refactor(book): Move book to Admin namespace

app/controllers/admin/books_controller.rb

@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+module Admin
+  class BooksController < ApplicationController
+    before_action :set_book, only: %i[show edit update destroy]
+
+    def index
+      @q = Book.ransack(params[:q])
+      @books = @q.result(distinct: true).includes(:author)
+    end
+
+    def show; end
+
+    def new
+      @book = Book.new
+    end
+
+    def edit; end
+
+    def create
+      @book = Book.new(book_params)
+
+      if @book.save
+        redirect_to admin_book_url(@book), notice: "Book was successfully created."
+      else
+        render :new, status: :unprocessable_entity
+      end
+    end
+
+    def update
+      if @book.update(book_params)
+        @book.assemblies.clear
+
+        assembly_ids = Array(params[:book][:assembly_ids]).select(&:present?)
+        @book.assembly_ids = assembly_ids
+
+        redirect_to admin_book_url(@book), notice: "Book was successfully updated."
+      else
+        render :edit, status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @book.destroy
+
+      redirect_to admin_books_url, notice: "Book was successfully destroyed."
+    end
+
+    def report
+      @book = Book.includes(assemblies: :parts).find(params[:id])
+    end
+
+    private
+
+    def set_book
+      @book = Book.find(params[:id])
+    end
+
+    def book_params
+      params.require(:book).permit(:title, :published_at, :isbn, :author_id, assembly_ids: [])
+    end
+  end
+end

app/views/books/_form.html.erb → app/views/admin/books/_form.html.erb

@@ -1,4 +1,4 @@
-<%= form_with(model: book) do |form| %>
+<%= form_with(model: [:admin, book]) do |form| %>
   <% if book.errors.any? %>
     <div style="color: red">
       <h2><%= pluralize(book.errors.count, "error") %> prohibited this book from being saved:</h2>

app/views/admin/books/edit.html.erb

@@ -0,0 +1,10 @@
+<h1>Editing book</h1>
+
+<%= render "form", book: @book %>
+
+<br>
+
+<div>
+  <%= link_to "Show this book", admin_book_path(@book) %> |
+  <%= link_to "Back to books", admin_books_path %>
+</div>

app/views/books/index.html.erb → app/views/admin/books/index.html.erb

@@ -3,7 +3,7 @@
 <h1>Books</h1>
 
 <div>
-  <%= search_form_for @q do |f| %>
+  <%= search_form_for [:admin, @q] do |f| %>
     <%= f.label :title_or_author_name_cont, "Search by title or Author name" %>
     <%= f.search_field :title_or_author_name_cont %>
     <%= f.submit %>
@@ -17,9 +17,9 @@
     <p>
       <strong>Title:</strong>
       <%= book.title %> |
-      <%= link_to "Show this book", book %>
+      <%= link_to "Show this book", admin_book_path(book) %>
     </p>
   <% end %>
 </div>
 
-<%= link_to "New book", new_book_path %>
+<%= link_to "New book", new_admin_book_path %>

app/views/books/new.html.erb → app/views/admin/books/new.html.erb

@@ -5,5 +5,5 @@
 <br>
 
 <div>
-  <%= link_to "Back to books", books_path %>
+  <%= link_to "Back to books", admin_books_path %>
 </div>

app/views/books/report.html.erb → app/views/admin/books/report.html.erb

@@ -86,5 +86,5 @@
 </section>
 
 <div>
-  <%= link_to "Back to books", books_path %>
+  <%= link_to "Back to books", admin_books_path %>
 </div>

app/views/admin/books/show.html.erb

@@ -0,0 +1,11 @@
+<p style="color: green"><%= notice %></p>
+
+<%= render "admin/books/book", book: @book %>
+
+<div>
+  <%= link_to "Edit this book", edit_admin_book_path(@book) %> |
+  <%= link_to "Back to books", admin_books_path %> |
+  <%= link_to "Show report", report_admin_book_path(@book) %>
+
+  <%= button_to "Destroy this book", admin_book_path(@book), method: :delete %>
+</div>

app/views/layouts/application.html.erb

@@ -18,7 +18,7 @@
       <%= link_to "Accounts", accounts_path %>
       <%= link_to "Assemblies", assemblies_path %>
       <%= link_to "Parts", parts_path %>
-      <%= link_to "Books", books_path %>
+      <%= link_to "Books", admin_books_path %>
       <%= link_to "Suppliers", suppliers_path %>
     </nav>
     <div>

config/routes.rb

@@ -2,10 +2,16 @@
 
 Rails.application.routes.draw do
   resources :accounts, :assemblies, :parts
-  resources :authors, :suppliers, :books do
+  resources :authors, :suppliers do
     get :report, on: :member
   end
 
+  namespace :admin do
+    resources :books do
+      get :report, on: :member
+    end
+  end
+
   namespace :api, defaults: { format: :json } do
     resources :authors, :suppliers, :books, :accounts, :assemblies, :parts, only: %i[index show create update destroy]
   end