create book

app/controllers/books_controller.rb

@@ -0,0 +1,23 @@
+class BooksController < ApplicationController
+  def new
+    @books = Book.new
+  end
+
+  def create
+    @books = Book.new(book_params)
+    if @books.save
+      flash[:info] = I18n.t('es.flash.book.created')
+      redirect_to @books
+    else
+      render 'new'
+    end
+  end
+
+  def show
+    @books = Book.find(params[:id])
+  end
+
+  def book_params
+    params.require(:book).permit(:title)
+  end
+end

app/helpers/book_helper.rb

@@ -0,0 +1,2 @@
+module BookHelper
+end

app/views/books/new.html.erb

@@ -0,0 +1,9 @@
+<div>
+  <%= form_for(@books) do |f| %>
+    <%= render 'shared/error_messages', object: f.object %>
+    <%= f.label :title %>
+    <%= f.text_field :title, placeholder: true %>
+
+    <%= f.submit %>
+  <% end %>
+</div>

app/views/books/show.html.erb

@@ -0,0 +1,4 @@
+<% flash.each do |message_type, message| %>
+  <%= content_tag(:div, message, class: "alert alert-#{message_type}") %>
+<% end %>
+<h1><%= @books.title %></h1>

app/views/static_pages/home.html.erb

@@ -1,5 +1,6 @@
 <h1>Recetame App</h1>
 <%= link_to t('button.recipe.create'), new_recipe_path %></a>
+<%= link_to t('button.book.create'), new_book_path %></a>
 <h2>Aquí están las últimas 10 recetas</h2>
 
 <ul id="recipes" style= 'list-style: none'>

config/locales/es.yml

@@ -21,14 +21,24 @@
 
 es:
   flash:
+    book:
+      created: "Su libro se ha creado"
     recipe:
       created: "Su receta se ha creado"
   button:
+    book:
+      create: "Crear libro"
     recipe:
       create: "Crear receta"
   activerecord:
     errors:
       models:
+        book:
+          attributes:
+            title:
+              too_short: "Titulo demasiado corto"
+              too_long: "Titulo demasiado largo"
+              blank: "Titulo en blanco, inserta un titulo"
         recipe:
           attributes:
             title:
@@ -40,14 +50,21 @@ es:
         too_long: "Demasiado largo"
         blank: "Escribe algo"
     models:
+      book:
+        one: "Libro"
+        other: "Libros"
       recipe:
         one: "Receta"
         other: "Recetas"
     attributes:
+      book:
+        title: "Nombre del Libro"
       recipe:
-        title: "Nombre Receta"
+        title: "Nombre de la Receta"
   helpers:
     placeholder:
+      book:
+        title: "Escribe un título"
       recipe:
         title: "Escribe un título"
     submit:

config/routes.rb

@@ -1,7 +1,7 @@
 Rails.application.routes.draw do
   root 'static_pages#home'
   #get 'recipes/new' => 'recipes#new'
-  resources :recipes
+  resources :recipes, :books
 
   # The priority is based upon order of creation: first created -> highest priority.
   # See how all your routes lay out with "rake routes".

test/integration/books_test.rb

@@ -0,0 +1,23 @@
+require 'test_helper'
+
+class BooksTest < ActionDispatch::IntegrationTest
+  test "invalid new book information" do
+    get new_book_path
+    assert_no_difference 'Book.count' do
+      post books_path, book: { title:  "" }
+    end
+    assert_select 'div.alert-danger'
+    assert_template 'books/new'
+  end
+
+  test "valid new book information" do
+    get new_book_path
+    assert_difference 'Book.count', 1 do
+      post books_path, book: { title:  "Arroces del mundo" }
+    end
+    follow_redirect!
+    assert_not flash.empty?
+    assert_select 'div.alert-info'
+    assert_template 'books/show'
+  end
+end

test/models/book_test.rb

@@ -2,6 +2,28 @@
 
 class BookTest < ActiveSupport::TestCase
 
+  def setup
+    @books = Book.new(title: "Curry con todo")
+  end
+
+  test "title should be present" do
+    @books.title = "    "
+
+    assert_not @books.valid?
+  end
+
+  test "title should not be too short" do
+    @books.title = "a"*4
+
+    assert_not @books.valid?
+  end
+
+  test "title should not be too long" do
+    @books.title = "a"*101
+
+    assert_not @books.valid?
+  end
+
   test "last_five should have 5 items" do
     if Book.all.size >= 5
       assert_equal Book.last_five.size, 5