Depot Sample in Rails 2.0, Step 4

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Rails UP Ruby SVN subversion

Objective: To decorate HTML page

1. add some test data
ruby script/generate migration add_test_data

2. edit db/migrate/*****_add_test_data.rb

class AddTestData < ActiveRecord::Migration
	  def self.up
	    Product.delete_all

	    Product.create(:title => 'Pragmatic Project Automation',
	    :description => 
	    %{<p>
	       <em>Pragmatic Project Automation</em> shows you how to improve the 
	       consistency and repeatability of your project's procedures using 
	       automation to reduce risk and errors.
	      </p>
	      <p>
	        Simply put, we're going to put this thing called a computer to work 
	        for you doing the mundane (but important) project stuff. That means 
	        you'll have more time and energy to do the really 
	        exciting---and difficult---stuff, like writing quality code.
	      </p>},
	    :image_url =>   '/images/auto.jpg',    
	    :price => 29.95)


	    Product.create(:title => 'Pragmatic Version Control',
	      :description =>
	      %{<p>
	         This book is a recipe-based approach to using Subversion that will 
	         get you up and running quickly---and correctly. All projects need
	         version control: it's a foundational piece of any project's 
	         infrastructure. Yet half of all project teams in the U.S. don't use
	         any version control at all. Many others don't use it well, and end 
	         up experiencing time-consuming problems.
	      </p>},
	    :image_url => '/images/svn.jpg',
	    :price => 28.50)


	    Product.create(:title => 'Pragmatic Unit Testing (C#)',
	    :description => 
	    %{<p>
	        Pragmatic programmers use feedback to drive their development and 
	        personal processes. The most valuable feedback you can get while 
	        coding comes from unit testing.
	      </p>
	      <p>
	        Without good tests in place, coding can become a frustrating game of 
	        "whack-a-mole." That's the carnival game where the player strikes at a 
	        mechanical mole; it retreats and another mole pops up on the opposite side 
	        of the field. The moles pop up and down so fast that you end up flailing 
	        your mallet helplessly as the moles continue to pop up where you least 
	        expect them.
	      </p>},
	    :image_url => '/images/utc.jpg',
	    :price => 27.75)
	  end

	  def self.down
	    Product.delete_all
	  end
	end

#%{...} is same as "", but used for long string(text)

3. insert test data into database
Please delete the db/migrate/*****_add_price.rb first, Or it will be executed and a MySQL exception will be thrown.
rake db:migrate
#Please check coressponding table in database for confirm

4. pick "files.rar" from attachment
copy depot.css into public/stylesheets
copy images into public/images
copy index.html.erb into app/views/products

5. edit stylesheet_link_tag of app/views/layouts/products.html.erb

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
	<head>
	  <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
	  <title>Products: <%= controller.action_name %></title>
	  <%= stylesheet_link_tag 'scaffold', 'depot' %>
	</head>
	<body>

	<p style="color: green"><%= flash[:notice] %></p>

	<%= yield  %>

	</body>
	</html>

6. try it.

files.rar (22.8 KB)
下载次数: 34

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2008-06-24 15:45
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