在react-router中保留查询参数

Question

在我的React应用程序中，我有一些用户进入应用程序的参数，这些参数提供有关它们来自何处的一些信息。有没有一种方法可以使用react-
router在整个应用程序中保留这些查询参数。意思是每次更改路线时，Id都会像那些查询参数一样保留在url中。我看到的唯一示例是在路由之间传递查询参数，但没有为每个路由都保留它们。

Answer 1

React-Router v3的解决方案：

我在Typescript中编写了这个小的历史记录
v3（与react-router v3
兼容）增强器。它将保留给定的查询参数集。注意，传递给此函数的历史记录必须通过useQueries进行增强。

import {History, Location, LocationDescriptor} from 'history'

export default function preserveQueryHistory(history: History, queryParameters: string[]): History {
    function preserveQueryParameters(path: LocationDescriptor): Location {
        const location = history.createLocation(path)
        const currentQuery = history.getCurrentLocation().query
        for (let p of queryParameters) {
            const v = (currentQuery as any)[p]
            if (v) {
                location.query[p] = v
            }
        }
        return location
    }
    return {
        ...history,
        push(path: LocationDescriptor) {
            history.push(preserveQueryParameters(path))
        },
        replace(path: LocationDescriptor) {
            history.replace(preserveQueryParameters(path))
        }
    }
}

现在使用它来创建历史记录：

import useQueries from 'history/lib/useQueries'
import createBrowserHistory from 'history/lib/createBrowserHistory'
import preserveQueryHistory from './preserveQueryHistory'

const history = preserveQueryHistory(useQueries(createBrowserHistory)(), ['language'])

在反应路由器中：

<Router history={history}>
...
</Router>

*具有CreateHistory增强器功能的 *最终解决方案 ，该 解决方案
嵌入了应用useQueries增强器并提供了注入自定义History增强器的能力：

import {CreateHistory, History, HistoryOptions, HistoryQueries, Location, LocationDescriptor} from 'history'
import useQueries from 'history/lib/useQueries'

function preserveQueryParameters(history: History, queryParameters: string[], path: LocationDescriptor): Location {
    const location = history.createLocation(path)
    const currentQuery = history.getCurrentLocation().query
    for (let p of queryParameters) {
        const v = (currentQuery as any)[p]
        if (v) {
            location.query[p] = v
        }
    }
    return location
}

function enhanceHistory<H>(history: History & H, queryParameters: string[]): History & H {
    return Object.assign({}, history, {
        push(path: LocationDescriptor) {
            history.push(preserveQueryParameters(history, queryParameters, path))
        },
        replace(path: LocationDescriptor) {
            history.replace(preserveQueryParameters(history, queryParameters, path))
        }
    })
}

export function createPreserveQueryHistoryWithEnhancer<O, H, H2>(createHistory: CreateHistory<O, H>,
    queryParameters: string[], enhancer: (h: History) => History & H2): CreateHistory<O, H & H2 & HistoryQueries> {
    return function (options?: HistoryOptions & O): History & H & H2 & HistoryQueries {
        let h = enhancer(useQueries(createHistory)(options)) as History & H & H2 & HistoryQueries
        return enhanceHistory<H & H2 & HistoryQueries>(h, queryParameters)
    }
}

export function createPreserveQueryHistory<O, H>(createHistory: CreateHistory<O, H>,
    queryParameters: string[]): CreateHistory<O, H & HistoryQueries> {
    return createPreserveQueryHistoryWithEnhancer<O, H, {}>(createHistory, queryParameters, h => h)
}

export function preserveQueryHistoryWithEnhancer<H, H2>(history: History & H, queryParameters: string[],
    enhancer: (h: History) => History & H2): History & HistoryQueries & H & H2 {
    return createPreserveQueryHistoryWithEnhancer(
        function () {
            return history
        },
        queryParameters, enhancer)()
}

export function preserveQueryHistory<H>(history: History & H, queryParameters: string[]): History & HistoryQueries & H {
    return preserveQueryHistoryWithEnhancer<H, {}>(history, queryParameters, h => h)
}

与syncHistoryWithStore react-router-redux v4
History增强器配合使用：

import createBrowserHistory from 'history/lib/createBrowserHistory'
import {createPreserveQueryHistoryWithEnhancer} from './preserveQueryHistory'
import {syncHistoryWithStore} from 'react-router-redux'

const store = ...

const history = createPreserveQueryHistoryWithEnhancer(createBrowserHistory, ['language'], function (h: History) {
    return syncHistoryWithStore(h, store)
})()