将不胜感激。

URL: http://localhost:3000/admin/products/new

Error: undefined method `products_path' for #<#<Class:0x007f9f569d0150>:0x007f9f578ccb18>

耙路线

admin_products     GET    /admin/products(.:format)          admin/products#index
                   POST   /admin/products(.:format)          admin/products#create
new_admin_product  GET    /admin/products/new(.:format)      admin/products#new
edit_admin_product GET    /admin/products/:id/edit(.:format) admin/products#edit
admin_product GET         /admin/products/:id(.:format)      admin/products#show
                   PUT    /admin/products/:id(.:format)      admin/products#update
                   DELETE /admin/products/:id(.:format)      admin/products#destroy

路线.rb

Aneprize::Application.routes.draw do
  devise_for :admins, :users

  namespace :admin do
    match '/', to: 'dashboard#index', as: '/'

    authenticated :admin do
      root to: 'dashboard#index', as: :root

      resources :products do
        resource  :contest
        resources :bids
        resources :photos
        resources :tags
      end
    end
  end

  root to: 'contests#index'
end

产品.rb

class Product < ActiveRecord::Base
  attr_accessible :name, :retail_price, :short_description, :long_description, :weight

  has_one  :contest, dependent: :destroy
  has_many :photos,  dependent: :destroy
  has_many :bids,    dependent: :destroy
  has_many :tags

  validates :name, :short_description, :long_description, presence: true
  validates :retail_price, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
  validates :weight, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 1 }
end

竞赛.rb

class Contest < ActiveRecord::Base
  attr_accessible :product_id, :duration

  belongs_to :product, dependent: :destroy

  validates :product_id, presence: true, numericality: { only_integer: true, greater_than: 0 }
  validates :duration,   presence: true, numericality: { only_integer: true, greater_than: 2 }
end

产品.rb

class Photo < ActiveRecord::Base
  attr_accessible :product_id, :image_url

  belongs_to :product

  validates :product_id, presence: true, numericality: { only_integer: true, greater_than: 0 }
  validates :image_url,  presence: true, format: { with: /^[^-\d].+/ }
end

出价.rb

class Bid < ActiveRecord::Base
  attr_accessible :product_id, :account_id, :amount

  belongs_to :account
  belongs_to :product, dependent: :destroy

  validates :account_id, :product_id, :amount, presence: true, numericality: { only_integer: true, greater_than: 0 }
end

标签.rb

class Tag < ActiveRecord::Base
  attr_accessible :name, :product_id

  belongs_to :product

  validates :name, presence: true, format: { with: /^\D+$/ }
  validates :product_id, presence: true, numericality: { only_integer: true, greater_than: 0 }
end

Answer 1

当您遇到错误时，URL: http://localhost:3000/admin/products/new您的表单生成器应该会遇到一些问题。

虽然您在:admin命名空间中有产品资源，但您在构建表单时应该考虑到这一事实。正确的例子是：

<%= form_for [:admin, @product] do |f| %>
  ... # whatever
<% end %>

而不是仅仅

<%= form_for @product do |f| %>
  ... # whatever
<% end %>