{"id":7419,"date":"2015-12-21T11:16:30","date_gmt":"2015-12-21T11:16:30","guid":{"rendered":"https:\/\/dev.railscarma.com\/unlocking-the-devise-gem\/"},"modified":"2026-01-01T06:58:34","modified_gmt":"2026-01-01T06:58:34","slug":"debloquer-la-gemme-du-dispositif","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/fr\/blog\/articles-techniques\/debloquer-la-gemme-du-dispositif\/","title":{"rendered":"Unlocking the \u2018Devise\u2019 Gem in Rails 8"},"content":{"rendered":"
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If we have to don our wizarding hat and take out our crystal balls, we would still be harping that Ruby on Rails is going to be hot in 2026 too! 2026 is also going to bring in only 24 hours a day (how we wish, we could stretch the time) and time would still spell money for businesspeople. When time is money, anything which can save time is gold! And that\u2019s where Ruby on Rails come in picture. What could take other programming languages months to complete, takes only weeks, sometimes just days for Ruby on Rails. Shaping ideas into applications was never so easy. With Ruby on Rails, agility is the norm and convention over configuration the benchmark. And what make Ruby on Rails more powerful are the bunch of pre-packaged, categorized, reusable codes, named as gems. With gems, Rails is a super power to behold. One of the most popular gems is called as Devise Gems, which is a complete authentication package. Read on to know more about Devise gem.<\/p>\n

Introducing Devise for Ruby on Rails 8<\/b><\/h2>\n

Devise is a widely used authentication library for Ruby on Rails 8 applications, built on top of Warden<\/strong>, a Rack-based authentication framework.<\/p>\n

Warden manages user sessions by securely validating the identity of authenticated users. It also ensures that unauthenticated users are restricted from accessing protected routes and resources within a Rails application.<\/p>\n

Since Warden operates strictly at the Rack level, it does not provide Rails-specific features such as controllers, views, helpers, or configuration generators required for a complete authentication system. Devise bridges this gap by adding these Rails integrations, making it easier to implement a robust and production-ready authentication solution in Rails 8.<\/p>\n

A major advantage of Devise is its modular architecture. It includes around ten authentication modules that allow you to customize how authentication behaves in your application. You can enable only the modules you need\u2014such as Registerable, Omniauthable, Trackable, and others\u2014keeping your authentication setup clean and flexible.<\/p>\n

\u00a0<\/p>\n

With this understanding, we can now begin building our Tasks application and set up Devise in a Rails 8 environment.<\/p>\n

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Qu'est-ce que la gemme \u00ab\u00a0Concevoir\u00a0\u00bb\u00a0?<\/strong><\/h2>\n

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    \n
  1. Devise est une solution d'authentification puissante et flexible pour Rails.<\/li>\n
  2. Il est enti\u00e8rement bas\u00e9 sur la structure MVC.<\/li>\n
  3. Il permet d'avoir plusieurs mod\u00e8les connect\u00e9s en m\u00eame temps.<\/li>\n<\/ol>\n

