将道具传递给 React Router 子路由 [英] Passing props to React Router children routes

问题描述

我无法解决 React 路由器的问题.场景是我需要从状态父组件和路由中传递子路由一组道具.
我想要做的是通过 childRouteA 它的 propsA，并通过 childRouteB 它的 propsB.但是，我能弄清楚如何做到这一点的唯一方法是通过 RouteHandler propsA 和 propsB 这意味着每个子路由都会得到每个子节点prop不管它是否相关.目前这不是阻塞问题，但我可以看到我会使用两个相同组件的时间，这意味着 propA 上的键将被 propB 的键覆盖.

# 个路由路线 = (<Route name='filter' handler={ Parent } ><Route name='price' handler={ Child1 }/><Route name='time' handler={ Child2 }/></路线>)# 父组件渲染:-><div><RouteHandler {...@allProps()}/>

时间道具:->foo: '酒吧'价格道具:->巴兹:'qux'#assign = require 'object-assign'所有道具:->分配 {}、timeProps()、priceProps()

这实际上按照我期望的方式工作.当我链接到 /filters/time 时，我会渲染 Child2 组件.当我去 /filters/price 我得到 Child1 组件呈现.问题是，通过执行此过程，Child1 和 Child2 都通过了 allProps()，即使它们分别只需要价格和时间道具.如果这两个组件具有相同的 prop 名称，这可能会成为一个问题，并且一般来说，使用不需要的 props 来膨胀组件并不是一个好习惯(因为在我的实际情况下有超过 2 个子组件).
总之，当我去时间路线(filters/time)并且只通过priceProps时，有没有办法通过RouteHandler timePropsRouteHandler 当我转到价格路线(filters/price)并避免将所有道具传递给所有子路线时?

解决方案

我遇到了类似的问题，发现你可以通过 this.props.route 访问 Route 上设置的 props 在您的路由组件中.知道这一点后，我将我的组件组织成这样:

index.js

React.render((<路由器历史={new HashHistory()}><路由组件={App}><路线路径=/你好"名称=你好"组件={views.HelloView}水果={['橙色'，'香蕉'，'葡萄']}/></路线></路由器>), document.getElementById('app'));

App.js

class App 扩展 React.Component {构造函数(道具){超级(道具)；}使成为() {返回<div>{this.props.children}</div>;}}

HelloView.js

class HelloView 扩展 React.Component {构造函数(道具){超级(道具)；}使成为() {返回 
<ul>{this.props.route.fruits.map(fruit =><li key={fruit}>{fruit}</li>)}
;}}

这是使用 react-router v1.0-beta3.希望这会有所帮助！

<小时>

好的，现在我更了解您的问题了，以下是您可以尝试的方法.

由于您的子 props 来自单个父级，您的父组件，而不是 react-router，应该是管理哪些子组件被渲染的组件，以便您可以控制传递哪些 props.

您可以尝试更改路由以使用参数，然后在父组件中检查该参数以呈现适当的子组件.

路线

父组件

render: function () {如果(this.props.params.name === '价格'){返回 <Child1 {...this.getPriceProps()}/>} else if (this.props.params.name === '时间') {返回 <Child2 {...this.getTimeProps()}/>} 别的 {//别的}}

I'm having trouble overcoming an issue with react router. The scenario is that i need to pass children routes a set of props from a state parent component and route.
what i would like to do is pass childRouteA its propsA, and pass childRouteB its propsB. However, the only way i can figure out how to do this is to pass RouteHandler both propsA and propsB which means every child route gets every child prop regardless of whether its relevant. this isnt a blocking issue at the moment, but i can see a time when i'd be using the two of the same component which means that keys on propA will overwritten by the keys by the keys of propB.

# routes
routes = (
  <Route name='filter' handler={ Parent } >
    <Route name='price' handler={ Child1 } />
    <Route name='time' handler={ Child2 } />
  </Route>
)

# Parent component
render: ->
  <div>
    <RouteHandler {...@allProps()} />
  </div>

timeProps: ->
  foo: 'bar'

priceProps: ->
  baz: 'qux'

# assign = require 'object-assign'
allProps: ->
  assign {}, timeProps(), priceProps()

This actually works the way i expect it to. When i link to /filters/time i get the Child2 component rendered. when i go to /filters/price i get the Child1 component rendered. the issue is that by doing this process, Child1 and Child2 are both passed allProps() even though they only need price and time props, respectively. This can become an issue if those two components have an identical prop name and in general is just not a good practice to bloat components with unneeded props (as there are more than 2 children in my actual case).
so in summary, is there a way to pass the RouteHandler timeProps when i go to the time route (filters/time) and only pass priceProps to RouteHandler when i go to the price route (filters/price) and avoid passing all props to all children routes?

解决方案

I ran into a similar issue and discovered that you can access props set on the Route through this.props.route in your route component. Knowing this, I organized my components like this:

index.js

React.render((
  <Router history={new HashHistory()}>
    <Route component={App}>
        <Route
          path="/hello"
          name="hello"
          component={views.HelloView}
          fruits={['orange', 'banana', 'grape']}
        />
    </Route>
  </Router>
), document.getElementById('app'));

App.js

class App extends React.Component {
  constructor(props) {
    super(props);
  }

  render() {
    return <div>{this.props.children}</div>;
  }
}

HelloView.js

class HelloView extends React.Component {
  constructor(props) {
    super(props);
  }

  render() {
    return <div>
      <ul>
        {this.props.route.fruits.map(fruit => 
          <li key={fruit}>{fruit}</li>
        )}
      </ul>
    </div>;
  }
}

This is using react-router v1.0-beta3. Hope this helps!

---

Ok, now that I'm understanding your issue better, here's what you could try.

Since your child props are coming from a single parent, your parent component, not react-router, should be the one managing which child gets rendered so that you can control which props are passed.

You could try changing your route to use a param, then inspect that param in your parent component to render the appropriate child component.

Route

<Route name="filter" path="filter/:name" handler={Parent} />

Parent Component

render: function () {
  if (this.props.params.name === 'price') {
    return <Child1 {...this.getPriceProps()} />
  } else if (this.props.params.name === 'time') {
    return <Child2 {...this.getTimeProps()} />
  } else {
    // something else
  }
}

这篇关于将道具传递给 React Router 子路由的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！