{"id":1285,"date":"2020-02-13T13:01:20","date_gmt":"2020-02-13T11:01:20","guid":{"rendered":"http:\/\/www.lafabriquedecode.com\/blog\/?p=1285"},"modified":"2020-02-13T13:04:26","modified_gmt":"2020-02-13T11:04:26","slug":"ruby-design-pattern-builder","status":"publish","type":"post","link":"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/","title":{"rendered":"Ruby: design pattern Builder"},"content":{"rendered":"<h1>Veuillez monter !<\/h1>\n<p>Le design pattern <strong>Builder<\/strong>, appel\u00e9 \u00ab\u00a0Monteur\u00a0\u00bb en fran\u00e7ais est un design pattern de <em>cr\u00e9ation<\/em> dont le but est d&rsquo;aider \u00e0 cr\u00e9er des objets complexes. Pour cela, il int\u00e8gre une classe appel\u00e9e <strong>directeur<\/strong> qui contr\u00f4le l&rsquo;algorithme de construction. <\/p>\n<h1>Composants du design pattern Builder<\/h1>\n<p>Les composants participant \u00e0 ce pattern sont les suivants:<\/p>\n<ul>\n<li>Le directeur, qui prend en composition un monteur<\/li>\n<li>Une abstraction pour les monteurs<\/li>\n<li>Des monteurs concrets<\/li>\n<li>Des parties<\/li>\n<li>Des produits (la cible finale !)<\/li>\n<\/ul>\n<p>Dans l&rsquo;exemple qui suit, nous aurons:<\/p>\n<ul>\n<li>Des monteurs de camions et de voitures<\/li>\n<li>Des produits\u00a0: Camion et Voiture<\/li>\n<li>Des parties\u00a0: porte, moteur, roue<\/li>\n<li>Un directeur qui orchestre la construction de tout \u00e7a<\/li>\n<\/ul>\n<p>Nos abstractions seront des classes abstraites simul\u00e9es (pas d&rsquo;interface en Ruby, ni de classes abstraites <em>stricto sensu<\/em>).<\/p>\n<pre class=\"brush: ruby; title: ; notranslate\" title=\"\">\r\nclass Piece\r\n  def donnerNom\r\n    raise &quot;Impossible d'instancier la classe ProduitEntretien&quot;\r\n  end\r\nend\r\n\r\nclass PorteCamion &lt; Piece\r\n  def donnerNom\r\n    &quot;Porte de camion&quot;\r\n  end\r\nend\r\n\r\nclass PorteVoiture &lt; Piece\r\n  def donnerNom\r\n    &quot;Porte de voiture&quot;\r\n  end\r\nend\r\n\r\nclass RoueCamion &lt; Piece\r\n  def donnerNom\r\n    &quot;Roue de camion&quot;\r\n  end\r\nend\r\n\r\nclass RoueVoiture &lt; Piece\r\n  def donnerNom\r\n    &quot;Roue de voiture&quot;\r\n  end\r\nend\r\n\r\nclass MoteurVoiture &lt; Piece\r\n  def donnerNom\r\n    &quot;Moteur de voiture&quot;\r\n  end\r\nend\r\n\r\nclass MoteurCamion &lt; Piece\r\n  def donnerNom\r\n    &quot;Moteur de camion&quot;\r\n  end\r\nend\r\n\r\nclass Vehicule\r\n\r\n  def initialize\r\n    @configuration = {}\r\n  end\r\n\r\n  def ajouter_piece(nom, piece)\r\n    @configuration[nom] = piece\r\n  end\r\n\r\n  protected\r\n\r\n  attr_reader :configuration\r\nend\r\n\r\nclass Camion &lt; Vehicule\r\nend\r\n\r\nclass Voiture &lt; Vehicule\r\nend\r\n\r\nclass Directeur\r\n\r\n  def initialize (monteur)\r\n    @monteur = monteur\r\n  end\r\n\r\n  def monter\r\n    @monteur.creer_vehicule\r\n    @monteur.poser_portes\r\n    @monteur.poser_moteur\r\n    @monteur.poser_roues\r\n    @monteur.peindre\r\n  end\r\n\r\n  private\r\n\r\n  attr_reader :monteur\r\nend\r\n\r\nclass Monteur\r\n\r\n  def initialize\r\n    raise &quot;Impossible d'instancier la classe abstraite Monteur&quot;\r\n  end\r\n\r\n  def creer_vehicule\r\n    raise NotImplementedError\r\n  end\r\n\r\n  def poser_portes\r\n    raise NotImplementedError\r\n  end\r\n\r\n  def poser_moteur\r\n    raise NotImplementedError\r\n  end\r\n\r\n  def poser_roues\r\n    raise NotImplementedError\r\n  end\r\n\r\n  def peindre\r\n    raise NotImplementedError\r\n  end\r\n\r\n  def donner_vehicule\r\n    raise NotImplementedError\r\n  end\r\nend\r\n\r\nclass MonteurVoitures &lt; Monteur\r\n\r\n  def initialize(options)\r\n    @options = options\r\n  end\r\n\r\n  def creer_vehicule\r\n    @voiture = Voiture.new\r\n  end\r\n\r\n  def poser_portes\r\n    @voiture.ajouter_piece('porte AVG', PorteVoiture.new)\r\n    @voiture.ajouter_piece('porte AVD', PorteVoiture.new)\r\n    @voiture.ajouter_piece('porte arri\u00e8re', PorteVoiture.new)\r\n\r\n    if 3 &lt; @options['nb_portes']\r\n      @voiture.ajouter_piece('porte ARG', PorteVoiture.new)\r\n      @voiture.ajouter_piece('porte ARD', PorteVoiture.new)\r\n    end\r\n  end\r\n\r\n  def poser_moteur\r\n    @voiture.ajouter_piece('moteur', MoteurVoiture.new)\r\n  end\r\n\r\n  def poser_roues\r\n    @voiture.ajouter_piece('roue AVG', RoueVoiture.new)\r\n    @voiture.ajouter_piece('roue AVD', RoueVoiture.new)\r\n    @voiture.ajouter_piece('roue ARG', RoueVoiture.new)\r\n    @voiture.ajouter_piece('roue ARD', RoueVoiture.new)\r\n  end\r\n\r\n  def peindre\r\n    puts &quot;Je peins la voiture en &quot; + @options['couleur_peinture']\r\n  end\r\n\r\n  def donner_vehicule\r\n    @voiture\r\n  end\r\n\r\n  private\r\n\r\n  attr_reader :voiture, :options\r\nend\r\n\r\n\r\nclass MonteurCamions &lt; Monteur\r\n\r\n  def initialize(options)\r\n    @options = options\r\n  end\r\n\r\n  def creer_vehicule\r\n    @camion = Camion.new\r\n  end\r\n\r\n  def poser_portes\r\n    @camion.ajouter_piece('porte AVG', PorteCamion.new)\r\n    @camion.ajouter_piece('porte AVD', PorteCamion.new)\r\n  end\r\n\r\n  def poser_moteur\r\n    @camion.ajouter_piece('moteur', MoteurCamion.new)\r\n  end\r\n\r\n  def poser_roues\r\n    @camion.ajouter_piece('roue AVG', RoueCamion.new)\r\n    @camion.ajouter_piece('roue AVD', RoueCamion.new)\r\n    @camion.ajouter_piece('roue ARG', RoueCamion.new)\r\n    @camion.ajouter_piece('roue ARD', RoueCamion.new)\r\n  end\r\n\r\n  def peindre\r\n    puts &quot;Je peins le camion en &quot; + @options['couleur_peinture']\r\n  end\r\n\r\n  def donner_vehicule\r\n    @camion\r\n  end\r\n\r\n  private\r\n\r\n  attr_reader :camion, :options\r\nend\r\n\r\n\r\nmonteur_voitures = MonteurVoitures.new({'nb_portes' =&gt; 5, 'couleur_peinture' =&gt; 'rouge'})\r\nmonteur_camions = MonteurCamions.new({'couleur_peinture' =&gt; 'bleu'})\r\n\r\n[monteur_voitures, monteur_camions].each do |monteur|\r\n  directeur = Directeur.new(monteur)\r\n  directeur.monter\r\n  vehicule = monteur.donner_vehicule\r\nend\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Veuillez monter ! Le design pattern Builder, appel\u00e9 \u00ab\u00a0Monteur\u00a0\u00bb en fran\u00e7ais est un design pattern de cr\u00e9ation dont le but est d&rsquo;aider \u00e0 cr\u00e9er des objets complexes. Pour cela, il int\u00e8gre une classe appel\u00e9e directeur qui contr\u00f4le l&rsquo;algorithme de construction. Composants du design pattern Builder Les composants participant \u00e0 ce pattern sont les suivants: Le [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[24,14,96,29],"tags":[110,108,106],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ruby: