显示简单的搜索表单

Question

我还是 RoR 的新手，我正在尝试向我的应用程序添加一个简单的搜索表单。我就是这样进行的。

 class BooksController < ApplicationController
  before_action :set_book, only: [:show, :edit, :update, :destroy]


  def index
     if params[:search]
       @users = User.search(params[:search]).order("created_at DESC")
     else
       @users = User.order('created_at DESC')
     end

  end


 def new
  @book= Book.new

  end
  def create
    @book= Book.new(books_params)
    if @book.save
       redirect_to admin_manage_path
    else
     render 'new'
    end

   end

   def list
    @books= Book.all
    end

   def show

   end



  private

   def set_book
   @book = Book.find(params[:id])
   end

  def books_params
     params.require(:book).permit(:title, :author, :price, :resume)

   end
 end

我的书本模型

 class Book < ActiveRecord::Base

   def self.search(query)
    where('title like ?', "%#{query}%")
   end

   end

显示搜索表单的我的 list.html.erb：

 <% if current_user.present? %>
Welcome <%= current_user.pseudo %> | <%= link_to 'Déconnexion' , user_logout_path %>
 <% end %>
<br>
<%= form_tag(books_path, :method => "get", id: "search-form") do %>
<%= text_field_tag :search, params[:search], placeholder: "Search books" %>
<%= submit_tag "Search", :name => nil %>
<% end %>
<br>

还有我的 index.html.erb 应该在哪里显示搜索结果：

<% @books.each do |b| %>

显示的错误是：

找不到没有 ID 的书

我不明白它指的是控制器#show 方法 ActiveRecord::RecordNotFound in BooksController#show

Answer 1

我找到了错误的来源，我忘了指定合适的路线