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エラーのスクショの追加、ファイル名の追加

2021/04/17 10:31

投稿

ttt452

スコア4

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@@ -14,47 +14,61 @@
+![イメージ説明](294076832e298c61c006e1f719bbcf7f.jpeg)
+### 該当のソースコード
-```エラー
+```routes
-NoMethodError in Books#create
+Rails.application.routes.draw do
+  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
+  get '' => 'homes#top'
+  get 'books' => 'books#index'
+  post 'books' => 'books#create'
+  get 'books/:id' => 'books#show', as: 'book'
-Showing /home/ec2-user/environment/bookers/app/views/books/index.html.erb where line #23 raised:
+  get 'books/:id/edit' => 'books#edit', as: 'edit_book'
+  patch 'books/:id' => 'books#update', as: 'update_book'
-undefined method `each' for nil:NilClass
+  get 'books/:id/update' => 'books#update'
+  delete 'books/:id' => 'books#destroy', as: 'destroy_book'
+end
 ```
-### 該当のソースコード
-```routes.rb
+```modelBook
+class Book < ApplicationRecord
-Rails.application.routes.draw do
+   validates :title, presence: true
-  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
-  get '' => 'homes#top'
+   validates :body, presence: true
-  get 'books' => 'books#index'
-  post 'books' => 'books#create'
-  get 'books/:id' => 'books#show', as: 'book'
-  get 'books/:id/edit' => 'books#edit', as: 'edit_book'
-  patch 'books/:id' => 'books#update', as: 'update_book'
-  get 'books/:id/update' => 'books#update'
-  delete 'books/:id' => 'books#destroy', as: 'destroy_book'
 end
@@ -62,284 +76,272 @@
-```models/book.rb
+```booksController
-class Book < ApplicationRecord
+class BooksController < ApplicationController
+  def new
+  end
+  def index
+    @books = Book.all
+    @book = Book.new
+  end
+  def show
+    @book = Book.find(params[:id])
+  end
+  def edit
+    @book = Book.find(params[:id])
+  end
+  def destroy
+    book = Book.find(params[:id])
+    book.destroy
+    flash[:success] = "Book was successfully destroyed."
+    redirect_to books_path
+  end
+  def create
+    book = Book.new(book_params)
+    if book.save
+      flash[:success] = "Book was successfully created."
+      redirect_to "/books/#{book.id}"
+    else
+      # flash.now[:danger] = "Failed to save."
-   validates :title, presence: true
+      #render "/books"
+      render :index
+    end
+  end
+  def update
+    book = Book.find(params[:id])
+    if book.update(book_params)
+      flash[:success] = "Book was successfully updated."
+      redirect_to "/books/#{book.id}"
+    else
+      flash.now[:danger] = "Failed to update."
+      render "/books"
+    end
+  end
+  private
+  def book_params
-   validates :body, presence: true
+    params.require(:book).permit(:title, :body)
+  end
 end
 ```
-```books_controller.rb
-class BooksController < ApplicationController
-  def new
-  end
-  def index
-    @books = Book.all
-    @book = Book.new
-  end
-  def show
-    @book = Book.find(params[:id])
-  end
-  def edit
-    @book = Book.find(params[:id])
-  end
-  def destroy
-    book = Book.find(params[:id])
-    book.destroy
-    flash[:success] = "Book was successfully destroyed."
-    redirect_to books_path
-  end
-  def create
-    book = Book.new(book_params)
-    if book.save
-      flash[:success] = "Book was successfully created."
-      redirect_to "/books/#{book.id}"
-    else
-      # flash.now[:danger] = "Failed to save."
-      #render "/books"
-      render :index
-    end
-  end
-  def update
-    book = Book.find(params[:id])
-    if book.update(book_params)
-      flash[:success] = "Book was successfully updated."
-      redirect_to "/books/#{book.id}"
-    else
-      flash.now[:danger] = "Failed to update."
-      render "/books"
-    end
-  end
-  private
-  def book_params
-    params.require(:book).permit(:title, :body)
-  end
-end
+```index
+    <div class="notifications">
+        <% flash.each do |message_type, message| %>
+            <%= message %>
+        <% end %>
+    </div>
+    <h1>Books</h1>
+    <!-- 一覧表示 -->
+    <table style="table-layout: fixed;">
+        <tr>
+            <th>Title</th>
+            <th>Body</th>
+            <th colspan="3"></th>
+        </tr>
+        <% @books.each do |book| %>
+            <tr>
+                <td><%= book.title %></td>
+                <td><%= book.body %></td>
+                <!--<td><a class="show" href="/books/">Show</a></td>-->
+                <td><%= link_to "Show", "/books/#{book.id}" %></td>
+                <td><%= link_to "Edit", "/books/#{book.id}/edit" %></td>
+                <td><%= link_to "Destroy", destroy_book_path(book.id), method: :delete, "data-confirm" => "Are you sure?" %></td>
+            </tr>
+        <% end %>
+    </table>
+    <% if @book.errors.any? %>
+        <%= @book.errors.count %>件のエラーが発生しました
+        <% @book.errors.full_messages.each do |message| %>
+            <%= message %>
+        <% end %>
+    <% end %>
+    <!-- 新規投稿 -->
+    <%= form_with model:@book, url:'/books', local:true do |f| %>
+        <div class="new-book">
+            <h2>New book</h2>
+            <p>Title</p>
+            <%= f.text_field :title %>
+            <p>Body</p>
+            <%= f.text_area :body %>
+            <div>
+                <%= f.submit 'Create Book' %>
+            </div>
+        </div>
+    <% end %>
 ```
-```index.html.erb
-    <div class="notifications">
-        <% flash.each do |message_type, message| %>
-            <%= message %>
-        <% end %>
-    </div>
-    <h1>Books</h1>
-    <!-- 一覧表示 -->
-    <table style="table-layout: fixed;">
-        <tr>
-            <th>Title</th>
-            <th>Body</th>
-            <th colspan="3"></th>
-        </tr>
-        <% @books.each do |book| %>
-            <tr>
-                <td><%= book.title %></td>
-                <td><%= book.body %></td>
-                <!--<td><a class="show" href="/books/">Show</a></td>-->
-                <td><%= link_to "Show", "/books/#{book.id}" %></td>
-                <td><%= link_to "Edit", "/books/#{book.id}/edit" %></td>
-                <td><%= link_to "Destroy", destroy_book_path(book.id), method: :delete, "data-confirm" => "Are you sure?" %></td>
-            </tr>
-        <% end %>
-    </table>
-    <% if @book.errors.any? %>
-        <%= @book.errors.count %>件のエラーが発生しました
-        <% @book.errors.full_messages.each do |message| %>
-            <%= message %>
-        <% end %>
-    <% end %>
-    <!-- 新規投稿 -->
-    <%= form_with model:@book, url:'/books', local:true do |f| %>
-        <div class="new-book">
-            <h2>New book</h2>
-            <p>Title</p>
-            <%= f.text_field :title %>
-            <p>Body</p>
-            <%= f.text_area :body %>
-            <div>
-                <%= f.submit 'Create Book' %>
-            </div>
-        </div>
-    <% end %>
-```
 ### 試したこと