Question

我有三个班级：

class Valoration < ActiveRecord::Base
    validates :points, presence:true, numericality: { only_integer: true, greater_than_or_equal_to: 0, less_than_or_equal_to: 100 }
    belongs_to :user
    belongs_to :hability
end
#################################################################
class Hability < ActiveRecord::Base
    validates :name, presence: true, length: { minimum: 4, maximum: 16 }
    has_many :valorations
end
#################################################################
  class User < ActiveRecord::Base
    validates :password, presence: true, confirmation: {strict: true}
    #validates :password_confirmation, presence: true
    validates :telephone, uniqueness: true, presence: true, numericality: { only_integer: true }, presence: true, length: { minimum: 9, maximum: 9 }
    validates :name, presence: true, length: { minimum: 4, maximum: 30 }, format: { with: /^[\w\s-]*/u, multiline: true,
                                                                                    message: 'only allows letters' }
    has_many :valorations
  end

这是db方案，让事情清楚

        ActiveRecord::Schema.define(version: 20150709141437) do

      create_table "habilities", force: :cascade do |t|
        t.string   "name"
        t.datetime "created_at", null: false
        t.datetime "updated_at", null: false
      end

      create_table "users", force: :cascade do |t|
        t.string   "name"
        t.string   "password"
        t.integer  "telephone"
        t.datetime "created_at", null: false
        t.datetime "updated_at", null: false
      end

      create_table "valorations", force: :cascade do |t|
        t.integer  "user_id"
        t.integer  "hability_id"
        t.integer  "points"
        t.string   "date"
        t.datetime "created_at",  null: false
        t.datetime "updated_at",  null: false
      end

      add_index "valorations", ["hability_id"], name: "index_valorations_on_hability_id"
      add_index "valorations", ["user_id"], name: "index_valorations_on_user_id"

    end

Valorations是用户的资源：

  resources :users do
    resources :valorations
  end

在users / show.html.erb中，我有以下链接：

<%= link_to 'View valorations on this user', user_valoration_path%>
<%= link_to 'Valorate user:',new_user_valoration_path(@user)%>

但是当我加载页面时，它给了我这个错误：

Showing /home/manuel/Documentos/ComoMeVeis/app/views/users/show.html.erb where line #11 raised:

No route matches {:action=>"show", :controller=>"valorations", :id=>"2"} missing required keys: [:user_id]

我认为表关联有问题，因为它说：valorations：id = 2，但是它说id = 2 我是rails的新手，我不知道如何解决这个问题，如果您需要有关代码的更多信息，请发表评论，欢迎任何帮助！

Answer 1

以下路线

resources :users do
  resources :valorations
end

产生

GET /users/:user_id/valorations/:id
GET /users/:user_id/valorations

和其他一些与此答案无关的

问题出在link_to

上

<%= link_to 'View valorations on this user', user_valoration_path%>

user_valoration_path会尝试显示一个用户值，这意味着您需要显示user和valoration。

我从链接文本中假设您要为用户显示所有的值，因此您需要使用以下

user_valorations_path(@user)

这将指向路径/users/1/valorations而不是/users/1/valorations/...

为什么我在尝试创建link_to时出现此错误

1 个答案: