实用工具
用于处理查询字符串的实用工具
序列化器助手
Introduced in version 1.16.0.
要使用状态值填充 <Link> 组件,您可以使用 createSerializer 助手。
将描述搜索参数的对象传递给它,它将返回一个函数,该函数接受值并生成由钩子序列化的查询字符串。
示例:
import {
createSerializer,
parseAsInteger,
parseAsIsoDateTime,
parseAsString,
parseAsStringLiteral
} from 'nuqs/server' // can also be imported from 'nuqs' in client code
const searchParams = {
search: parseAsString,
limit: parseAsInteger,
from: parseAsIsoDateTime,
to: parseAsIsoDateTime,
sortBy: parseAsStringLiteral(['asc', 'desc'])
}
// Create a serializer function by passing the description of the search params to accept
const serialize = createSerializer(searchParams)
// Then later, pass it some values (a subset) and render them to a query string
serialize({
search: 'foo bar',
limit: 10,
from: new Date('2024-01-01'),
// here, we omit `to`, which won't be added
sortBy: null // null values are also not rendered
})
// ?search=foo+bar&limit=10&from=2024-01-01T00:00:00.000Z基础参数
返回的 serialize 函数可以接受一个基础参数,在其上追加/修改搜索参数:
serialize('/path?baz=qux', { foo: 'bar' }) // /path?baz=qux&foo=bar
const search = new URLSearchParams('?baz=qux')
serialize(search, { foo: 'bar' }) // ?baz=qux&foo=bar
const url = new URL('https://example.com/path?baz=qux')
serialize(url, { foo: 'bar' }) // https://example.com/path?baz=qux&foo=bar
// Passing null removes existing values
serialize('?remove=me', { foo: 'bar', remove: null }) // ?foo=bar更短的搜索参数键
就像在 useQueryStates 中一样,您可以定义一个 urlKeys 对象,将由解析器定义的变量名映射到 URL 中的更短键:
const serialize = createSerializer(
{
// 1. Use variable names that make sense for your domain/business logic
latitude: parseAsFloat,
longitude: parseAsFloat,
zoomLevel: parseAsInteger
},
{
// 2. Remap them to shorter keys in the URL
urlKeys: {
latitude: 'lat',
longitude: 'lng',
zoomLevel: 'z'
}
}
)
// 3. Use your variable names when calling the serializer,
// and the shorter keys will be rendered in the URL:
serialize({
latitude: 45.18,
longitude: 5.72,
zoomLevel: 12
})
// ?lat=45.18&lng=5.72&z=12处理 URLSearchParams
Introduced in version 2.6.0.
就像在 <NuqsAdapter> 中一样,您可以指定一个 processUrlSearchParams 函数,在序列化之前修改搜索参数。
例如,通过按字母顺序排序搜索参数键,这对于一致的规范 URL(用于 SEO)很有用:
const serialize = createSerializer(
{
a: parseAsInteger,
z: parseAsInteger
},
{
processUrlSearchParams: (search) => {
// Note: you can modify search in-place,
// or return a copy, as you wish.
search.sort()
return search
}
}
)
serialize('?foo=bar', {
a: 1,
z: 1
})
// ?a=1&foo=bar&z=1
// merged, then sorted解析器类型推断
Introduced in version 1.18.0.
要访问解析器返回的底层类型,您可以使用 inferParserType 类型助手:
import { parseAsInteger, type inferParserType } from 'nuqs' // or 'nuqs/server'
const intNullable = parseAsInteger
const intNonNull = parseAsInteger.withDefault(0)
inferParserType<typeof intNullable> // number | null
inferParserType<typeof intNonNull> // number对于描述解析器的对象(您会将其传递给 createLoader 或 useQueryStates),inferParserType 将返回对象类型,其中解析器被替换为其推断类型:
import {
parseAsBoolean,
parseAsInteger,
type inferParserType
} from 'nuqs' // or 'nuqs/server'
const parsers = {
a: parseAsInteger,
b: parseAsBoolean.withDefault(false)
}
inferParserType<typeof parsers>
// { a: number | null, b: boolean }标准 Schema
Introduced in version 2.5.0.
搜索参数定义可以转换为 Standard Schema,用于验证外部源并将类型推断传递给其他工具。
import {
createStandardSchemaV1,
parseAsInteger,
parseAsString,
} from 'nuqs' // or 'nuqs/server'
// 1. Define your search params as usual
export const searchParams = {
searchTerm: parseAsString.withDefault(''),
maxResults: parseAsInteger.withDefault(10)
}
// 2. Then create a Standard Schema compatible validator
export const validateSearchParams = createStandardSchemaV1(searchParams)
// 3. Use it with other tools, like tRPC:
router({
search: publicProcedure.input(validateSearchParams).query(...)
})TanStack Router & validateSearch
您可以将标准 schema 验证器传递给 TanStack Router 的 validateSearch,以实现类型安全的 nuqs URL 状态链接,但为了保持这些值可选(因为 nuqs 使用与 TSR 不同的默认策略),您需要将输出标记为 Partial,使用 partialOutput 选项:
import { createStandardSchemaV1 } from 'nuqs'
const validateSearch = createStandardSchemaV1(searchParams, {
partialOutput: true
})
export const Route = createFileRoute('/search')({
validateSearch
})注意
TanStack Router 支持仍处于实验阶段,并带有注意事项, 请参阅 适配器文档 以获取更多关于支持内容的信息。