ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
88 lines
2.6 KiB
Markdown
88 lines
2.6 KiB
Markdown
---
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id: 5895f70df9fc0f352b528e6a
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title: 创建新的中间件
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challengeType: 2
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forumTopicId: 301551
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dashedName: create-new-middleware
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---
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# --description--
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无论是否登录，或者哪怕用户试图访问其他页面，目前都会跳转到 `/profile`。为了解决这个问题，我们需要在 profile 页面渲染之前进行用户验证，创建中间件就可以实现这个功能。
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这个挑战的目标是创建`ensureAuthenticated(req, res, next)`中间件方法，通过在 *request* 上调用 passports 的`isAuthenticated` 方法，我们可以检查 *req.user* 是否定义，从而确定用户是否通过认证。如果用户已通过验证，就会调用 *next()*，否则我们应重定向到主页并让用户登录。该中间件的实现如下：
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```js
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function ensureAuthenticated(req, res, next) {
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if (req.isAuthenticated()) {
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return next();
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}
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res.redirect('/');
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};
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```
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然后，我们需要把 *ensureAuthenticated* 中间件添加到处理请求的回调之前：
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```js
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app
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.route('/profile')
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.get(ensureAuthenticated, (req,res) => {
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res.render(process.cwd() + '/views/pug/profile');
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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 [这里](https://gist.github.com/camperbot/ae49b8778cab87e93284a91343da0959) 的答案。
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# --hints--
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`ensureAuthenticated` 中间件应添加到 `/profile`路由中。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/server.js').then(
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(data) => {
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assert.match(
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data,
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/ensureAuthenticated[^]*req.isAuthenticated/gi,
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'Your ensureAuthenticated middleware should be defined and utilize the req.isAuthenticated function'
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);
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assert.match(
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data,
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/profile[^]*get[^]*ensureAuthenticated/gi,
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'Your ensureAuthenticated middleware should be attached to the /profile route'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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如果没有通过验证，对 /profile 的 GET 请求应重定向到 /
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/profile').then(
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(data) => {
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assert.match(
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data,
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/Home page/gi,
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'An attempt to go to the profile at this point should redirect to the homepage since we are not logged in'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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# --solutions--
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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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