在react-router v4中获取路径参数 [英] Get path params in react-router v4

问题描述

我正在尝试通过我的应用程序构建路由器链接，

I'm trying to build a router link through my application,

在这种情况下，我有三个文件。

In this scenario, I have three files.

App.js

Book.js

DetailedView.js

我在Book里面建立了一个< Link> ，它只在悬停时出现（在书籍封面上）

I have inside of Book built up a <Link> that only appears when hovered ( over a book cover )

{this.state.isHovered ? (
   <Link to={`/details/${this.props.book.industryIdentifiers[1].identifier}`}>
<div className="hover-box"></div>
</Link>) : ( <div /> )}

这将带我到/ details / 12345（isbn10号码）

This will take me to a /details/12345 (isbn10 number)

我很难理解的是如何例如
setState（{iPressedThisBook}）按< Link> 或者如果我可以在<$ c之后使用该部分$ c> / 12345 创建过滤器

The thing I have a hard time to understand is how to for example setState({iPressedThisBook}) when pressing <Link> or if i can use the part after /12345 to create like a filter

因为在 App 中路线将被连接为......

Because in App the Route will be hooked up as...

<Route path="/details/:id" render={() => (
          <BookDetailedView
            bookStateUpdated = {this.bookStateUpdated}
            book = {this.state.books}
          />
)}/>

我稍后想要获取：id 所以我在我的< BookDetailedView> this.props.book.find（：id） c $ c>

I, later on, want to grab the :id so that I make for example a this.props.book.find(:id) inside of my <BookDetailedView>

推荐答案

要在您的组件中接收路径参数，您需要先用<$连接组件c $ c> withRouter 来自 react-router 的HOC，以便您可以访问路径道具并获取路径 params 从匹配道具 this.props.match.params.id

In order to receive the path param in you component, you need to first connect your component with withRouter HOC from react-router so that you can access the Router props and get the path params from the match props as this.props.match.params.id

示例代码：

import {withRouter} from 'react-router';

class BookDetailedView extends React.Component {
    render() {
        var id = this.props.match.params.id


    }
}
export default withRouter(BookDetailedView) ;

或者只是将其与路线中的渲染道具一起传递为

or simply passing it with render prop in route as

<Route path="/details/:id" render={({match}) => (
          <BookDetailedView
            bookStateUpdated = {this.bookStateUpdated}
            book = {this.state.books}
            id={match.params.id}
          />
)}/>

来自 匹配

匹配

匹配对象包含有关<路径路径> 匹配
的URL。 匹配对象包含以下属性：

A match object contains information about how a <Route path> matched the URL. match objects contain the following properties:

• params - （对象）键/值从与路径的动态段对应的URL解析的对


• isExact - （布尔值）如果整个URL匹配（没有尾随字符），则为true


• path - （字符串）用于匹配的路径模式。用于构建嵌套的s


• url - （字符串）URL的匹配部分。用于构建嵌套的s

• params - (object) Key/value pairs parsed from the URL corresponding to the dynamic segments of the path
• isExact - (boolean) true if the entire URL was matched (no trailing characters)
• path - (string) The path pattern used to match. Useful for building nested s
• url - (string) The matched portion of the URL. Useful for building nested s

您将在不同的地方拥有访问匹配对象：

You’ll have access match objects in various places:

1. 路由组件为 this.props.match


2. 路线渲染为（{match} ）=>（）


3. 将子路由为（{match}）=>（）


4. withRouter as this.props.match


5. matchPath作为返回值

1. Route component as this.props.match
2. Route render as ({ match }) => ()
3. Route children as ({ match }) => ()
4. withRouter as this.props.match
5. matchPath as the return value

如果Route没有路径，因此总是匹配，那么你'll
获得最接近的父匹配。同样适用于路由器

If a Route does not have a path, and therefore always matches, you’ll get the closest parent match. Same goes for withRouter

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