質問編集履歴
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### 該当のソースコード
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```ruby
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``> ``````**books_controller.rb**
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def top
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```
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**__routes.rb__**
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```
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引用テキスト
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**__routes.rb__**
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Rails.application.routes.draw do
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resources :books
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**index.html.erb
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***__*index.html.erb__**
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<h1>Books</h1>
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new.html.erb**
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routes.rb
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**__routes.rb__**
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Rails.application.routes.draw do
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test
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class BooksController < ApplicationController
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def top
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1
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コード
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``> ``````**books_controller.rb**
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class BooksController < ApplicationController
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def top
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end
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def index
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@books = Book.all
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end
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def show
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@book = Book.find(params[:id])
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end
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def new
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@book = Book.new
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end
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def create
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@book = Book.new(book_params)
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if @book.save
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flash[:notice] ="Book was successfully created."
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redirect_to book_path(@book)
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else
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render "new"
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end
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end
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def edit
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@book = Book.find(params[:id])
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end
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def update
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@book = Book.find(params[:id])
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if @book.update(book_params)
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flash[:notify] = "Book was successfully updated."
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redirect_to book_path(@book)
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else
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render "index"
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end
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end
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def destroy
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@book = Book.find(params[:id])
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@book.destroy
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if @book.destroy
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flash[:message] = "Book was successfully destroyed."
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redirect_to books_path
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end
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end
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private
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def book_params
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params.permit(:title, :body)
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end
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end
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**index.html.erb
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**
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<h1>Books</h1>
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<div class = "wrapp">
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<table>
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<tr>
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<td class = "data">Title</td>
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<td class = "data1">Body</td>
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</tr>
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<% @books.each do |book| %>
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<tr>
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<td><%= book.title %></td>
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<td><%= book.body %></td>
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<td><%= link_to 'Show', book_path(book.id), method: :get %></td>
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<td><%= link_to 'Edit', book_path(book.id), method: :get %></td>
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<td><%= link_to 'destroy',book_path(book.id),method: :delete, data: {confirm:"Are you sure?"}%></td>
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</tr>
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<% end %>
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</table>
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<%= form_with model:@book, local:true do |f| %>
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<h1>New book</h1>
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<h4>Title</h4>
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<%= f.text_field :title %>
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<h4>Body</h4>
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<%= f.text_area :body %>
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<%= f.submit 'create book' %>
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<% end %>
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</div>
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**
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new.html.erb**
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<%= form_with model:@book, local:true do |f| %>
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<% if @book.errors.any? %>
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<div class = "title">
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<ul>
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<h3><span = class = "warn"><%= @book.errors.count %> error prohibited this book from being saved:</h3>
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<h3><% @book.errors.full_messages.each do |message| %></h3>
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<li><%= message %></li>
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<% end %>
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</ul>
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</div>
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<% end %>
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<% end %>
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routes.rb
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Rails.application.routes.draw do
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resources :books
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delete 'books/:id', to: 'books#destroy'
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**# For details on the DSL available within this file, see **http://guides.rubyonrails.org/routing.html
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root to: 'books#top'
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end
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266
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|
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267
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+
ここに言語を入力
|
|
268
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+
|
|
37
269
|
```
|
|
38
270
|
|
|
39
|
-
**books_controller.rb**
|
|
40
|
-
|
|
41
|
-
class BooksController < ApplicationController
|
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42
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-
|
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43
|
-
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44
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-
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45
|
-
|
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271
|
+
引用テキスト
|
|
46
|
-
|
|
272
|
+
|
|
47
|
-
|
|
273
|
+
```
|
|
48
|
-
|
|
49
|
-
|
|
50
|
-
|
|
51
|
-
def index
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52
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-
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53
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@books = Book.all
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-
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end
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def show
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@book = Book.find(params[:id])
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end
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def new
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@book = Book.new
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end
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-
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def create
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@book = Book.new(book_params)
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if @book.save
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flash[:notice] ="Book was successfully created."
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82
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-
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83
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redirect_to book_path(@book)
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84
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-
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85
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else
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86
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-
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87
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render "new"
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88
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89
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end
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|
90
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-
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91
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end
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92
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-
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93
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def edit
|
|
94
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-
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95
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@book = Book.find(params[:id])
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|
96
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-
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97
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end
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98
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-
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|
99
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|
100
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-
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|
101
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def update
|
|
102
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103
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-
@book = Book.find(params[:id])
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|
104
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-
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|
105
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-
if @book.update(book_params)
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|
106
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-
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|
107
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-
flash[:notify] = "Book was successfully updated."
|
|
108
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-
|
|
109
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-
redirect_to book_path(@book)
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|
110
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-
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111
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else
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112
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113
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render "index"
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114
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115
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end
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116
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end
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|
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119
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120
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def destroy
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|
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123
|
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@book = Book.find(params[:id])
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125
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@book.destroy
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126
|
-
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127
|
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if @book.destroy
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128
|
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129
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flash[:message] = "Book was successfully destroyed."
