Node.js

App 제작 - 모듈의 활용

수업소개

모듈을 활용해서 템플릿 기능을 모듈화 해보겠습니다. 

 

 

 

강의

 

 

 

소스코드

변경사항

template.js

module.exports = {
  HTML:function(title, list, body, control){
    return `
    <!doctype html>
    <html>
    <head>
      <title>WEB1 - ${title}</title>
      <meta charset="utf-8">
    </head>
    <body>
      <h1><a href="/">WEB</a></h1>
      ${list}
      ${control}
      ${body}
    </body>
    </html>
    `;
  },list:function(filelist){
    var list = '<ul>';
    var i = 0;
    while(i < filelist.length){
      list = list + `<li><a href="/?id=${filelist[i]}">${filelist[i]}</a></li>`;
      i = i + 1;
    }
    list = list+'</ul>';
    return list;
  }
}

 

main.js

var http = require('http');
var fs = require('fs');
var url = require('url');
var qs = require('querystring');
var template = require('./lib/template.js');

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){
        fs.readdir('./data', function(error, filelist){
          var title = 'Welcome';
          var description = 'Hello, Node.js';
          var list = template.list(filelist);
          var html = template.HTML(title, list,
            `<h2>${title}</h2>${description}`,
            `<a href="/create">create</a>`
          );
          response.writeHead(200);
          response.end(html);
        });
      } else {
        fs.readdir('./data', function(error, filelist){
          fs.readFile(`data/${queryData.id}`, 'utf8', function(err, description){
            var title = queryData.id;
            var list = template.list(filelist);
            var html = template.HTML(title, list,
              `<h2>${title}</h2>${description}`,
              ` <a href="/create">create</a>
                <a href="/update?id=${title}">update</a>
                <form action="delete_process" method="post">
                  <input type="hidden" name="id" value="${title}">
                  <input type="submit" value="delete">
                </form>`
            );
            response.writeHead(200);
            response.end(html);
          });
        });
      }
    } else if(pathname === '/create'){
      fs.readdir('./data', function(error, filelist){
        var title = 'WEB - create';
        var list = template.list(filelist);
        var html = template.HTML(title, list, `
          <form action="/create_process" method="post">
            <p><input type="text" name="title" placeholder="title"></p>
            <p>
              <textarea name="description" placeholder="description"></textarea>
            </p>
            <p>
              <input type="submit">
            </p>
          </form>
        `, '');
        response.writeHead(200);
        response.end(html);
      });
    } else if(pathname === '/create_process'){
      var body = '';
      request.on('data', function(data){
          body = body + data;
      });
      request.on('end', function(){
          var post = qs.parse(body);
          var title = post.title;
          var description = post.description;
          fs.writeFile(`data/${title}`, description, 'utf8', function(err){
            response.writeHead(302, {Location: `/?id=${title}`});
            response.end();
          })
      });
    } else if(pathname === '/update'){
      fs.readdir('./data', function(error, filelist){
        fs.readFile(`data/${queryData.id}`, 'utf8', function(err, description){
          var title = queryData.id;
          var list = template.list(filelist);
          var html = template.HTML(title, list,
            `
            <form action="/update_process" method="post">
              <input type="hidden" name="id" value="${title}">
              <p><input type="text" name="title" placeholder="title" value="${title}"></p>
              <p>
                <textarea name="description" placeholder="description">${description}</textarea>
              </p>
              <p>
                <input type="submit">
              </p>
            </form>
            `,
            `<a href="/create">create</a> <a href="/update?id=${title}">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);
          var id = post.id;
          var title = post.title;
          var description = post.description;
          fs.rename(`data/${id}`, `data/${title}`, function(error){
            fs.writeFile(`data/${title}`, description, 'utf8', function(err){
              response.writeHead(302, {Location: `/?id=${title}`});
              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);
          var id = post.id;
          fs.unlink(`data/${id}`, function(error){
            response.writeHead(302, {Location: `/`});
            response.end();
          })
      });
    } else {
      response.writeHead(404);
      response.end('Not found');
    }
});
app.listen(3000);

 

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  1. Gimme_Gsuit
    너무 감사합니다. 거의다 끝나가네요. 화팅들 입니다.
  2. moon
    감사합니다.
  3. Seo Yun Seok Tudoistube
    node.js 는 많이 쓸텐데 왜 많이 안볼까 생각해보면, 공부할 여유마저 힘들어서 많이 못보는걸까 걱정됩니다.
    우리나라 시장이 점점 갈라파고스처럼 쓰던 기술을 쓰는데 머무를까 걱정입니다.
    감사합니다!
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