수업소개
Node.js 웹앱에서 데이터베이스의 설정정보를 별도의 파일로 분리하는 방법에 대해서 소개해드립니다.
강의
소스코드
main.js
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | var http = require('http');var url = require('url');var qs = require('querystring');var template = require('./lib/template.js');var db = require('./lib/db');var app = http.createServer(function(request,response){ var _url = request.url; var queryData = url.parse(_url, true).query; var pathname = url.parse(_url, true).pathname; if(pathname === '/'){ if(queryData.id === undefined){ db.query(`SELECT * FROM topic`, function(error,topics){ var title = 'Welcome'; var description = 'Hello, Node.js'; var list = template.list(topics); var html = template.HTML(title, list, `<h2>${title}</h2>${description}`, `<a href="/create">create</a>` ); response.writeHead(200); response.end(html); }); } else { db.query(`SELECT * FROM topic`, function(error,topics){ if(error){ throw error; } db.query(`SELECT * FROM topic LEFT JOIN author ON topic.author_id=author.id WHERE topic.id=?`,[queryData.id], function(error2, topic){ if(error2){ throw error2; } console.log(topic); var title = topic[0].title; var description = topic[0].description; var list = template.list(topics); var html = template.HTML(title, list, ` <h2>${title}</h2> ${description} <p>by ${topic[0].name}</p> `, ` <a href="/create">create</a> <a href="/update?id=${queryData.id}">update</a> <form action="delete_process" method="post"> <input type="hidden" name="id" value="${queryData.id}"> <input type="submit" value="delete"> </form>` ); response.writeHead(200); response.end(html); }) }); } } else if(pathname === '/create'){ db.query(`SELECT * FROM topic`, function(error,topics){ db.query('SELECT * FROM author', function(error2, authors){ var title = 'Create'; var list = template.list(topics); var html = template.HTML(title, list, ` <form action="/create_process" method="post"> <p><input type="text" name="title" placeholder="title"></p> <p> <textarea name="description" placeholder="description"></textarea> </p> <p> ${template.authorSelect(authors)} </p> <p> <input type="submit"> </p> </form> `, `<a href="/create">create</a>` ); response.writeHead(200); response.end(html); }); }); } else if(pathname === '/create_process'){ var body = ''; request.on('data', function(data){ body = body + data; }); request.on('end', function(){ var post = qs.parse(body); db.query(` INSERT INTO topic (title, description, created, author_id) VALUES(?, ?, NOW(), ?)`, [post.title, post.description, post.author], function(error, result){ if(error){ throw error; } response.writeHead(302, {Location: `/?id=${result.insertId}`}); response.end(); } ) }); } else if(pathname === '/update'){ db.query('SELECT * FROM topic', function(error, topics){ if(error){ throw error; } db.query(`SELECT * FROM topic WHERE id=?`,[queryData.id], function(error2, topic){ if(error2){ throw error2; } db.query('SELECT * FROM author', function(error2, authors){ var list = template.list(topics); var html = template.HTML(topic[0].title, list, ` <form action="/update_process" method="post"> <input type="hidden" name="id" value="${topic[0].id}"> <p><input type="text" name="title" placeholder="title" value="${topic[0].title}"></p> <p> <textarea name="description" placeholder="description">${topic[0].description}</textarea> </p> <p> ${template.authorSelect(authors, topic[0].author_id)} </p> <p> <input type="submit"> </p> </form> `, `<a href="/create">create</a> <a href="/update?id=${topic[0].id}">update</a>` ); response.writeHead(200); response.end(html); }); }); }); } else if(pathname === '/update_process'){ var body = ''; request.on('data', function(data){ body = body + data; }); request.on('end', function(){ var post = qs.parse(body); db.query('UPDATE topic SET title=?, description=?, author_id=? WHERE id=?', [post.title, post.description, post.author, post.id], function(error, result){ response.writeHead(302, {Location: `/?id=${post.id}`}); response.end(); }) }); } else if(pathname === '/delete_process'){ var body = ''; request.on('data', function(data){ body = body + data; }); request.on('end', function(){ var post = qs.parse(body); db.query('DELETE FROM topic WHERE id = ?', [post.id], function(error, result){ if(error){ throw error; } response.writeHead(302, {Location: `/`}); response.end(); }); }); } else { response.writeHead(404); response.end('Not found'); }});app.listen(3000); |
lib/db.js
실제 데이터베이스 정보가 저장된 파일 (버전관리하면 안됨)
1 2 3 4 5 6 7 8 9 | var mysql = require('mysql');var db = mysql.createConnection({ host:'localhost', user:'root', password:'111111', database:'opentutorials'});db.connect();module.exports = db; |
lib/db.template.js
데이터베이스 정보에 대한 샘플 파일. (버전관리함)
1 2 3 4 5 6 7 8 9 | var mysql = require('mysql');var db = mysql.createConnection({ host:'', user:'', password:'', database:''});db.connect();module.exports = db; |
.gitignore
lib/db.js 파일을 버전관리에서 제외 (git)
1 | lib/db.js |
