drizzle-arktype

drizzle-arktype 是 Drizzle ORM 的一个插件，允许你从 Drizzle ORM 模式生成 Arktype 模式。

安装依赖

npm

yarn

pnpm

bun

npm i drizzle-arktype

yarn add drizzle-arktype

pnpm add drizzle-arktype

bun add drizzle-arktype

IMPORTANT

本文档适用于 drizzle-arktype@0.1.0 及更高版本

你还必须安装 Drizzle ORM v0.36.0 或更高版本和 Arktype v2.0.0 或更高版本。

选择 schema

定义从数据库查询的数据形状 - 可用于验证 API 返回的数据。

import { pgTable, text, integer } from 'drizzle-orm/pg-core';
import { createSelectSchema } from 'drizzle-arktype';

const users = pgTable('users', {
  id: integer().generatedAlwaysAsIdentity().primaryKey(),
  name: text().notNull(),
  age: integer().notNull()
});

const userSelectSchema = createSelectSchema(users);

const rows = await db.select({ id: users.id, name: users.name }).from(users).limit(1);
const parsed: { id: number; name: string; age: number } = userSelectSchema(rows[0]); // 错误：上述查询未返回 `age`

const rows = await db.select().from(users).limit(1);
const parsed: { id: number; name: string; age: number } = userSelectSchema(rows[0]); // 解析成功

视图和枚举类型也支持。

import { pgEnum } from 'drizzle-orm/pg-core';
import { createSelectSchema } from 'drizzle-arktype';

const roles = pgEnum('roles', ['admin', 'basic']);
const rolesSchema = createSelectSchema(roles);
const parsed: 'admin' | 'basic' = rolesSchema(...);

const usersView = pgView('users_view').as((qb) => qb.select().from(users).where(gt(users.age, 18)));
const usersViewSchema = createSelectSchema(usersView);
const parsed: { id: number; name: string; age: number } = usersViewSchema(...);

插入 schema

定义插入数据库数据的形状 - 可用于验证 API 请求。

import { pgTable, text, integer } from 'drizzle-orm/pg-core';
import { createInsertSchema } from 'drizzle-arktype';

const users = pgTable('users', {
  id: integer().generatedAlwaysAsIdentity().primaryKey(),
  name: text().notNull(),
  age: integer().notNull()
});

const userInsertSchema = createInsertSchema(users);

const user = { name: 'John' };
const parsed: { name: string, age: number } = userInsertSchema(user); // 错误：`age` 未定义

const user = { name: 'Jane', age: 30 };
const parsed: { name: string, age: number } = userInsertSchema(user); // 解析成功
await db.insert(users).values(parsed);

更新 schema

定义更新数据库数据的形状 - 可用于验证 API 请求。

import { pgTable, text, integer } from 'drizzle-orm/pg-core';
import { createUpdateSchema } from 'drizzle-arktype';
import { parse } from 'arktype';

const users = pgTable('users', {
  id: integer().generatedAlwaysAsIdentity().primaryKey(),
  name: text().notNull(),
  age: integer().notNull()
});

const userUpdateSchema = createUpdateSchema(users);

const user = { id: 5, name: 'John' };
const parsed: { name?: string | undefined, age?: number | undefined } = userUpdateSchema(user); // 错误：`id` 是生成列，不能更新

const user = { age: 35 };
const parsed: { name?: string | undefined, age?: number | undefined } = userUpdateSchema(user); // 解析成功
await db.update(users).set(parsed).where(eq(users.name, 'Jane'));

精细化定制

每个 create schema 函数都接受一个附加的可选参数，用于扩展、修改或完全覆盖字段的 schema。定义回调函数将扩展或修改 schema，直接提供 arktype schema 会覆盖原有字段。

import { pgTable, text, integer, json } from 'drizzle-orm/pg-core';
import { createSelectSchema } from 'drizzle-arktype';
import { parse, pipe, maxLength, object, string } from 'arktype';

const users = pgTable('users', {
  id: integer().generatedAlwaysAsIdentity().primaryKey(),
  name: text().notNull(),
  bio: text(),
  preferences: json()
});

const userSelectSchema = createSelectSchema(users, {
  name: (schema) => pipe(schema, maxLength(20)), // 扩展 schema
  bio: (schema) => pipe(schema, maxLength(1000)), // 扩展 schema，注意生效前字段可空/可选
  preferences: object({ theme: string() }) // 覆盖字段，包含其可空性
});

const parsed: {
  id: number;
  name: string,
  bio?: string | undefined;
  preferences: {
    theme: string;
  };
} = userSelectSchema(...);

数据类型参考

pg.boolean();

mysql.boolean();

sqlite.integer({ mode: 'boolean' });

// Schema
type.boolean;

pg.date({ mode: 'date' });
pg.timestamp({ mode: 'date' });

mysql.date({ mode: 'date' });
mysql.datetime({ mode: 'date' });
mysql.timestamp({ mode: 'date' });

sqlite.integer({ mode: 'timestamp' });
sqlite.integer({ mode: 'timestamp_ms' });

// Schema
type.Date;

pg.date({ mode: 'string' });
pg.timestamp({ mode: 'string' });
pg.cidr();
pg.inet();
pg.interval();
pg.macaddr();
pg.macaddr8();
pg.numeric();
pg.text();
pg.sparsevec();
pg.time();

mysql.binary();
mysql.date({ mode: 'string' });
mysql.datetime({ mode: 'string' });
mysql.decimal();
mysql.time();
mysql.timestamp({ mode: 'string' });
mysql.varbinary();

sqlite.numeric();
sqlite.text({ mode: 'text' });

// Schema
type.string;

pg.bit({ dimensions: ... });

// Schema
type(`/^[01]{${column.dimensions}}$/`);

pg.uuid();

