editでフォームを入力した際のupdateの反映

Question

前提・実現したいこと

updateを正常に機能させたい。

発生している問題・エラーメッセージ

editのフォーム画面で入力をしshowの画面へ移れるが、updateが反映されない。
エラーメッセージは出ていないです。

該当のソースコード

books_controller.rb

class BooksController < ApplicationController

  def index
    @books = Book.all
    @book = Book.new
  end

  def create
    @book = Book.new(book_params)
    if @book.save
      flash[:notice] = "Book was successfully created."
      redirect_to book_path(book.id)
    else
      @books=Book.all
      render action :index
    end
  end

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

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

  def update
    @book = Book.find(params[:id])
    if @book.update(book_params)
      flash[:notice] = "Book was successfully updated."
      redirect_to book_path(@book)
    else
      @books=Book.all
      render action :edit
    end
  end

  def destroy
    book = Book.find(params[:id])
    book.destroy
    flash[:notice] = "Book was successfully destroyed."
    redirect_to books_path
  end

  private
  def book_params
    params.permit(:title, :body)
  end

end

index.html.erb

<h1>Books</h1>

<table>
  <tr>
    <th>
      Title
    </th>
    <th>Body</th>
  </tr>
  <% @books.each do |book| %>
    <tr>
      <th>
        <%= book.title %>
      </th>
      <th>
        <%= book.body %>
      </th>
      <th>
        <%= link_to "show", book_path(book.id) %>
      </th>
      <th>
        <%= link_to "edit", edit_book_path(book.id) %>
      </th>
      <th>
        <%= link_to "destroy", book_path(book.id) , method: :delete %>
      </th>
    </tr>
  <%end%>
</table>

<h1>New Book</h1>

<%= form_with model:@book, local:true do |f| %>

 <% if @book.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@book.errors.count, "error") %> prohibited this book from being saved:</h2>
      <ul>
        <% @book.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
　<% end %>

  <h4>Title</h4>
  <%= f.text_field :title %>

  <h4>Body</h4>
  <%= f.text_area :body %>

  <%= f.submit 'Create Book' %>

<% end %>

edit.html.erb

<h1>Editing Book</h1>

<%= form_with model:@book, local:true do |f| %>

  <% if @book.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@book.errors.count, "error") %> prohibited this book from being saved:</h2>
      <ul>
        <% @book.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
　<% end %>

  <h4>Title</h4>
  <%= f.text_field :title %>
  <h4>Body</h4>
  <%= f.text_area :body %>
  <%= f.submit 'Update Book' %>
<% end %>
<%= link_to "show", book_path(@book) %>
<%= link_to "Back", books_path %>

show.html.erb

<p>Title: <%= @book.title %></p>
<p>Body: <%= @book.body%></p>
<%= link_to "Edit", edit_book_path(@book) %>
<%= link_to "Back", books_path %>

Answer 1

params.permit(:title, :body) が違います
params.require(:book).permit(:title, :body)

Comments

[paserin]

ご指摘ありがとうございます！
解決致しました！