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|
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131
|
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redirect_to books_path
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|
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-
end
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|
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135
|
-
end
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136
|
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|
-
private
|
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138
|
-
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139
|
-
def book_params
|
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|
-
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|
141
|
-
params.permit(:title, :body)
|
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|
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|
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|
-
end
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|
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|
|
145
|
-
end
|
|
146
|
-
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|
147
|
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|
148
|
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|
149
|
-
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|
150
|
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|
151
|
-
**index.html.erb
|
|
152
|
-
|
|
153
|
-
**
|
|
154
|
-
|
|
155
|
-
<h1>Books</h1>
|
|
156
|
-
|
|
157
|
-
<div class = "wrapp">
|
|
158
|
-
|
|
159
|
-
<table>
|
|
160
|
-
|
|
161
|
-
<tr>
|
|
162
|
-
|
|
163
|
-
<td class = "data">Title</td>
|
|
164
|
-
|
|
165
|
-
<td class = "data1">Body</td>
|
|
166
|
-
|
|
167
|
-
</tr>
|
|
168
|
-
|
|
169
|
-
<% @books.each do |book| %>
|
|
170
|
-
|
|
171
|
-
<tr>
|
|
172
|
-
|
|
173
|
-
<td><%= book.title %></td>
|
|
174
|
-
|
|
175
|
-
<td><%= book.body %></td>
|
|
176
|
-
|
|
177
|
-
<td><%= link_to 'Show', book_path(book.id), method: :get %></td>
|
|
178
|
-
|
|
179
|
-
<td><%= link_to 'Edit', book_path(book.id), method: :get %></td>
|
|
180
|
-
|
|
181
|
-
<td><%= link_to 'destroy',book_path(book.id),method: :delete, data: {confirm:"Are you sure?"}%></td>
|
|
182
|
-
|
|
183
|
-
</tr>
|
|
184
|
-
|
|
185
|
-
<% end %>
|
|
186
|
-
|
|
187
|
-
</table>
|
|
188
|
-
|
|
189
|
-
|
|
190
|
-
|
|
191
|
-
<%= form_with model:@book, local:true do |f| %>
|
|
192
|
-
|
|
193
|
-
<h1>New book</h1>
|
|
194
|
-
|
|
195
|
-
<h4>Title</h4>
|
|
196
|
-
|
|
197
|
-
<%= f.text_field :title %>
|
|
198
|
-
|
|
199
|
-
<h4>Body</h4>
|
|
200
|
-
|
|
201
|
-
|
|
202
|
-
|
|
203
|
-
<%= f.text_area :body %>
|
|
204
|
-
|
|
205
|
-
|
|
206
|
-
|
|
207
|
-
<%= f.submit 'create book' %>
|
|
208
|
-
|
|
209
|
-
<% end %>
|
|
210
|
-
|
|
211
|
-
|
|
212
|
-
|
|
213
|
-
</div>
|
|
214
|
-
|
|
215
|
-
**
|
|
216
|
-
|
|
217
|
-
new.html.erb**
|
|
218
|
-
|
|
219
|
-
|
|
220
|
-
|
|
221
|
-
<%= form_with model:@book, local:true do |f| %>
|
|
222
|
-
|
|
223
|
-
|
|
224
|
-
|
|
225
|
-
<% if @book.errors.any? %>
|
|
226
|
-
|
|
227
|
-
<div class = "title">
|
|
228
|
-
|
|
229
|
-
<ul>
|
|
230
|
-
|
|
231
|
-
<h3><span = class = "warn"><%= @book.errors.count %> error prohibited this book from being saved:</h3>
|
|
232
|
-
|
|
233
|
-
<h3><% @book.errors.full_messages.each do |message| %></h3>
|
|
234
|
-
|
|
235
|
-
<li><%= message %></li>
|
|
236
|
-
|
|
237
|
-
<% end %>
|
|
238
|
-
|
|
239
|
-
</ul>
|
|
240
|
-
|
|
241
|
-
</div>
|
|
242
|
-
|
|
243
|
-
<% end %>
|
|
244
|
-
|
|
245
|
-
|
|
246
|
-
|
|
247
|
-
<% end %>
|
|
248
|
-
|
|
249
|
-
|
|
250
|
-
|
|
251
|
-
routes.rb
|
|
252
|
-
|
|
253
|
-
Rails.application.routes.draw do
|
|
254
|
-
|
|
255
|
-
resources :books
|
|
256
|
-
|
|
257
|
-
delete 'books/:id', to: 'books#destroy'
|
|
258
|
-
|
|
259
|
-
**# For details on the DSL available within this file, see **http://guides.rubyonrails.org/routing.html
|
|
260
|
-
|
|
261
|
-
root to: 'books#top'
|
|
262
|
-
|
|
263
|
-
end
|
|
264
|
-
|
|
265
|
-
|
|
266
|
-
|
|
267
|
-
|
|
268
|
-
|
|
269
|
-
|
|
270
|
-
|
|
271
|
-
|
|
272
274
|
|
|
273
275
|
|
|
274
276
|
|