react超出最大调用堆栈大小

Question

我尝试将用户重定向到"TrapPage",如果他没有登录.

这是我的代码:

function requireAuth(nextState, replace) {
    if (!auth.loggedIn()) {
        replace({ 
            pathname:'/trap'
        })
    }
}

export default (
    <Route path="/" component={App} onEnter={requireAuth}>
        <IndexRoute component={DashboardPage} />
        <Route path="trap">
            <IndexRoute component={TrapPage}/>
        </Route>
        <Route path="accounts">
            <IndexRoute component={AccountPage}/>
            <Route path="add" component={AccountAdd} />
            <Route path="detail/:id" component={AccountDetail} />
        </Route>
        <Route path="contacts">
            <Route path="detail/:id" component={ContactPage}/>
        </Route>
        <Route path="transmissors">
            <Route path="detail/:id" component={TransmissorPage}/>
        </Route>
        <Route path="attends" component={AttendancePage} />
        <Route path="reports" component={ReportPage} />
        <Route path="configs" component={ConfigurationPage} />
    </Route>
);

当我将函数requireAuth放在onEnter时,控制台给出了一个错误:

Uncaught RangeError: Maximum call stack size exceeded

我是React的先生,请耐心等待:)

我的代码出了什么问题？

Answer 1

如果他没有登录,则需要在将用户重定向到的相同路由上进行身份验证.这会导致无限循环重定向用户,因为他没有登录.可能会<Route path="trap">从需要身份验证的路由下移出.

此外,您缺少函数的第三个参数.

function requireAuth(nextState, replace)

应该

function requireAuth(nextState, replace, cb) {

一旦完成了身份验证逻辑,就需要这样调用cb:

function requireAuth(nextState, replace) {
    if (!auth.loggedIn()) {
        replace({ 
            pathname:'/trap'
        });
    }

    cb();
}

它是一个回调函数,可以让路由流继续.

编辑:

您可以重新组织您的路线:

<Route path="/" component={App}>
    <IndexRoute component={DashboardPage} />
    <Route path="trap">
        <IndexRoute component={TrapPage}/>
    </Route>
    <Route onEnter={requireAuth}>
        <Route path="accounts">
            <IndexRoute component={AccountPage}/>
            <Route path="add" component={AccountAdd} />
            <Route path="detail/:id" component={AccountDetail} />
        </Route>
        <Route path="contacts">
            <Route path="detail/:id" component={ContactPage}/>
        </Route>
        <Route path="transmissors">
            <Route path="detail/:id" component={TransmissorPage}/>
        </Route>
        <Route path="attends" component={AttendancePage} />
        <Route path="reports" component={ReportPage} />
        <Route path="configs" component={ConfigurationPage} />
   </Route>
</Route>

然后,根据您是否需要在仪表板上进行身份验证,您也可以添加onEnter={requireAuth}到该路由.这将从需要身份验证的路由中分离出不需要身份验证的路由.