Open Tech Notes

Backup system for small network

admin — Wed, 23 May 2007 06:42:31 +0000

From my last post, I got an idea about center backup system for a small network. There are a lot small companies in town. The typical network is about around 10 computers runing Windows OS and all of them share one internet connection via a small switch and a router. They usually use CD/DVD-R/RW to backup their data. The problem is, at very beginning , everybody likes to do it, after a couple of weeks, most of them feel it boring and useless. After a couple of monthes, I can say, nobody likes it.

When I used the WinSCP since my last post. I am thinking of seting up a linux server with SSH server. In each Windows client, setup WinSCP. The linux server can be setup anywhere, even in the boss’s home as long as the Internet connection is stable. Not like Samba, scp is pretty easy to use and the WinSCP is powerful.

Zend_Validate is released

admin — Thu, 08 Feb 2007 09:03:24 +0000

Go to here to download

To avoiding unexpected input one my demo, I will add the Zend_Validate to it soon.

Zend Framework(0.7.0) could not recognize index.php

admin — Wed, 31 Jan 2007 21:12:37 +0000

Thanks for Tony for your comment!

My patch for version 0.7.0

In library\Zend\Controller\Request\Http.php
After line 531, add

Code (php)
// Remove the .php from REQUEST_URI
if ($pos = strpos($requestUri, ‘.’)) {
$requestUri = substr($requestUri, 0, $pos);
}
 

or you can go to framework.zend.com/issues/browse/ZF-835 to see how Zend Framework team solves this problem

admin — Wed, 31 Jan 2007 21:11:05 +0000

Zend Framework 0.7.0 has been released.

admin — Fri, 19 Jan 2007 08:09:59 +0000

I have done the test, my demo works with the new version without any problem.

By the way, I’d like introduce my thought about controller. A couple of weeks ago, I separated form operations from the action controller. a couple of reasons as below:

A lot of actions do the similar thing, like add, register, something behind the scene is inserting one record into the table of database. Using one form action to do the similar job, formInsert() for example, will make this part of code re-usable.
Making action controller programming as easy as possibe. As we can predict, Zend_form, Zend_Validate etc will come soon, I will put all of them into form action controller. In action controller there will only two statements like these:

Code (php)
    function addAction()
    {
       $params = array (…);
       $this->_forward(‘form’,‘formactionname’,$params);  
    }               
 

then in the future, in action controllers, I only need to construct one big arrary which will carry parameters for creating the form, then call the related form action. That’s it!

admin — Fri, 19 Jan 2007 08:09:47 +0000

Form Input Validation

admin — Mon, 08 Jan 2007 05:48:43 +0000

It is a big job to write the effective validation rule for form input, isn’t?

Unsupported operand types when call _getAllParams()

admin — Sun, 31 Dec 2006 22:40:50 +0000

I think it is a bug, however, it seems that I can’t login into Zend Framework Wiki today. Anyway, here is what I have found.

When I call _getAllParams() in FormController, like

Code (php)
$this->_getAllParams();

I got the error message as "unsupported operand types".

Finally, I found the problem in Zend\Controller\Request\Http.php line 601

Code (php)
  590   /**
  591    * Retrieve an array of parameters
  592   *
  593    * Retrieves a merged array of parameters, with precedence of userland 
  594    * params (see {@link setParam()}), $_GET, $POST (i.e., values in the 
  595    * userland params will take precedence over all others).
  596    * 
  597    * @return array
  598    */
  599    public function getParams() 
  600    { 
  601            return $this->_params + $_GET + $_POST; 
  602    } 
 

The reason is because $_GET and/or $_POST was NULL when getParams() was called.

Temporarily , I changed it as below:

Code (php)
public function getParams() 
{
 
          if ( null !== $_GET && null !== $_POST) {
                 return $this->_params + $_GET + $_POST; 
          } elseif ( null !== $_GET && null == $_POST) {
                return $this->_params + $_GET; 
          } elseif ( null == $_GET && null !== $_POST) {
                return $this->_params + $_POST;
          } 
                return $this->_params;
}

Refactor-Step One

admin — Sun, 31 Dec 2006 10:14:32 +0000

By now, my first step of refactor for addAction(), editAction() etc. has been finished. They are all related FORM operation. First of all, I created a form controller which named FormController. Of course, the file name is FormController.php and the class name is FormController().

It looks like

Code (php)
 
class FormController extends Zend_Controller_Action 
 
{
   function init()
   {
    Zend::loadClass(‘Bookmark’);
    Zend::loadClass(‘User’);
   }
   public function insertAction()
   {
 
          $arg1  = $this->_request->getParam(‘arg1_name’, 0);
          $args  = $this->_request->getParams();
          …
   }
}
 

in IndexController.php, the code would be

Code (php)
function addAction()
{              
   $data = array
   (    
        ‘arg1_name’   => ‘arg1′,
        ‘arg2_name’   => ‘arg2′,
        ‘arg3_name’   => ‘arg3′
   );
        
   $this->_forward(‘form’,‘insert’,$data);
}

Zend Framework could not recognize index.php

admin — Fri, 22 Dec 2006 17:40:31 +0000

In RewriteRouter.php, after line 136 add

/** Added by Jason Qi Nov 28, 2006 */
        $tpath = $path;
        $tpath = strtolower($tpath);
        if (strstr($tpath, ‘.php’)) {
            $path = substr($path, 0, strpos($path, ‘.’));
        }

to eliminate .php from index.php