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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,94 +1,4 @@ | ||
| // create web server that listens on port 3000 | ||
| // When you visit localhost:3000 in your browser, you should see a list of comments | ||
| // When you visit localhost:3000/new in your browser, you should see a form to add a new comment | ||
| // When you visit localhost:3000/new and submit the form, the server should add the comment to the list of comments | ||
| // When you visit localhost:3000/new and submit the form, you should be redirected to localhost:3000 | ||
| // When you visit localhost:3000/comments/:id, you should see the comment with the corresponding id | ||
| // When you visit localhost:3000/comments/:id, you should see a link to delete the comment | ||
| // When you visit localhost:3000/comments/:id/delete, the comment should be removed from the list of comments | ||
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| var express = require('express'); | ||
| var bodyParser = require('body-parser'); | ||
| var app = express(); | ||
| var fs = require('fs'); | ||
| var comments = require('./comments.json'); | ||
| var path = require('path'); | ||
| var _ = require('underscore'); | ||
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| app.use(express.static('public')); | ||
| app.use(bodyParser.urlencoded({extended: true})); | ||
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| app.get('/comments', function(req, res){ | ||
| var commentsHtml = '<ul>'; | ||
| comments.forEach(function(comment){ | ||
| commentsHtml += '<li><a href="/comments/' + comment.id + '">' + comment.body + '</a></li>'; | ||
| }); | ||
| commentsHtml += '</ul>'; | ||
| res.send(commentsHtml); | ||
| }); | ||
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| app.get('/comments/new', function(req, res){ | ||
| res.sendFile(path.join(__dirname, 'public', 'new.html')); | ||
| }); | ||
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| app.post('/comments', function(req, res){ | ||
| var newComment = req.body; | ||
| newComment.id = comments.length + 1; | ||
| comments.push(newComment); | ||
| fs.writeFile('comments.json', JSON.stringify(comments), function(err){ | ||
| if (err) { | ||
| res.status(500).send('Something went wrong'); | ||
| } else { | ||
| res.redirect('/comments'); | ||
| } | ||
| }); | ||
| }); | ||
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| app.get('/comments/:id', function(req, res){ | ||
| var comment = _.findWhere(comments, {id: parseInt(req.params.id)}); | ||
| res.send(comment.body); | ||
| }); | ||
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| app.get('/comments/:id/delete', function(req, res){ | ||
| comments = comments.filter(function(comment){ | ||
| return comment.id !== parseInt(req.params.id); | ||
| }); | ||
| fs.writeFile('comments.json', JSON.stringify(comments), function(err){ | ||
| if (err) { | ||
| res.status(500).send('Something went wrong'); | ||
| } else { | ||
| res.redirect('/comments'); | ||
| } | ||
| }); | ||
| }); | ||
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| app.listen(3000, function(){ | ||
| console.log('Server listening on port 3000'); | ||
| }); | ||
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| module.exports = app; | ||
| // Path: comments.json | ||
| // [] | ||
| // Path: public/new.html | ||
| // <!DOCTYPE html> | ||
| // <html> | ||
| // <head> | ||
| // <title>New Comment</title> | ||
| // </head> | ||
| // <body> | ||
| // <h1>New Comment</h1> | ||
| // <form action="/comments" method="post"> | ||
| // <textarea name="body"></textarea> | ||
| // <input type="submit" value="Submit"> | ||
| // </form> | ||
| // </body> | ||
| // </html> | ||
| // Path: public/styles.css | ||
| // body { | ||
| // font-family: Arial, sans-serif; | ||
| // margin: 0; | ||
| // padding: 0; | ||
| // background-color: #f4f4f4; | ||
| // } | ||
| // h1 { | ||
| // text-align: center | ||
| // Create web server | ||
| app.listen(3000, function() { | ||
| console.log('Server started on http://localhost:3000'); | ||
| }); |