Node.js mysql display table on html site

Question

I'm new to node.js and try to display a simple table on a html site. This table should be filled with the data from a mysql select (eg: select * from testtable).

But I really don't get it how to do it. For someone with PHP background how can I display some sql content in a HTML in nodejs? I know the git mysql nodejs wiki but it didn't help at all since this is only about getting the data and not displaying it on a webpage.

What is the best practice to do something like that in nodeJS? Is there an easy understandable way, or should I stay with PHP? I really like the idea about node.js but the start is like climbing a slippery cliff.

I also buyed a book about it, but the book never gets deep into express (because this would be too much information..). So I know about express, pug, serve-static and I was able to serve a simple html. But that's it, no CRUD or REST and I payed 50€ for nothing.

EDIT: Do I need to use an API or is maybe using Angular.js the correct way for this?

EDIT2:

C:\Users\user\node_test\CRUD2>node app.js
module.js:327
throw err;
^

Error: Cannot find module './routes'

at Function.Module._resolveFilename (module.js:325:15)

at Function.Module._load (module.js:276:25)

at Module.require (module.js:353:17)

at require (internal/module.js:12:17)

at Object.<anonymous> (C:\Users\user\node_test\CRUD2\app.js:2:14)
at Module._compile (module.js:409:26)

at Object.Module._extensions..js (module.js:416:10)

at Module.load (module.js:343:32)

at Function.Module._load (module.js:300:12)

at Function.Module.runMain (module.js:441:10)

EDIT3:

C:\Users\user\node_test\CRUD2>node app.js
Express server listening on port 4300
C:\Users\user\node_test\CRUD2\routes\testtable.js:4
var query = connection.query('SELECT * FROM testtable',function(err,rows){
                    ^

TypeError: Cannot read property 'query' of undefined
at C:\Users\user\node_test\CRUD2\routes\testtable.js:4:29
at C:\Users\user\node_test\CRUD2\node_modules\express-myconnection\lib\express-myconnection.js:87:41
at Pool.<anonymous> (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\Pool.js:47:16)
at Handshake.Sequence.end (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\protocol\sequences\Sequence.js:78:24)
at Handshake.ErrorPacket (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\protocol\sequences\Handshake.js:101:8)
at Protocol._parsePacket (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\protocol\Protocol.js:205:24)
at Parser.write (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\protocol\Parser.js:62:12)
at Protocol.write (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\protocol\Protocol.js:37:16)
at Socket.<anonymous> (C:\Users\user\node_test\CRUD2\node_modules\mysql\lib\Connection.js:73:28)
at emitOne (events.js:77:13)

Alessandro · Accepted Answer · 2016-06-24 09:11:09Z

8

here an example:

app.js

var express = require('express');
var routes = require('./routes');
var http = require('http');
var path = require('path');

//Including controller/dao for testtable
var testtable = require('./routes/testtable'); 
var app = express();
var connection  = require('express-myconnection'); 
var mysql = require('mysql');
// all environments
app.set('port', process.env.PORT || 4300);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(express.logger('dev'));
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
app.use(express.static(path.join(__dirname, 'public')));
// development only
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

app.use(
    connection(mysql,{

        host: 'localhost',
        user: 'your_user',
        password : 'your_password',
        port : 3306, //port mysql
        database:'dbname'
},'pool')
);
app.get('/testtable', testtable.list);
app.use(app.router);
http.createServer(app).listen(app.get('port'), function(){
    console.log('Express server listening on port ' + app.get('port'));
});

routes/testtable.js

exports.list = function(req, res){

  req.getConnection(function(err,connection){   
      var query = connection.query('SELECT * FROM testtable',function(err,rows){
        if(err)
          console.log("Error Selecting : %s ",err );

        res.render('testtable',{page_title:"Test Table",data:rows});
      });
  });
};

views/testtable.ejs

<html><body>
<table border="1" cellpadding="7" cellspacing="7">
  <tr>
    <th width="50px">No</th>
    <th>Field 1</th>
    <th>Field 2</th>
    <th>Field 3</th>
  </tr>
  <% if(data.length){ 
    for(var i = 0;i < data.length;i++) { %>
  <tr>
    <td><%=(i+1)%></td>
    <td><%=data[i].field1%></td>
    <td><%=data[i].field2%></td>
    <td><%=data[i].field3%></td>
  </tr>
  <% }
  }else{ %>
  <tr>
    <td colspan="3">No user</td>
  </tr>
<% } %>
</table>
</body></html>

To run this "project" you have to install some node modules, you could create a file called "package.json" in your root directory:

{
  "name": "application-name",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node app.js"
  },
  "dependencies": {
    "ejs": "^1.0.0",
    "express": "3.5.1",
    "express-myconnection": "1.0.4",
    "jade": "*",
    "mysql": "2.2.0"
  }
}

and call "npm install" under your project root.

I hope it helps you.

edited Jun 24, 2016 at 9:11

answered Jun 24, 2016 at 8:31

Alessandro

4,4729 gold badges43 silver badges71 bronze badges

Sign up to request clarification or add additional context in comments.

16 Comments

user3772108 Over a year ago

This is really great! But something goes wrong when I try to start the app.js Error: Cannot find module './routes' It is comming from module.js:327. I changed the require in the app.js for the route to this var routes = require('./routes/testtable'); but now I get throw new Error('Most middleware (like ' + name + ') is no longer bundled with Express?

user3772108 Over a year ago

Tried to solve the problem by installing npm install --save logger but it doesn't solved the issue.

user3772108 Over a year ago

It seems like logger is now morgan and json is now also not included in express anymore. So thank you for your example and time I will try to create my app on this one.

Alessandro Over a year ago

Route to testable it's already defined at line "var testtable = require('./routes/testtable');". I added in the example above some tips to "install" and run the project.

Alessandro Over a year ago

try to run example under "/node_modules/express-myconnection/examples/single" you need to set env variables using SET for Windows or EXPORT for LINUX. And set **DB_HOST**='localhost' **DB_USER**='user' **DB_PASSWORD**='pwd' and **DB_DATABASE**='yourdb', now call in your browser localhost:3000 does it work?

|

Collectives™ on Stack Overflow

Node.js mysql display table on html site

1 Answer 1

16 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

16 Comments

Your Answer

Sign up or log in

Post as a guest

Related