Framework "Ruby on Rails" a web 2.0 (Prílohy)

Obsah práce

1.	Fenomén Web 2.0
2.	Ruby on Rails – vývoj dynamických web 2.0 aplikácií
3.	Framework "Ruby on Rails" a web 2.0 (Prílohy)

Prílohy

Príloha A

controllers/books_controller.rb

class BooksController < ApplicationController
  # GET /books
  # GET /books.xml
  def index
    @books = Book.all

    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @books }
    end
  end

  # GET /books/1
  # GET /books/1.xml
  def show
    @book = Book.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @book }
    end
  end

  # GET /books/new
  # GET /books/new.xml
  def new
    @book = Book.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @book }
    end
  end

  # GET /books/1/edit
  def edit
    @book = Book.find(params[:id])
  end

  # POST /books
  # POST /books.xml
  def create
    @book = Book.new(params[:book])

    respond_to do |format|
      if @book.save
        flash[:notice] = 'Book was successfully created.'
        format.html { redirect_to(@book) }
        format.xml  { render :xml => @book, :status => :created, :location => @book }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @book.errors, :status => :unprocessable_entity }
      end
    end
  end

  # PUT /books/1
  # PUT /books/1.xml
  def update
    @book = Book.find(params[:id])

    respond_to do |format|
      if @book.update_attributes(params[:book])
        flash[:notice] = 'Book was successfully updated.'
        format.html { redirect_to(@book) }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @book.errors, :status => :unprocessable_entity }
      end
    end
  end

  # DELETE /books/1
  # DELETE /books/1.xml
  def destroy
    @book = Book.find(params[:id])
    @book.destroy

    respond_to do |format|
      format.html { redirect_to(books_url) }
      format.xml  { head :ok }
    end
  end
end

models/book.rb

class Book < ActiveRecord::Base
end

views/books/edit.html.erb

<h1>Editing book</h1>

<% form_for(@book) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.submit 'Update' %>
  </p>
<% end %>

<%= link_to 'Show', @book %> |
<%= link_to 'Back', books_path %>

views/books/index.html.erb

<h1>Listing books</h1>

<table>
  <tr>
  </tr>

<% @books.each do |book| %>
  <tr>
    <td><%= link_to 'Show', book %></td>
    <td><%= link_to 'Edit', edit_book_path(book) %></td>
    <td><%= link_to 'Destroy', book, :confirm => 'Are you sure?', :method => :delete %></td>
  </tr>
<% end %>
</table>

<br />

<%= link_to 'New book', new_book_path %>

views/books/new.html.erb

<h1>New book</h1>

<% form_for(@book) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.submit 'Create' %>
  </p>
<% end %>

<%= link_to 'Back', books_path %>

views/books/edist.html.erb

<%= link_to 'Edit', edit_book_path(@book) %> |
<%= link_to 'Back', books_path %