    <\/p>\n

    <\/p>\n

    Diff\u00e9rents modules de dispositif<\/strong><\/h2>\n

    <\/p>\n

    <\/p>\n

    Devise est compos\u00e9 de 10 modules importants.<\/p>\n

    <\/p>\n

    <\/p>\n

      \n
    1. Base de donn\u00e9es authentifiable\u00a0: il crypte et stocke les mots de passe dans la base de donn\u00e9es afin que la validation de l'authenticit\u00e9 d'un utilisateur puisse \u00eatre effectu\u00e9e au moment de la connexion. L'authentification peut \u00eatre effectu\u00e9e \u00e0 la fois via des requ\u00eates POST ou par l'authentification de base HTTP.<\/li>\n
    2. Omniauthable\u00a0: ajouter\u00a0OmniAuth<\/a>\u00a0support, c'est-\u00e0-dire possible de configurer une connexion avec OmniAuth.<\/li>\n
    3. Confirmable\u00a0: envoie des e-mails avec des instructions de confirmation et v\u00e9rifie si un compte est d\u00e9j\u00e0 confirm\u00e9 lors de la connexion.<\/li>\n
    4. R\u00e9cup\u00e9rable\u00a0: r\u00e9initialise le mot de passe de l'utilisateur et envoie des instructions de r\u00e9initialisation.<\/li>\n
    5. Enregistrable\u00a0: g\u00e8re le processus d'inscription en inscrivant les utilisateurs, leur permettant \u00e9galement de modifier et de d\u00e9truire leur compte.<\/li>\n
    6. M\u00e9morisable\u00a0: comme son nom l'indique, il aide \u00e0 g\u00e9rer, g\u00e9n\u00e9rer et effacer un jeton permettant de m\u00e9moriser l'utilisateur via les cookies enregistr\u00e9s.<\/li>\n
    7. Tra\u00e7able\u00a0: suit le nombre de connexions, les horodatages et l'adresse IP.<\/li>\n
    8. Expirable<\/a>\u00a0:\u00a0Expire les sessions qui n'ont pas \u00e9t\u00e9 actives pendant une p\u00e9riode de temps sp\u00e9cifi\u00e9e.<\/li>\n
    9. Validable\u00a0: fournit des validations de l'e-mail et du mot de passe. C'est facultatif et peut \u00eatre personnalis\u00e9, vous pouvez donc d\u00e9finir vos propres validations.<\/li>\n
    10. Verrouillable\u00a0: il permet de verrouiller un compte apr\u00e8s un nombre sp\u00e9cifique de tentatives de connexion infructueuses. Le compte peut \u00eatre d\u00e9verrouill\u00e9 par e-mail ou apr\u00e8s une p\u00e9riode de temps sp\u00e9cifique.<\/li>\n<\/ol>\n

      <\/p>\n

      <\/p>\n

      Installer le dispositif, cr\u00e9er un mod\u00e8le, afficher et configurer<\/strong><\/h2>\n

      <\/p>\n

      <\/p>\n

        \n
      1. Cr\u00e9ez votre application Rails<\/li>\n
      2. Ajoutez la gemme 'devise' \u00e0 votre Gemfile.<\/li>\n
      3. Ex\u00e9cutez l'installation du bundle dans votre ligne de commande.<\/li>\n
      4. Ex\u00e9cutez rails generate devise:install dans votre ligne de commande.<\/li>\n
      5. Execute rails generate devise <Model Name> in your command line to create model<\/li>\n<\/ol>\n
        \n
        Run the following command:<\/b><\/div>\n
        \u00a0<\/div>\n
        rails generate devise User<\/pre>\n
        After running this command, a user.rb model will be generated in the app\/models directory.<\/div>\n
        \u00a0<\/div>\n
        class User < ApplicationRecord\n  # Include default Devise modules.\n  # Other available modules are:\n  # :confirmable, :lockable, :timeoutable, and :omniauthable
        \u00a0 devise :database_authenticatable,
        \u00a0 \u00a0 \u00a0 \u00a0 \u00a0:registerable,
        \u00a0 \u00a0 \u00a0 \u00a0 \u00a0:recoverable,
        \u00a0 \u00a0 \u00a0 \u00a0 \u00a0:rememberable,
        \u00a0 \u00a0 \u00a0 \u00a0 \u00a0:trackable,
        \u00a0 \u00a0 \u00a0 \u00a0 \u00a0:validatable
        fin<\/pre>\n<\/div>\n
          \n
        1. Si vous le souhaitez, vous pouvez modifier votre fichier de migration pour l'utilisateur. Ensuite, lancez rake db:migrate<\/li>\n
        2. Ex\u00e9cutez les rails g\u00e9n\u00e8rent devise:views dans votre ligne de commande pour cr\u00e9er des vues<\/li>\n
        3. vous devez configurer les options d'URL par d\u00e9faut pour le logiciel de messagerie Devise dans chaque environnement. Ex-configuration pour config\/environments\/development.rb\u00a0: config.action_mailer.default_url_options = { h\u00f4te\u00a0: 'localhost', port\u00a0: 3000 }<\/li>\n<\/ol>\n
          <\/p>\n
          <\/p>\n
          Vous pouvez personnaliser les mod\u00e8les, les contr\u00f4leurs et les vues selon les besoins. Veuillez suivre les documents github pour plus de d\u00e9tails.<\/p>\n
          <\/p>\n
          <\/p>\n
          Certains filtres et assistants de contr\u00f4leur<\/strong><\/h2>\n
          <\/p>\n
          <\/p>\n