* 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>
80 lines
3.2 KiB
Markdown
80 lines
3.2 KiB
Markdown
---
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id: 5895f70df9fc0f352b528e69
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title: 如何使用 Passport 策略
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challengeType: 2
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forumTopicId: 301555
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dashedName: how-to-use-passport-strategies
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---
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# --description--
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在提供的 index.pug 文件里有一个登录表单。因为这个表单中存在行内 JavaScript 代码 `if showLogin`,因此它是隐藏的。因为 showLogin 未定义,所以表单不会渲染。如果在该页面的 `res.render()` 里添加一个包含 `showLogin: true` 的对象,你就可以在刷新页面后看到表单。当你点击 login 时,表单会向服务器的 */login 发送 POST 请求,此时服务器端就可以接受 POST 请求信息并进行用户验证。*
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在这个挑战中,你需要为 POST 请求添加路由`/login`。为了用这个路由进行验证,你需要添加一个中间件,中间件应作为参数添加到用于处理请求的回调函数 `function(req,res)` 之前。对于 passport 的验证中间件,应这样调用:`passport.authenticate('local')`。
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*passport.authenticate* 也接收选项作为参数,这些选项用于设置验证,例如`{ failureRedirect: '/' }`就很有用,请记得添加到你的代码中。如果中间件验证通过,我们就应该提供相应的后续处理。在这个挑战中,我们需要让用户重定到 */profile*,这样 `profile.pug` 页面就会渲染。
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如果验证通过,用户对象将会储存到 *req.user* 中。
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这时,如果你在表单里输入了用户名和密码,路由将会重定向到主页 */*,在服务端将会打印 'User {USERNAME} attempted to log in.',由于现在我们还没有实现注册功能,因此所有登录尝试都会失败。
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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/7ad011ac54612ad53188b500c5e99cb9) 的答案。
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# --hints--
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server.js 中应正确执行所有步骤。
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```js
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(getUserInput) =>
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$.get(getUserInput('url') + '/_api/server.js').then(
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(data) => {
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assert.match(
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data,
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/showLogin:( |)true/gi,
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'You should be passing the variable "showLogin" as true to your render function for the homepage'
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);
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assert.match(
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data,
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/failureRedirect:( |)('|")\/('|")/gi,
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'Your code should include a failureRedirect to the "/" route'
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);
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assert.match(
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data,
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/login[^]*post[^]*local/gi,
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'You should have a route for login which accepts a POST and passport.authenticates local'
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);
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},
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(xhr) => {
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throw new Error(xhr.statusText);
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}
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);
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```
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到 /login 的 POST 请求应重定向到 /
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```js
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(getUserInput) =>
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$.post(getUserInput('url') + '/login').then(
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(data) => {
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assert.match(
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data,
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/Looks like this page is being rendered from Pug into HTML!/gi,
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'A login attempt at this point should redirect to the homepage since we do not have any registered users'
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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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