design pattern Builder - La Fabrique de code - Tech blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ruby: design pattern Builder - La Fabrique de code - Tech blog\" \/>\n<meta property=\"og:description\" content=\"Veuillez monter ! Le design pattern Builder, appel\u00e9 \u00ab\u00a0Monteur\u00a0\u00bb en fran\u00e7ais est un design pattern de cr\u00e9ation dont le but est d&rsquo;aider \u00e0 cr\u00e9er des objets complexes. Pour cela, il int\u00e8gre une classe appel\u00e9e directeur qui contr\u00f4le l&rsquo;algorithme de construction. Composants du design pattern Builder Les composants participant \u00e0 ce pattern sont les suivants: Le [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/\" \/>\n<meta property=\"og:site_name\" content=\"La Fabrique de code - Tech blog\" \/>\n<meta property=\"article:published_time\" content=\"2020-02-13T11:01:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-02-13T11:04:26+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:creator\" content=\"@LaFabrique2Code\" \/>\n<meta name=\"twitter:site\" content=\"@LaFabrique2Code\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/\",\"url\":\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/\",\"name\":\"Ruby: design pattern Builder - La Fabrique de code - Tech blog\",\"isPartOf\":{\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#website\"},\"datePublished\":\"2020-02-13T11:01:20+00:00\",\"dateModified\":\"2020-02-13T11:04:26+00:00\",\"author\":{\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#\/schema\/person\/83863c048b82fd9ccf6407bddd241162\"},\"breadcrumb\":{\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"http:\/\/www.lafabriquedecode.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ruby: design pattern Builder\"}]},{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#website\",\"url\":\"http:\/\/www.lafabriquedecode.com\/blog\/\",\"name\":\"La Fabrique de code - Tech blog\",\"description\":\"PHP objet, MySQL, Design Patterns, OOP...et plus !\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/www.lafabriquedecode.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#\/schema\/person\/83863c048b82fd9ccf6407bddd241162\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/0.gravatar.com\/avatar\/fc2e1de7c8a1871b50ff9c6a6f8682a2?s=96&d=retro&r=g\",\"contentUrl\":\"http:\/\/0.gravatar.com\/avatar\/fc2e1de7c8a1871b50ff9c6a6f8682a2?s=96&d=retro&r=g\",\"caption\":\"admin\"},\"url\":\"http:\/\/www.lafabriquedecode.com\/blog\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ruby: design pattern Builder - La Fabrique de code - Tech blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/www.lafabriquedecode.com\/blog\/2020\/02\/ruby-design-pattern-builder\/","og_locale":"fr_FR","og_type":"article","og_title":"Ruby: design pattern Builder - La Fabrique de code - Tech blog","og_description":"Veuillez monter ! Le design pattern Builder, appel\u00e9 \u00ab\u00a0Monteur\u00a0\u00bb en fran\u00e7ais est un design pattern de cr\u00e9ation dont le but est d&rsquo;aider \u00e0 cr\u00e9er des objets complexes. Pour cela, il int\u00e8gre une classe appel\u00e9e directeur qui contr\u00f4le l&rsquo;algorithme de construction. 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