Chapter 4

Akira71 · April 3rd, 2011, 09:47 AM

I noticed when I was working through the examples, including the downloaded examples, there were errors. In case anyone is is having problem with the CakePHP code, let me suggest the fixes below:

On page 110 in the book, makes sure line 2 of the edit code looks like this:

Code:

echo $form->create('Address', array('action' => 'edit'));

Note the use of => instead of the books -> . This will fix one issue. The downloaded code had this correct.

The other problem is the way links are built for editing, viewing and deleting. If you follow the book and downloaded code you will always have a null $id. Instead use the following format for building links:

Code:

link($address['first_name'], 
		array('action'=>'view', $address['id']))

It's important to note that I removed the

Code:

'id'=>$address['id']

instead opting for the straight $address['id']. The reason? Your links will be correct. The incorrect format makes the link parameters look like this

Code:

http://localhost/cake/addresses/edit/id:1

instead of the correct

Code:

http://localhost/cake/addresses/edit/1

. If you follow the book chapter four, the ID will always be null because of this. Make the suggested correction above and you can view, edit and delete no problem.

I hope this helps someone out. Took me 30 minutes to figure this out, since I am still learning CakePHP.

BartoszPorebski · April 6th, 2011, 03:55 AM

Following code is obviously wrong:

Code:

echo $form->create('Address', array('action' -> 'edit'));

It is a simple printing mistake in the book's code listing, for which we are truly sorry, but our downloadable source code is correct. The correct code for this one is, as you noticed:

Code:

echo $form->create('Address', array('action' => 'edit'));

The other problem is of somewhat different nature, and we are afraid You may have some other issues related to this one, because the examples in our book are based on Cake 1.2.

Here are two examples from the CakePHP documentation:

The first one is for CakePHP version 1.2 (the stable release while we were writing this book) :

Code:

<?php echo $html->link( $post['Post']['title'], array( 'action'=>'view', 'id'=>$post['Post']['id'] ) ); ?>

The second one is for CakePHP version 1.3:

Code:

<?php echo $this->Html->link( $post['Post']['title'], array( 'action' => 'view', $post['Post']['id'] ) ); ?>

As You can see, your solution uses CakePHP v.1.3 syntax.

Code:

link($address['first_name'],  array('action'=>'view', $address['id']))

We thank You for Your contribution :)

Akira71 · April 6th, 2011, 07:20 AM

Thank you for clearing that up BartoszPorebski. I now see why there was a difference and what was causing the confusion.

I had just picked up the book, great idea on the book by the way showing how several different frameworks implement the same thing, and was working through it this past weekend. Of course I downloaded the latest stable release of CakePHP and did not even think about version differences. Now I know to check for the differences. I am still learning and these tips all help me out.

Again, thank you for writing a good book and helping newbies in PHP such as myself gain a deeper understanding.

BartoszPorebski · April 6th, 2011, 07:40 AM

I'm glad you like our book, and thank you for buying it in the first place.

We've put much effort to make it as good as possible, but some mistakes are unavoidable. We count on good reviews, so if you find any other bugs we'll do our best to patch them up.

The issue with versions is even worse - you write something one day, and the next day it's obsolete. We had such problem with Google Web Search API. Karol wrote a chapter about it in October 2010 and I reviewed it a few days later in November only to find it became deprecated in the meantime. So we had to rewrite that part ;)

Good luck and have fun!