Question

我正在构建一个RoR应用，用户可以点击图书类别将书籍列表添加到他们的个人资料中。我对这些东西有点新意，我现在对于下一步该去哪里感到有些困惑。

型号：

用户（来自Devise）
预订
Book_List（加入表格）

我有几千种不同类别的书。单击某个类别后，我希望将该类别的书籍添加到用户的个人资料页面。

这是我到目前为止所做的：

book.rb

class Book < ActiveRecord::Base
  has_many :book_lists
  has_many :users, :through => :book_lists
end

user.rb

class User < ActiveRecord::Base
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :book_lists
  has_many :books, :through => :book_lists

end

book_list.rb

class BookList < ActiveRecord::Base
  belongs_to :book
  belongs_to :user
end

devise_create_users.rb迁移

class DeviseCreateUsers < ActiveRecord::Migration
  def change
    create_table(:users) do |t|
    # i only included relevant to the question stuff here. 
    # Standard Devise stuff taken out.
      t.integer :user_id

图书迁移

class CreateBooks < ActiveRecord::Migration
  def change
    create_table :books do |t|
      t.string :category
      t.string :title
      t.integer :book_id
      t.timestamps
    end
  end
end

book_list迁移

class CreateBookLists < ActiveRecord::Migration
  def change
    create_table :book_lists do |t|
      t.timestamps
    end
  end
end

book_list_controller.rb

class BookListController < ApplicationController
  def save_book
    @saved_book = BookList.new(params[:saved_book]
    @saved_book.user = current_user
    @saved_book.save
  end
end

图书清单视图

<%= form_for BookList.new, :url => "/books/save_book" do |f| %>
  <%= f.hidden_field :book_id, :value => @book_id %>
  <%= f.submit "Save Books" %>
<% end %>

我应该添加什么才能让图书根据图书类别保存到用户的个人资料页面？

很抱歉，如果上述代码无论如何都是荒谬的。我从各个论坛拼凑起来。

编辑：

CodeApp::Application.routes.draw do

  devise_for :users, path_names: {sign_in: 'login', sign_out: 'logout'}
  get "profile", to: "profile#show"

  resources :books
  root "books#welcome"
  get "search", to: "search#index"
  get "about", to: "books#about"
  get "books", to: "books#index"
  post "save_book", to: "book_list#save_book"

Answer 1

此代码

<%= form_for BookList.new, :url => "/books/save_book" do |f| %>

应该是

<%= form_for @saved_book, :url => "/books/save_book" do |f| %>

添加具有特定类别的对象以连接表，然后在页面上显示

1 个答案: