您可以查看 我们的教程,了解如何从 CloudFlare 获取环境变量
开始使用 Drizzle 和 D1
基本文件结构
这是项目的基本文件结构。在 src/db
目录中,我们在 schema.ts
中有表定义。在 drizzle
文件夹中,有 SQL 迁移文件和快照。
📦 <project root>
├ 📂 drizzle
├ 📂 src
│ ├ 📂 db
│ │ └ 📜 schema.ts
│ └ 📜 index.ts
├ 📜 .env
├ 📜 drizzle.config.ts
├ 📜 package.json
└ 📜 tsconfig.json
第一步 - 安装所需的包
npm i drizzle-orm dotenv
npm i -D drizzle-kit tsx
第二步 - 设置 wrangler.toml
您需要一个 wrangler.toml
文件用于 D1 数据库,其内容大致如下:
name = "您的项目名称"
main = "src/index.ts"
compatibility_date = "2022-11-07"
node_compat = true
[[ d1_databases ]]
binding = "DB"
database_name = "您的数据库名称"
database_id = "您的数据库 ID"
migrations_dir = "drizzle"
第三步 - 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>);
},
};
第四步 - 创建一个表
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(),
});
第五步 - 设置 Drizzle 配置文件
Drizzle 配置 - 一个供 Drizzle Kit 使用的配置文件,包含有关您的数据库连接、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: '',
dbCredentials: {
accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
databaseId: process.env.CLOUDFLARE_DATABASE_ID!,
token: process.env.CLOUDFLARE_D1_TOKEN!,
},
});
第六步 - 将更改应用于数据库
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.
Alternatively, you can generate migrations using the drizzle-kit generate
command and then apply them using the drizzle-kit migrate
command:
Generate migrations:
npx drizzle-kit generate
Apply migrations:
npx drizzle-kit migrate
Read more about migration process in documentation.
第七步 - 初始化并查询数据库
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);
},
};
第八步 - 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
We suggest using bun
to run TypeScript files. With bun
, such scripts can be executed without issues or additional
settings, regardless of whether your project is configured with CommonJS (CJS), ECMAScript Modules (ESM), or any other module format.
To run a script with bun
, use the following command:
bun src/index.ts
If you don’t have bun installed, check the Bun installation docs