74 lines
2.1 KiB
Markdown
74 lines
2.1 KiB
Markdown
---
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id: 58965611f9fc0f352b528e6c
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title: Logging a User Out
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challengeType: 2
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forumTopicId: 301560
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localeTitle: 用户退出登录
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---
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## Description
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<section id='description'>
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创建退出登录的逻辑是比较简单的。只要用户尝试退出登录，路由就应重定向到主页，而不应该显示任何其他页面。
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在 passport 里，只需要在重定向前调用 <code>req.logout();</code> 即可完成用户的退出登录。
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```js
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app.route('/logout')
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.get((req, res) => {
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req.logout();
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res.redirect('/');
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});
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```
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你可能注意到我们还没有处理 404 错误，这个错误码代表页面无法找到。在 Node.js 中我们通常会用如下的中间件来处理，请在所有路由之后添加这段代码：
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```js
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app.use((req, res, next) => {
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res.status(404)
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.type('text')
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.send('Not Found');
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});
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```
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完成上述要求后，你可以在下方提交你的页面链接。如果你遇到了问题，可以参考 <a href='https://gist.github.com/camperbot/c3eeb8a3ebf855e021fd0c044095a23b' target='_blank'>这里</a> 的答案。
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>req.Logout</code> 应在 <code>/logout</code> 中调用。
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testString: getUserInput => $.get(getUserInput('url')+ '/_api/server.js') .then(data => { assert.match(data, /req.logout/gi, 'You should be calling req.logout() in your /logout route'); }, xhr => { throw new Error(xhr.statusText); })
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- text: 退出登录后应重定向到主页 /
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testString: getUserInput => $.get(getUserInput('url')+ '/logout') .then(data => { assert.match(data, /Home page/gi, 'When a user logs out they should be redirected to the homepage'); }, xhr => { throw new Error(xhr.statusText); })
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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</section>
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## Solution
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<section id='solution'>
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```js
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/**
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Backend challenges don't need solutions,
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because they would need to be tested against a full working project.
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Please check our contributing guidelines to learn more.
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*/
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```
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</section>
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