BrainCoding

Tuesday, November 10, 2015

How to add / remove textbox dynamically with jQuery

<html>
<head>
<title>jQuery add / remove textbox example</title>
 
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>

<style type="text/css">
 div{
  padding:8px;
 }
</style>

</head>

<body>

<h1>jQuery add / remove textbox example</h1>

<script type="text/javascript">

$(document).ready(function(){

    var counter = 2;
  
    $("#addButton").click(function () {
    
 if(counter>10){
            alert("Only 10 textboxes allow");
            return false;
 }   
  
 var newTextBoxDiv = $(document.createElement('div'))
      .attr("id", 'TextBoxDiv' + counter);
                
 newTextBoxDiv.after().html('<label>Textbox #'+ counter + ' : </label>' +
       '<input type="text" name="textbox' + counter + 
       '" id="textbox' + counter + '" value="" >');
            
 newTextBoxDiv.appendTo("#TextBoxesGroup");

    
 counter++;
     });

     $("#removeButton").click(function () {
 if(counter==1){
          alert("No more textbox to remove");
          return false;
       }   
        
 counter--;
   
        $("#TextBoxDiv" + counter).remove();
   
     });
  
     $("#getButtonValue").click(function () {
  
 var msg = '';
 for(i=1; i<counter; i++){
      msg += "\n Textbox #" + i + " : " + $('#textbox' + i).val();
 }
       alert(msg);
     });
  });
</script>
</head><body>

<div id='TextBoxesGroup'>
 <div id="TextBoxDiv1">
  <label>Textbox #1 : </label><input type='textbox' id='textbox1' >
 </div>
</div>
<input type='button' value='Add Button' id='addButton'>
<input type='button' value='Remove Button' id='removeButton'>
<input type='button' value='Get TextBox Value' id='getButtonValue'>

</body>
</html>

Thursday, November 5, 2015

How to remove index.php from codeigniter in Raspbian....... 2 different solution!

In application/config/config.php change:

$config['index_page'] = 'index.php';

to:

$config['index_page'] = '';

Step 1 :

Add this in htaccess file

<IfModule mod_rewrite.c>
  RewriteEngine On
  #RewriteBase /

  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteRule ^ index.php [QSA,L]
</IfModule>

Step 2 :

Remove index.php in codeigniter config

$config['base_url'] = ''; 
$config['index_page'] = '';

Step 3 :

Allow overriding htaccess in Apache Configuration (Command)

sudo nano /etc/apache2/apache2.conf

and edit the file & change to

AllowOverride All

for www folder

Step 4 :

Enabled apache mod rewrite (Command)

sudo a2enmod rewrite

Step 5 :

Restart Apache (Command)

sudo /etc/init.d/apache2 restart

-------------------------------------------------------------------------------------------------------

Solution 2:

There are 3 steps to remove index.php

1.Make below changes in application/config.php file

$config['base_url'] = 'http://'.$_SERVER['SERVER_NAME'].'/Your Ci folder_name';
$config['index_page'] = '';
$config['uri_protocol'] = 'AUTO';

2.Make .htacces file in your root directory using below code

RewriteEngine on
RewriteCond $1 !^(index\.php|resources|robots\.txt)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L,QSA]

3.Enable rewrite mode (if your rewrite mode is not enabled)

i. First, initiate it with the following command:

a2enmod rewrite

ii. Edit the file /etc/apache2/sites-enabled/000-default

change All AllowOverride None to AllowOverride All.

iii. Restart your server with the following command:

sudo /etc/init.d/apache2 restart

Monday, October 26, 2015

ADDING THE NETWORK DETAILS TO THE RASPBERRY PI and WiFi from eBay!

sudo wget https://github.com/porjo/mt7601/raw/master/src/mcu/bin/MT7601.bin -O /lib/firmware/mt7601u.bin

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

Go to the bottom of the file and add the following:

network={
    ssid="The_ESSID_from_earlier"
    psk="Your_wifi_password"
}

RaspberryPi perl: warning: Setting locale failed.

Sometime I got so mad when I saw this error. So here is the solution:

Stop forwarding locale from the client. Do not forward the locale environment variable from your local machine to the server. You can comment out the SendEnv LANG LC_* line in the local /etc/ssh/ssh_config file.
Stop accepting locale on the server. Do not accept the locale environment variable from your local machine to the server. You can comment out the AcceptEnv LANG LC_* line in the remote /etc/ssh/sshd_config file.

Friday, October 23, 2015

RaspberryPi image write from linux

It's cool if we can see the progress when we are trying to write Raspbian image to a sd card. Following command will show how to do that:

dd if=2015-05-05-raspbian-wheezy.img | pv | dd of=/dev/sdb

/dev/sdb is your sdCard and be careful when are you choosing this option.

Thursday, October 22, 2015

VirtualBox setup

VirtualBox

This chapter should only be done when installing a local server with VirtualBox

Get latest VirtualBox from https://www.virtualbox.org/wiki/Downloads
Also get the extension pack for the current VirtualBox version and install
Also get the VBoxGuestAdditions ISO for the current VirtualBox version. It should be available at http://download.virtualbox.org/virtualbox/
Create a new machine, 8Gb HDD 4Gb Memory, Linux/Ubuntu 64, dynamically allocated hard disk.
Select the new machine, Settings->Network->Network Settings, set adapter 1 to Bridged Adapter, Allow All

Ubuntu Server

Get the latest 64-bit Ubuntu Server from http://www.ubuntu.com/download/server (Current version is 14.04LTS).
Mount ISO image
If in VirtualBox, just mount ISO and start the virtual machine
If standalone server, burn ISO to CD or to USB stick, set the BIOS to boot from that media and boot
Set it up as a LAMP server
Set up MySQL to use the root password from config/database in the source code.
If a standalone server, copy the source to the server /var/www

Configuring VirtualBox Guest additions

Settings->Storage. Select the CD ROM and remove the current disk from the virtual drive.
Settings->Storage. Select the CD ROM and "insert" the VBoxGuestAdditions ISO image.
In the linux box:

 sudo apt-get install dkms
 sudo mount -r /dev/cdrom /media/cdrom
 sudo bash /media/cdrom/VBoxLinuxAdditions.run



Add to /etc/rc.d before the exit 0 line:

 sudo mount -t vboxsf boenderegistret /var/www


Reboot so it gets properly mounted

RaspberryPi apache2 server; Increase upload size in your php.ini

If you are using Raspbian and try to upload bigger file through phpmyadmin. Below instruction will help you, how to do it:

For this you need to be sudo premission:
-sudo su
-nano /etc/php5/apache2/php.ini
-ctrl+w (for search) : upload_max_filesize --> change to 2000M
-ctrl+w (for search) : post_max_size --> change to 2000M