// Schema
type(/^[\da-f]{8}(?:-[\da-f]{4}){3}-[\da-f]{12}$/iu);

pg.char({ length: ... });

mysql.char({ length: ... });

// Schema
type.string.exactlyLength(length);

pg.varchar({ length: ... });

mysql.varchar({ length: ... });

sqlite.text({ mode: 'text', length: ... });

// Schema
type.string.atMostLength(length);

mysql.tinytext();

// Schema
type.string.atMostLength(255); // 无符号 8 位整数范围限制

mysql.text();

// Schema
type.string.atMostLength(65_535); // 无符号 16 位整数范围限制

mysql.mediumtext();

// Schema
type.string.atMostLength(16_777_215); // 无符号 24 位整数范围限制

mysql.longtext();

// Schema
type.string.atMostLength(4_294_967_295); // 无符号 32 位整数范围限制

pg.text({ enum: ... });
pg.char({ enum: ... });
pg.varchar({ enum: ... });

mysql.tinytext({ enum: ... });
mysql.mediumtext({ enum: ... });
mysql.text({ enum: ... });
mysql.longtext({ enum: ... });
mysql.char({ enum: ... });
mysql.varchar({ enum: ... });
mysql.mysqlEnum(..., ...);

sqlite.text({ mode: 'text', enum: ... });

// Schema
type.enumerated(...enum);

mysql.tinyint();

// Schema
type.keywords.number.integer.atLeast(-128).atMost(127); // 8 位有符号整数上下限

mysql.tinyint({ unsigned: true });

// Schema
type.keywords.number.integer.atLeast(0).atMost(255); // 8 位无符号整数上下限

pg.smallint();
pg.smallserial();

mysql.smallint();

// Schema
type.keywords.number.integer.atLeast(-32_768).atMost(32_767); // 16 位有符号整数上下限

mysql.smallint({ unsigned: true });

// Schema
type.keywords.number.integer.atLeast(0).atMost(65_535); // 16 位无符号整数上下限

pg.real();

mysql.float();

// Schema
type.number.atLeast(-8_388_608).atMost(8_388_607); // 24 位整数上下限

mysql.mediumint();

// Schema
type.keywords.number.integer.atLeast(-8_388_608).atMost(8_388_607); // 24 位整数上下限

mysql.float({ unsigned: true });

// Schema
type.number.atLeast(0).atMost(16_777_215); // 24 位无符号整数上下限

mysql.mediumint({ unsigned: true });

// Schema
type.keywords.number.integer.atLeast(0).atMost(16_777_215); // 24 位无符号整数上下限

pg.integer();
pg.serial();

mysql.int();

// Schema
type.keywords.number.integer.atLeast(-2_147_483_648).atMost(2_147_483_647); // 32 位整数上下限

mysql.int({ unsigned: true });

// Schema
type.keywords.number.integer.atLeast(0).atMost(4_294_967_295); // 32 位无符号整数上下限

pg.doublePrecision();

mysql.double();
mysql.real();

sqlite.real();

// Schema
type.number.atLeast(-140_737_488_355_328).atMost(140_737_488_355_327); // 48 位整数上下限

mysql.double({ unsigned: true });

// Schema
type.number.atLeast(0).atMost(281_474_976_710_655); // 48 位无符号整数上下限

pg.bigint({ mode: 'number' });
pg.bigserial({ mode: 'number' });

mysql.bigint({ mode: 'number' });
mysql.bigserial({ mode: 'number' });

sqlite.integer({ mode: 'number' });

// Schema
type.keywords.number.integer.atLeast(-9_007_199_254_740_991).atMost(9_007_199_254_740_991); // JavaScript 最小最大安全整数

mysql.serial();

// Schema
type.keywords.number.integer.atLeast(0).atMost(9_007_199_254_740_991); // JavaScript 最大安全整数

pg.bigint({ mode: 'bigint' });
pg.bigserial({ mode: 'bigint' });

mysql.bigint({ mode: 'bigint' });

sqlite.blob({ mode: 'bigint' });

// Schema
type.bigint.narrow(
  (value, ctx) => value < -9_223_372_036_854_775_808n ? ctx.mustBe('greater than') : value > 9_223_372_036_854_775_807n ? ctx.mustBe('less than') : true
); // 64 位整数上下限

mysql.bigint({ mode: 'bigint', unsigned: true });

// Schema
type.bigint.narrow(
  (value, ctx) => value < 0n ? ctx.mustBe('greater than') : value > 18_446_744_073_709_551_615n ? ctx.mustBe('less than') : true
); // 64 位无符号整数上下限

mysql.year();

// Schema
type.keywords.number.integer.atLeast(1_901).atMost(2_155);

pg.geometry({ type: 'point', mode: 'tuple' });
pg.point({ mode: 'tuple' });

// Schema
type([type.number, type.number]);

pg.geometry({ type: 'point', mode: 'xy' });
pg.point({ mode: 'xy' });

// Schema
type({ x: type.number, y: type.number });

pg.halfvec({ dimensions: ... });
pg.vector({ dimensions: ... });

// Schema
type.number.array().exactlyLength(dimensions);

pg.line({ mode: 'abc' });

// Schema
type({ a: type.number, b: type.number, c: type.number });

pg.line({ mode: 'tuple' });

// Schema
type([type.number, type.number, type.number]);

pg.json();
pg.jsonb();

mysql.json();

sqlite.blob({ mode: 'json' });
sqlite.text({ mode: 'json' });

// Schema
type('string | number | boolean | null').or(type('unknown.any[] | Record<string, unknown.any>'));

sqlite.blob({ mode: 'buffer' });

// Schema
type.instanceOf(Buffer);

pg.dataType().array(...);

// Schema
baseDataTypeSchema.array().exactlyLength(size);