开始使用 Drizzle 和 D1

Basic file structure

This is the basic file structure of the project. In the src/db directory, we have table definition in schema.ts. In drizzle folder there are sql migration file and snapshots.

📦 <project root>
 ├ 📂 drizzle
 ├ 📂 src
 │   ├ 📂 db
 │   │  └ 📜 schema.ts
 │   └ 📜 index.ts
 ├ 📜 .env
 ├ 📜 drizzle.config.ts
 ├ 📜 package.json
 └ 📜 tsconfig.json

步骤 1 - 安装所需软件包

npm i drizzle-orm  dotenv
npm i -D drizzle-kit tsx

yarn add drizzle-orm  dotenv
yarn add -D drizzle-kit tsx

pnpm add drizzle-orm  dotenv
pnpm add -D drizzle-kit tsx

bun add drizzle-orm  dotenv
bun add -D drizzle-kit tsx

步骤 2 - 设置 wrangler.toml

你需要一个用于 D1 数据库的 wrangler.toml 文件，其内容如下：

name = "YOUR PROJECT NAME"
main = "src/index.ts"
compatibility_date = "2022-11-07"
node_compat = true

[[ d1_databases ]]
binding = "DB"
database_name = "YOUR DB NAME"
database_id = "YOUR DB ID"
migrations_dir = "drizzle"

步骤 3 - 将 Drizzle ORM 连接到数据库

import { drizzle } from 'drizzle-orm/d1';

export interface Env {
  <BINDING_NAME>: D1Database;
}
export default {
  async fetch(request: Request, env: Env) {
    const db = drizzle(env.<BINDING_NAME>);
  },
};

步骤 4 - 创建表

Create a schema.ts file in the src/db directory and declare your table:

import { int, sqliteTable, text } from "drizzle-orm/sqlite-core";

export const usersTable = sqliteTable("users_table", {
  id: int().primaryKey({ autoIncrement: true }),
  name: text().notNull(),
  age: int().notNull(),
  email: text().notNull().unique(),
});

步骤 5 - 设置 Drizzle 配置文件

Drizzle 配置 - Drizzle 套件 使用的配置文件，包含有关数据库连接、迁移文件夹和模式文件的所有信息。

在项目根目录中创建一个 drizzle.config.ts 文件并添加以下内容：

import 'dotenv/config';
import { defineConfig } from 'drizzle-kit';

export default defineConfig({
  out: './drizzle',
  schema: './src/db/schema.ts',
  dialect: 'sqlite',
  driver: 'd1-http',
  dbCredentials: {
    accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
    databaseId: process.env.CLOUDFLARE_DATABASE_ID!,
    token: process.env.CLOUDFLARE_D1_TOKEN!,
  },
});

步骤 6 - 应用更改到数据库

You can directly apply changes to your database using the drizzle-kit push command. This is a convenient method for quickly testing new schema designs or modifications in a local development environment, allowing for rapid iterations without the need to manage migration files:

npx drizzle-kit push

Read more about the push command in documentation.

npx drizzle-kit generate

npx drizzle-kit migrate

步骤 7 - 种子和查询数据库

import { drizzle } from 'drizzle-orm/d1';

export interface Env {
  <BINDING_NAME>: D1Database;
}
export default {
  async fetch(request: Request, env: Env) {
    const db = drizzle(env.<BINDING_NAME>);
    const result = await db.select().from(users).all()
    return Response.json(result);
  },
};

步骤 8 - 运行 index.ts 文件

To run any TypeScript files, you have several options, but let’s stick with one: using tsx

You’ve already installed tsx, so we can run our queries now

Run index.ts script

npx tsx src/index.ts

yarn tsx src/index.ts

pnpm tsx src/index.ts

bun tsx src/index.ts

bun src/index.ts