So i check to mysql manual and found interesting sintak, beside use AFTER column syntax, there is FIRST syntax. So the query is look like this

ALTER TABLE table_name ADD COLUMN `ID` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT First,
ADD PRIMARY KEY (`ID`);

I hope this article can help you to add first column on existing table mysql database server.

This code will not save the data field into current date time on mysql.

$this->ModelName->saveField('date_field', 'NOW()');

or

$data['ModelName']['id'] = 1;
$data['ModelName']['date_field'] = 'NOW()';
$this->ModelName->save($data);

It will not work as you want. Because cakephp will ada quote on the value.

So the solution is by using DboSource class. Here are the code look like to save table column with current data time on mysql.

$this->ModelName->saveField('date_field', DboSource::expression('NOW()'));

or

$data['ModelName']['id'] = 1;
$data['ModelName']['date_field'] = DboSource::expression('NOW()');
$this->ModelName->save($data);

I hope this article help you for saving mysql function now, curdate, etc on cakephp model object.

I am using windows Vista, here are my step to solve debug certificate expired android problem :

1. Delete debug.keystore on C:\Users\{USER_PROFILE}\.android folder. For others operating system, you could check the path on eclipse. Please open menu Preferences – Android – Build – Default debug keystore.
2. On eclipse, Clean the projects ( Menu Projects > Clean ). You probably need to restart your eclipse.

I figure out this problem are because the certificate is expired. I wondering if this debug keystore is same as keystore that i create when i installing the Android SDK. I don’t know, but eclipse can generate it. It seem the certificate is expired in 365 days. I hope this article can help to solve this problem.

<?php echo $form->create('Evoucher', array('url' => array('controller' => 'gift_vouchers', 'action' => 'buy', $giftVoucher['GiftVoucher']['amount'])));?>

It is generated a form tag with strange id added on action url. Something like this

<form id="EvoucherBuyForm" method="post" action="/gift_vouchers/buy/2/20" accept-charset="utf-8">

After exploration, i found the problem was on the controller action for buy. I have set id for the data variable

$this->data['Evoucher']['id'] = 2;

So after taking out this line, i change it into

$this->Evoucher->id = 2;

And cakephp can generate correct action url for the form tag

<form id="EvoucherBuyForm" method="post" action="/gift_vouchers/buy/20" accept-charset="utf-8">

I hope this tutorial help you. Thanks for visiting our blog

So after research on cakephp tutorial, which come to setting cakephp on shared hosting and i think this solution also good for production phase. I will mention how i set my cakephp on hostgator

1. move app, cake, plugins, vendors folder into your hosting root folder. It is user root folder on your hosting
2. delete .htaccess and index.php on cakephp root folder
3. move /app/webroot/*.* to /public_html folder
4. delete empty /app/webroot folder
5. edit /public_html/index.php to point to the ‘cake’ and ‘app’ directories. For example my public_html path for my domain is /home/myhost/public_html, so i point
   - ROOT to look at /home/myhost
   - APP_DIR to look at /home/myhost/app
   - CAKE_CORE_INCLUDE_PATH to look at /home/myhost/cake
6. edit this line on /public_html/index.php with your appropriate path
   if (!defined('ROOT')) {
define('ROOT', DS.'home'.DS.'myhost');
}

   if (!defined('APP_DIR')) {
define('APP_DIR', 'app');
}

   if (!defined('CAKE_CORE_INCLUDE_PATH')) {
define('CAKE_CORE_INCLUDE_PATH', DS.'home'.DS.'myhost');
}

7. The only .htaccess i have on /home/myhost/public_html, the setting for .htaccess look like this
   <IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?url=$1 [QSA,L]
</IfModule>

<meta name="generator" content="WordPress <?php bloginfo('version'); ?>" />

WordPress 2.5 and above, the version is moved into the core of the wordpress. So it will automatically generate metatag generate, such as

<meta name="generator" content="WordPress 3.0" />

If you want to remove this generated line, there are some ways :

1. Login to administration wordpress page, and then go to Appearance > Themes, And then Editor. Open functions.php, Add this line before the closing ?> tag
   remove_action('wp_head', 'wp_generator');
2. Or use this plugin. Install on plugins area.

$this->redirect('controller/action');
exit();

However cakephp 1.2 give you default exit after redirect. The complete sintax for redirect on cakephp 1.2 is

$this->redirect('controller/action', null, true);

which the third parameter define exit = true, means terminate the script. second parameter is for setting exit status, for example 404, etc. Defaultly you only need to write

$this->redirect('controller/action');

Controller::referer()

Referer url is the last page or url that accessed by the user before open current page or url.

Log function that can be accessed through your controller easily. You can save or add new log into error log or debug log, or you can make new log file. All file will be placed inside CAKEPHP_FOLDER/app/tmp/logs folder

default sintax that added to CAKEPHP_FOLDER/app/tmp/logs/error.log

$this->log("error message log");

log for debugging that added to CAKEPHP_FOLDER/app/tmp/logs/debug.log

$this->log('debug message log', LOG_DEBUG);

log to specific filename

$this->log('daily log', 'daily');

One of log purpose is to track user access on our website. Here is a sample of user access log or tracking user access using cakephp :

$this->log($this->RequestHandler->getClientIP() ."\t". $this->params['url']['url'] ."\t". Controller::referer(), 'access_log'. date('dmY'));

One thing you need to remember is that the log function add the datetime automatically for new log.

So this is how we can track user access or create log for catch the error message or for debuging in cakephp. I hope this article help you.

The popular captcha is recaptcha from captcha.net website. It is free for use. Their interface or design also really nice to put on your website. You can check their sample in http://www.captcha.net/. They support both image captcha and audio chaptca.

Since i work with cakephp framework, i need to integrate this captcha into my application. I would like to share my captcha component for you. It is a simple code and easy to integrate. Here are the step

1. Download the library here and you can read their document for the manual in this page.
2. Extract recaptcha-php-1.11.zip ( or latest version ) into yourcakephpfolder/app/vendors/recaptcha-php. So the recaptchalib.php will have path on yourcakephpfolder/app/vendors/recaptcha-php/recaptchalib.php
3. Get public key and private key for your domain here. You will need an google account for login
4. And then create new component CaptchaComponent on your cakephp. This is the code for file yourcakephpfolder/app/controllers/components/captcha.php
   <?php
App::import('Vendor', 'recaptcha-php', array('file'=>'recaptcha-php'.DS.'recaptchalib.php'));

   class CaptchaComponent extends Object {
var $controller;
var $public_key = 'your_recaptcha_public_key';
var $private_key = 'your_recaptcha_private_key';

   function startup( &$controller ) {
$this->controller = &$controller;
}

   function create_image_captcha() {
return recaptcha_get_html($this->public_key);
}

   function check_captcha() {
$resp = recaptcha_check_answer($this->private_key, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]);
return $resp->is_valid;
}
}
?>

5. Include CaptchaComponent in any controllers that you want to add a captcha
   var $components = array('Captcha');
6. And then inside the action function, create new captcha
   $this->set('captcha_code', $this->Captcha->create_image_captcha());
7. You can use $captcha_code inside your view, place and echo this variable on appropriate place inside the form.
8. To check user captcha input, you can check using this $this->Captcha->check_captcha(), it will return true if user input correct captcha, and false if incorrect captcha

That is a simple Captcha component for cakephp using popular captcha.net. I hope this help you againts spammer on your website. If you get any difficulty of using this component, just write a comment below, i will try to answer your question and fix the problems.

My Demo for Captcha Component