first post

Nodejs-Socketio-Mysql-Demo/db_helper.js

@@ -0,0 +1,51 @@
+var mysql = require('mysql');
+var MYSQL_USERNAME = 'root';
+var MYSQL_PASSWORD = 'condoms';
+
+// init;
+var client = mysql.createClient({
+  user: MYSQL_USERNAME,
+  password: MYSQL_PASSWORD,
+});
+
+// destroy old db
+//client.query('DROP DATABASE IF EXISTS mynode_db', function(err) {
+//  if (err) { throw err; }
+//});
+
+// create database
+//client.query('CREATE DATABASE mynode_db', function(err) {
+//  if (err) { throw err; }
+//});
+//console.log('database mynode_db is created.');
+client.query('USE mynode_db');
+
+// create table
+var sql = ""+
+"create table employees("+
+" id int unsigned not null auto_increment,"+
+" name varchar(50) not null default 'unknown',"+
+" salary dec(10,2) not null default 100000.00,"+
+" primary key (id)"+
+");";
+//client.query(sql, function(err) {
+//  if (err) { throw err; }
+//});
+//console.log('table employees is created.');
+
+// function to create employee
+exports.add_employee = function(data, callback) {
+ client.query("insert into employees (name, salary) values (?,?)", [data.name, data.salary], function(err, info) {
+    // callback function returns last insert id
+    callback(info.insertId);
+    console.log('Employee '+data.name+' has salary '+data.salary); 
+  });
+}
+
+// function to get list of employees
+exports.get_employees = function(callback) {
+  client.query("select * from employees", function(err, results, fields) {
+    // callback function returns employees array
+    callback(results);
+  });
+}