{"id":5017,"date":"2011-03-21T21:04:40","date_gmt":"2011-03-21T20:04:40","guid":{"rendered":"http:\/\/www.ziserman.com\/blog\/?p=5017"},"modified":"2011-03-21T21:05:56","modified_gmt":"2011-03-21T20:05:56","slug":"conception-modele-vue-controleur","status":"publish","type":"post","link":"https:\/\/www.ziserman.com\/blog\/2011\/03\/21\/conception-modele-vue-controleur\/","title":{"rendered":"Conception Mod\u00e8le – Vue – Contr\u00f4leur"},"content":{"rendered":"

Je vous propose plusieurs billets, sur la conception logicielle de qualit\u00e9.<\/p>\n

Une bonne pratique, quand on veut faire du logiciel de qualit\u00e9, c’est de s\u00e9parer les fonctions en \u00ab\u00a0couches\u00a0\u00bb.<\/p>\n

Ainsi, on a l’habitude, pour un syst\u00e8me de publication web (e-commerce ou autre CMS) de s\u00e9parer les choses en trois couches :<\/p>\n

    \n
  1. Couche Pr\u00e9sentation<\/li>\n
  2. Couche \u00ab\u00a0applicative\u00a0\u00bb<\/li>\n
  3. Couche d’acc\u00e8s aux donn\u00e9es<\/li>\n<\/ol>\n

    C’est ce qu’on appelle le mod\u00e8le MVC : Mod\u00e8le Vue Contr\u00f4leur.<\/p>\n

    La premi\u00e8re couche est simple \u00e0 d\u00e9finir : c’est tout ce qui touche \u00e0 la g\u00e9n\u00e9ration de la page HTML. Normalement, le code HTML doit \u00eatre exclusivement regroup\u00e9 dans cette couche.<\/p>\n

    Le derni\u00e8re couche est \u00e9galement simple \u00e0 comprendre : elle doit couvrir l’ensemble des acc\u00e8s au syst\u00e8me de stockage des donn\u00e9es : la base de donn\u00e9es quoi. Elle regroupe donc, si le syst\u00e8me est bas\u00e9 sur une base de donn\u00e9es relationnelles, l’ensemble des acc\u00e8s SQL (il ne doit donc pas y en avoir sur les autres couches).<\/p>\n

    A partir de ces deux d\u00e9finitions, on peut d\u00e9duire que la couche du milieux contient… le reste.<\/p>\n

    L’avantage de cette approche :<\/p>\n

    On ne m\u00e9lange pas tout. <\/strong><\/strong>Programmer l’acc\u00e8s \u00e0 une base de donn\u00e9es, ou programmer une interface HTML, ce n’est pas du tout la m\u00eame chose.<\/p>\n

    <\/strong><\/strong>Normalement, cela doit permettre de faire \u00e9voluer le site plus vite, d’am\u00e9liorer sa qualit\u00e9 (moins de bugs).<\/p>\n

    Je dis normalement, parce qu’il faut bien savoir que… un mauvais programmeur fera du mauvais travail, quelque soit les r\u00e8gles qu’on peut mettre en place<\/strong>.<\/p>\n

    Autre paradoxe : programmer comme cela, en couche, cela augmente m\u00e9caniquement la taille du code<\/strong>.<\/p>\n

    Le programme le plus court sera celui ou vous m\u00e9langez tout…<\/p>\n

    Et pourtant, l\u00e0 aussi m\u00e9caniquement, moins il y a de code, et moins il y a risque de bug<\/strong>.<\/p>\n

    On est donc \u00e0 la recherche d’un juste milieu<\/strong>.<\/p>\n

    Bon, ceci dit, personne de vraiment s\u00e9rieux ne remet en cause le mod\u00e8le de ces trois couches.<\/p>\n

    D’ailleurs, la plupart des plate formes e-commerce respectent cette structure : Magento, Prestashop, …<\/p>\n","protected":false},"excerpt":{"rendered":"

    Je vous propose plusieurs billets, sur la conception logicielle de qualit\u00e9. Une bonne pratique, quand on veut faire du logiciel de qualit\u00e9, c’est de s\u00e9parer les fonctions en \u00ab\u00a0couches\u00a0\u00bb. Ainsi, on a l’habitude, pour un syst\u00e8me de publication web (e-commerce ou autre CMS) de s\u00e9parer les choses en trois couches : Couche Pr\u00e9sentation Couche \u00ab\u00a0applicative\u00a0\u00bb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[2],"tags":[371,52,189],"class_list":["post-5017","post","type-post","status-publish","format-standard","hentry","category-e-commerce","tag-e-commerce","tag-programmation","tag-systeme-dinformation-e-commerce"],"yoast_head":"\nConception Mod\u00e8le - Vue - Contr\u00f4leur - Ziserman.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ziserman.com\/blog\/2011\/03\/21\/conception-modele-vue-controleur\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Conception Mod\u00e8le - Vue - Contr\u00f4leur - Ziserman.com\" \/>\n<meta property=\"og:description\" content=\"Je vous propose plusieurs billets, sur la conception logicielle de qualit\u00e9. Une bonne pratique, quand on veut faire du logiciel de qualit\u00e9, c’est de s\u00e9parer les fonctions en \u00ab\u00a0couches\u00a0\u00bb. Ainsi, on a l’habitude, pour un syst\u00e8me de publication web (e-commerce ou autre CMS) de s\u00e9parer les choses en trois couches : Couche Pr\u00e9sentation Couche \u00ab\u00a0applicative\u00a0\u00bb […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ziserman.com\/blog\/2011\/03\/21\/conception-modele-vue-controleur\/\" \/>\n<meta property=\"og:site_name\" content=\"Ziserman.com\" \/>\n<meta property=\"article:published_time\" content=\"2011-03-21T20:04:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2011-03-21T20:05:56+00:00\" \/>\n<meta name=\"author\" content=\"Fran\u00e7ois\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ziserman\" \/>\n<meta name=\"twitter:site\" content=\"@ziserman\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fran\u00e7ois\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/2011\\\/03\\\/21\\\/conception-modele-vue-controleur\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/2011\\\/03\\\/21\\\/conception-modele-vue-controleur\\\/\"},\"author\":{\"name\":\"Fran\u00e7ois\",\"@id\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/#\\\/schema\\\/person\\\/f9bae013e59005579f4b86f162f89c72\"},\"headline\":\"Conception Mod\u00e8le – Vue – Contr\u00f4leur\",\"datePublished\":\"2011-03-21T20:04:40+00:00\",\"dateModified\":\"2011-03-21T20:05:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/2011\\\/03\\\/21\\\/conception-modele-vue-controleur\\\/\"},\"wordCount\":376,\"commentCount\":8,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/#\\\/schema\\\/person\\\/f9bae013e59005579f4b86f162f89c72\"},\"keywords\":[\"e-commerce\",\"programmation\",\"Syst\u00e8me d'information e-commerce\"],\"articleSection\":[\"e-commerce\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/2011\\\/03\\\/21\\\/conception-modele-vue-controleur\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/2011\\\/03\\\/21\\\/conception-modele-vue-controleur\\\/\",\"url\":\"https:\\\/\\\/www.ziserman.com\\\/blog\\\/2011\\\/03\\\/21\\\/conception-modele-vue-controleur\\\/\",\"name\":\"Conception Mod\u00e8le - 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