Web Development & Stuff » PHP

Easy way to render table calendar days HTML with PHP

admin — Tue, 28 Feb 2012 12:50:43 +0000

If you have an array that represents the days in a month, ready to populate a HTML table, something like this:

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Array

(

    [0] =>   

    [1] =>   

    [2] => 1

    [3] => 2

    [4] => 3

    [5] => 4 

    [6] => 5 

    [7] => 6 

    [8] => 7

    [9] => 8 

    [10] => 9 

    [11] => 10 

    [12] => 11 

    [13] => 12 

    [14] => 13 

    [15] => 14 

    [16] => 15 

    [17] => 16

    [18] => 17 

    [19] => 18 

    [20] => 19 

    [21] => 20 

    [22] => 21 

    [23] => 22 

    [24] => 23 

    [25] => 24 

    [26] => 25 

    [27] => 26 

    [28] => 27 

    [29] => 28 

    [30] => 29 

    [31] =>   

    [32] =>   

    [33] =>   

    [34] =>   

)

This is a nice way IMO to render (in a view/template) the days markup inside the tbody tag:

foreach($rows[0] as $k1 => $day ): ?>

foreach($rows as $k2 => $r): ?>

endforeach ?>

endforeach ?>

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17	$daysInWeek = 7 ?> foreach($days as $key => $day): ?> $rows[$key % $daysInWeek][] = !empty($day) ? $day : ' ' ?> endforeach ?>
$rows[$k2][$k1 % $daysInWeek] ?>

CakePHP 1.3 Custom validation rule error – preg_match() Delimiter must not be alphanumeric or backslash

admin — Thu, 22 Dec 2011 15:35:11 +0000

If you get this error:

1	Warning: Warning (2): preg_match() [<a href='function.preg-match'>function.preg-matcha>]: Delimiter must not be alphanumeric or backslash in [/var/www/vhosts/h2oservices.com/httpdocs/cake/libs/model/model.php, line 2611]

When trying to use a custom validation rule, make sure the method visibility is set to public.

So this should work:

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public function myCustomValidateRule(){

    // Custom validation code

}

It seems protected visibility works on some versions of PHP (5.2.11 tested and working) and not others.

Ternary in PHP Heredoc

admin — Thu, 15 Dec 2011 15:26:57 +0000

It can’t be done using the normal Ternary operator but you can emulate it with:

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// So instead of:

$str = <<
{$a ? 1 : 2}

HTML;

// You can do:

$values = array('1', '2');

$str = <<
{$values[$a]}

HTML;

Virtual/non existent model fields using CakePHP Security Component

admin — Thu, 13 Oct 2011 08:07:12 +0000

If you have fields that don’t exist in your table schema and you want to submit those to an action that is protected by the Security component. You can tell the component to ignore (and therefore not black hole/404 your request) the field(s) using its $disabledFields attribute.

In this example I’m ignoring the security_code (captcha) field, which obviously I don’t store anywhere in the database table:

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$this->Security->disabledFields = array(

  'Enquiry.security_code'

);

Saving CakePHP HABTM models with join table data

admin — Mon, 25 Oct 2010 18:16:13 +0000

You can save has and belongs to many models in CakePHP (v1.3.4) whilst adding additional data to the join table, in a single operation.

In this example I’m saving Users that HABTM Videos. The users_videos join table has an order column.

Firstly add the ‘with’ parameter to the join, you can add the ‘order’ parameter too if it makes sense in your context:

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class User extends AppModel {

  public $hasAndBelongsToMany = array(

    'Video' => array(

      'with' => 'UsersVideo',

      'order' => 'UsersVideo.order'

    )

  );

}

Make sure you do a $model->saveAll() in the controller:

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if($this->User->saveAll($this->data)){

  // Success message

  // Redirect     

} else {

  // Error message

}

The trick is in the naming of the form input elements. The format is Video.X.UsersVideo.field_name.

Here’s an example:

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 $form->input('Video.id') ?>

 $form->input('Video.0.UsersVideo.video_id', array(

  'type' => 'select',

  'options' => $videos

)) ?>

 $form->input('Video.0.UsersVideo.order', array(

  'type' => 'select',

  'options' => range(1, count($videos))

)) ?>

 $form->input('Video.0.UsersVideo.user_id', array(

  'type' => 'hidden',

  'value' => $user['User']['id']

)) ?>

Which outputs:

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[User] => Array

        (

            [id] => 3

        )

[Video] => Array

        (

            [0] => Array

                (

                    [UsersVideo] => Array

                        (

                            [video_id] => 9

                            [order] => 2

                            [user_id] => 3

                        )

                )

        )

This will add a record to the join table with the order value.

