{"id":30802,"date":"2024-08-10T08:09:43","date_gmt":"2024-08-10T16:09:43","guid":{"rendered":"https:\/\/alexrusin.com\/?p=30802"},"modified":"2024-08-11T07:49:49","modified_gmt":"2024-08-11T15:49:49","slug":"how-to-integrate-sequelize-with-typescript-in-node-js-project","status":"publish","type":"post","link":"https:\/\/blog.alexrusin.com\/how-to-integrate-sequelize-with-typescript-in-node-js-project\/","title":{"rendered":"How to Integrate Sequelize with Typescript in Node.js Project"},"content":{"rendered":"\n<p>In my experience, many Node.js projects require access to a database. My go-to ORM (Object-Relational Mapper) for these tasks is Sequelize. In this blog post, I&#8217;ll guide you through the process of adding a MySQL database using Sequelize with Typescript in your Node.js project.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1: Setting Up MySQL with Docker<\/h2>\n\n\n\n<p>To start, you&#8217;ll need to set up a MySQL instance using Docker. Here&#8217;s how you can do it:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open your browser and search for &#8220;Docker MySQL.&#8221; The first result should be the MySQL official Docker image.<\/li>\n\n\n\n<li>Copy the Docker command to start the MySQL container.<\/li>\n\n\n\n<li>Open your VS Code and paste the command into your terminal. Make sure to modify the container name and port settings: <\/li>\n<\/ol>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: bash; title: ; notranslate\" title=\"\">\ndocker run --name mysql-db -e MYSQL_ROOT_PASSWORD=secret -p 3306:3306 -d mysql:latest\n<\/pre><\/div>\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li>Run the command. If you don&#8217;t have the MySQL image, Docker will automatically download it and start the container.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2: Connecting to MySQL Using TablePlus<\/h2>\n\n\n\n<p>Next, you&#8217;ll want to connect to your MySQL instance using TablePlus or a similar database management tool:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open TablePlus and configure a new connection:\n<ul class=\"wp-block-list\">\n<li>Host: <code>localhost<\/code><\/li>\n\n\n\n<li>Port: <code>3306<\/code><\/li>\n\n\n\n<li>Username: <code>root<\/code><\/li>\n\n\n\n<li>Password: <code>secret<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Test the connection, and if successful, connect to the database.<\/li>\n\n\n\n<li>Create a new database named <code>my_blog<\/code> using the UI.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Step 3: Configure Your Node.js Project<\/h2>\n\n\n\n<p>In your Node.js TypeScript project, you&#8217;ll need to configure the database connection settings:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open the <code>.env<\/code> file and add the following configuration below.<\/li>\n\n\n\n<li>Ensure that your project has a configuration module to load these environment variables.<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">DB_NAME=my_blog\nDB_USER=root\nDB_PASSWORD=secret\nDB_HOST=localhost\nDB_PORT=3306<\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>? <strong>Unlock Your Backend Development Skills!<\/strong> ? Ready to master Node.js and Express for backend development? Check out this comprehensive course on Coursera: <a href=\"https:\/\/imp.i384100.net\/DKPn6y\" target=\"_blank\" rel=\"noreferrer noopener\">Developing Backend Apps with Node.js and Express<\/a><\/p>\n\n\n\n<p>Whether you&#8217;re a beginner or looking to refine your skills, this course covers everything you need to know to build powerful backend applications. Enroll now and take your coding journey to the next level! ??<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Step 4: Install Sequelize and MySQL Driver<\/h2>\n\n\n\n<p>Now, it&#8217;s time to install Sequelize and the necessary packages:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Install Sequelize with TypeScript support:bashCopy code: <\/li>\n<\/ol>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: bash; title: ; notranslate\" title=\"\">\nnpm install sequelize sequelize-typescript mysql2 reflect-metadata\n<\/pre><\/div>\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>Also, install the required TypeScript types:bashCopy code:<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: bash; title: ; notranslate\" title=\"\">\nnpm install --save-dev @types\/node @types\/validator\n<\/pre><\/div>\n\n\n<h2 class=\"wp-block-heading\">Step 5: Configure TypeScript<\/h2>\n\n\n\n<p>Update your <code>tsconfig.json<\/code> to enable decorators:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Set <code>target<\/code> to <code>ES6<\/code> or higher.<\/li>\n\n\n\n<li>Add the following compiler options:<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"json\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\"experimentalDecorators\": true,\n\"emitDecoratorMetadata\": true<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Step 6: Create the Database Connection File<\/h2>\n\n\n\n<p>Create a new file named <code>dbConnection.ts<\/code> in the <code>src<\/code> folder:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"typescript\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import { Sequelize } from 'sequelize-typescript';\nimport config from '.\/config';\n\nconst sequelize = new Sequelize({\n  database: config.DB_NAME,\n  username: config.DB_USER,\n  password: config.DB_PASSWORD,\n  host: config.DB_HOST,\n  dialect: 'mysql',\n  models: [__dirname + '\/models'],\n});\n\nexport default sequelize;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Step 7: Define Your Models<\/h2>\n\n\n\n<p>Create a new model, for example, <code>Person<\/code>, in the <code>models<\/code> folder:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"typescript\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import { Table, Column, Model, DataType, CreatedAt, UpdatedAt } from 'sequelize-typescript';\n\n@Table({\n  tableName: 'persons',\n  timestamps: true,\n})\nexport class Person extends Model&lt;Person> {\n  @Column({\n    type: DataType.UUID,\n    defaultValue: DataType.UUIDV4,\n    primaryKey: true,\n  })\n  id!: string;\n\n  @Column({\n    type: DataType.STRING,\n    allowNull: false,\n  })\n  name!: string;\n\n  @CreatedAt\n  createdAt!: Date;\n\n  @UpdatedAt\n  updatedAt!: Date;\n}<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Step 8: Sync the Database<\/h2>\n\n\n\n<p>To create the tables based on your models, use the Sequelize <code>sync<\/code> method:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"typescript\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import sequelize from '.\/dbConnection';\nimport { Person } from '.\/models\/Person';\n\n(async () => {\n  await sequelize.sync({ force: true }); \/\/ For development use only\n  await Person.create({ name: 'Alex' });\n  console.log('Database synced and person created.');\n})();<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Step 9: Verify the Data<\/h2>\n\n\n\n<p>Switch back to TablePlus, refresh the database view, and you should see the <code>persons<\/code> table with the new entries.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>Integrating MySQL with your Node.js TypeScript project using Sequelize is a straightforward process. For smaller projects, using Sequelize&#8217;s <code>sync<\/code> method is convenient. However, for larger projects, consider using Sequelize migrations for better control over your database schema. If you&#8217;re interested in learning more about Sequelize migrations, check out our video on the topic.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Sequelize Migrations\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/OijsHjjRH5A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><strong>Happy coding!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Integrating an SQL database with a Node.js TypeScript project can greatly enhance your data management, and Sequelize makes this process easy. In this article, you&#8217;ll learn how to set up a MySQL database using Docker, configure connections in TypeScript, and create models with Sequelize. Perfect for developers looking to enhance their TypeScript applications with powerful SQL database capabilities.<\/p>\n","protected":false},"author":1,"featured_media":30821,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[15],"tags":[45,36,35],"class_list":["post-30802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","tag-nodejs","tag-sequelize","tag-typescript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Integrate Sequelize with Typescript in Node.js Project | Alex Rusin Blog<\/title>\n<meta name=\"description\" content=\"Seamlessly integrate Sequelize with Typescript in your Node.js Project. 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