Comments on: Template View and View Helper Design Patterns in PHP (updated v2) http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/ A periodical blog of experiences from the angle of an autodidactic, paranoid and narcissistic web developer... Thu, 04 Mar 2010 21:21:10 +1100 http://wordpress.org/?v=2.9.2 hourly 1 By: rvdavid http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-1513 rvdavid Wed, 24 Feb 2010 10:41:43 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-1513 Sorry you've had so much trouble using the example code. Firstly, you are getting the error because the memory limit is set to 32M - look for memory_limit in your php.ini file and change it to something like 128M. From reading your comments, it looks like you're making the transition from procedural to OOP. When you become more experienced with OOP, you'll look at the code snippets here and you'll hate it. Use the examples and concepts presented here, to familiarise yourself with OOP (using classes / objects) rather than a recipe to building web apps / sites. In addition, this is a very old post (3 years old!) Since then, a lot of frameworks have matured and are production ready. I highly recommend that you pick one up. I'm using Zend Framework (http://framework.zend.com), have successfully built 3 web applications on it, and I am very happy with the results. Good luck with your project. Sorry you’ve had so much trouble using the example code.

Firstly, you are getting the error because the memory limit is set to 32M – look for memory_limit in your php.ini file and change it to something like 128M.

From reading your comments, it looks like you’re making the transition from procedural to OOP.

When you become more experienced with OOP, you’ll look at the code snippets here and you’ll hate it.

Use the examples and concepts presented here, to familiarise yourself with OOP (using classes / objects) rather than a recipe to building web apps / sites.

In addition, this is a very old post (3 years old!) Since then, a lot of frameworks have matured and are production ready.

I highly recommend that you pick one up.

I’m using Zend Framework (http://framework.zend.com), have successfully built 3 web applications on it, and I am very happy with the results.

Good luck with your project.

]]> By: San http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-1512 San Wed, 24 Feb 2010 07:04:02 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-1512 Hello , I tried to make it work like the following, but I got the error!: Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 33292271 bytes) in C:\xampp\htdocs\view\NewsViewHelper.class.php on line 23 require_once('ViewHelperLocator.class.php'); require_once('View.class.php'); $connection = mysql_connect('localhost', 'root', ''); mysql_select_db('floorplans', $connection); $viewHelperLocator = new ViewHelperLocator($connection); $view = new View($viewHelperLocator, 'template.php'); $view->render(); I'm interested in this code working, I want to create site without any framework, but similar code! :-) San. Hello ,
I tried to make it work like the following, but I got the error!:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 33292271 bytes) in C:\xampp\htdocs\view\NewsViewHelper.class.php on line 23

require_once(‘ViewHelperLocator.class.php’);
require_once(‘View.class.php’);

$connection = mysql_connect(‘localhost’, ‘root’, ”);
mysql_select_db(‘floorplans’, $connection);

$viewHelperLocator = new ViewHelperLocator($connection);
$view = new View($viewHelperLocator, ‘template.php’);
$view->render();

I’m interested in this code working, I want to create site without any framework, but similar code!
:-)
San.

]]> By: San http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-1511 San Wed, 24 Feb 2010 06:57:30 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-1511 class :ViewHelperLocator Function : getHelper($helper) Typos: return $this->cache[$helper]; (underscore is missing for cache) this took my time :-) class :ViewHelperLocator
Function : getHelper($helper)

Typos: return $this->cache[$helper]; (underscore is missing for cache)

this took my time :-)

]]> By: San http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-1510 San Wed, 24 Feb 2010 05:43:16 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-1510 Hi, Could you please include the code to call this View from a page? if you have working code that will be better. Regards, San. Hi,
Could you please include the code to call this View from a page? if you have working code that will be better.
Regards,
San.

]]> By: rvdavid http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-221 rvdavid Tue, 23 Oct 2007 12:10:09 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-221 No problems. If you have any problems you can always contact me through the contact form on this site. Regards, R. Villar David No problems. If you have any problems you can always contact me through the contact form on this site.

Regards,

R. Villar David

]]> By: Frank http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-218 Frank Sat, 13 Oct 2007 20:14:35 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-218 thanks :) now its a little bit clearer, but i have to study other patterns to comprehend it as a whole. ill check registry pattern first, good work thanks :) now its a little bit clearer, but i have to study other patterns to comprehend it as a whole. ill check registry pattern first, good work

]]> By: rvdavid http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-209 rvdavid Tue, 09 Oct 2007 23:23:28 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-209 Hi Frank, No recursion occurs here at all, I think the source of your confusion is that you are thinking that the "getHelper()" method in the Generic View and the "getHelper()" method in the locator are coming from the same object. They most certainly are not. What's happening here is that I have encapsulated the call to $this->_locator->getHelper() with a method within the Generic View, so that I won't have to type in $this->_locator->getHelper() all the time. The "getHelper" method in the view object is merely for convenience. The $locator variable is actually another object called "Service Locator" that handles object creation for you and holds instances of classes made before hand. A Service Locator is just like a registry but knows how to create objects (factory). So if in the example above, I use a Service Locator which knows exactly what a View Helper needs to be instantiated and caches it for later use. I'll update the example above for you to make it a little clearer. Regards, R. Villar David. Hi Frank,

No recursion occurs here at all, I think the source of your confusion is that you are thinking that the “getHelper()” method in the Generic View and the “getHelper()” method in the locator are coming from the same object. They most certainly are not. What’s happening here is that I have encapsulated the call to $this->_locator->getHelper() with a method within the Generic View, so that I won’t have to type in $this->_locator->getHelper() all the time. The “getHelper” method in the view object is merely for convenience.

The $locator variable is actually another object called “Service Locator” that handles object creation for you and holds instances of classes made before hand. A Service Locator is just like a registry but knows how to create objects (factory). So if in the example above, I use a Service Locator which knows exactly what a View Helper needs to be instantiated and caches it for later use.

I’ll update the example above for you to make it a little clearer.

Regards,

R. Villar David.

]]> By: Frank http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-207 Frank Tue, 09 Oct 2007 09:31:10 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-207 doesnt it go recursive, when i call get getHelper on locator and i supposed locator to be the the class viewer itself, what is to be stored in locator variable? which object i call with $this->_locater, the viewer object? and where is template view code stored in? thanks in advance doesnt it go recursive, when i call get getHelper on locator and i supposed locator to be the the class viewer itself, what is to be stored in locator variable? which object i call with $this->_locater, the viewer object? and where is template view code stored in?
thanks in advance

]]> By: rvdavid http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-146 rvdavid Tue, 11 Sep 2007 15:05:10 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-146 Thank you in turn for the feedback. Thank you in turn for the feedback.

]]> By: sopitikoj http://www.rvdavid.net/template-view-and-view-helper-design-patterns-in-php/#comment-145 sopitikoj Sat, 08 Sep 2007 03:16:34 +0000 http://www.rvdavid.net/blog/template-view-and-view-helper-flock-together/#comment-145 Hello At you the excellent site, a lot of useful info and good design, thank. Bye Hello

At you the excellent site, a lot of useful info and good design, thank.

Bye

]]>