Obviously you can expand on this to save more users_videos records during the same saveAll call.

Insert CakePHP ACO nodes using CakeDC migrations plugin

admin — Tue, 12 Oct 2010 11:24:50 +0000

I’m in the situation where most of my CMS components are extensible CakePHP plugs.

I’ve just started to use the CakeDC migrations plugin (been meaning to for a long time as I always loved Rails migrations).

I had previously automated the insertion of plugin ACO node records using a Bash script that chugged through a stack of ‘cake acl create aco bla/bla bla’ commands.

After playing with the migration callbacks for a while I figured out how to insert ACO nodes. The killer part of this process is remembering to attach the Tree behavior to the ACL model. Otherwise your ACO tree hierarchy will get toasted!

My advice would be to SQL dump your database/ACO table before playing with this:

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# Migration after callback

# Inserts a node for the Dashboard controller and then a single admin_index child action. 

public function after($direction) {

  $aco = $this->generateModel('Aco');

  // Be sure to attach this. Otherwise it's bye-bye tree hierarchy!!

  $aco->Behaviors->attach('Tree');

  if( $direction == 'up' ){

    // Insert ACO node for dashboard controller.

    $data['Aco']['parent_id'] = 1;

    $data['Aco']['alias'] = 'Dashboard';

    $aco->save($data);

    // Insert ACO node for dashboard admin_index action.

    $data['Aco']['parent_id'] = $aco->id;

    $data['Aco']['alias'] = 'admin_index';

    $aco->create();

    $aco->save($data);

  } elseif( $direction == 'down' ) {

    $dashboard = $aco->findByAlias('Dashboard');

    // Remove ACO nodes.

    if( !empty($dashboard) ){

      $aco->deleteAll(array('Aco.parent_id' => $dashboard['Aco']['id']));

      $aco->delete($dashboard['Aco']['id']);

    }

  }

  return true;

}

Coupling this with a create_table in the up stage of the migration will mean plugin installations should be a 2 stage process.

1) Import plugin using Piston/SVN external.
2) Run the install migration creating table(s) and registering permit-table actions (ACO nodes).

CakePHP HABTM find with conditions and containable behavior

admin — Tue, 14 Sep 2010 15:00:20 +0000

If you’re using the CakePHP Containable behavio(u)r and trying to query with conditions across a Has and Belongs To Many association, you need to specify you wish to contain the dynamically bound model records, before you do the actual find.

Here’s one example from the book that doesn’t work with Containable:

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$this->Recipe->bindModel(array('hasOne' => array('RecipesTag')));

$this->Recipe->find('all', array(

    'fields' => array('Recipe.*'),

    'conditions'=>array('RecipesTag.tag_id'=>124) // id of Dessert

));

With Containable you need to specify that you want to include the dynamically bound join table (RecipesTag) records, otherwise the search will not work:

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$this->Recipe->bindModel(array('hasOne' => array('RecipesTag')));

// Here we specify we want the RecipesTag records.

$this->Recipe->contain(array(

  'RecipesTag'

));

$this->Recipe->find('all', array(

  'fields' => array('Recipe.*'),

  'conditions'=>array('RecipesTag.tag_id'=>124) // id of Dessert

));

File uploads to PHP scripts hang in Safari bug

admin — Tue, 15 Jun 2010 17:37:31 +0000

I was experiencing this issue with some larger file uploads using the CakePHP Media plugin.

https://bugs.webkit.org/show_bug.cgi?id=5760

I added this to the virtual host declaration in my Apache config file to fix it:

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<VirtualHost x.x.x.x:x>

    # Prevent Safari from hanging on uploads

    BrowserMatch  Safari  nokeepalive

VirtualHost>

Call to undefined method Folder::ls() on line 277 – CakePHP 1.3 with Media plugin

admin — Sat, 17 Apr 2010 12:52:29 +0000

If you’re trying to use the CakePHP Media plugin with 1.3 (I’m running RC3) and you get this error when deleting an attachment:

1	Call to undefined method Folder::ls() in /path_to_app/app/plugins/media/models/behaviors/media.php on line 277

ls() has been deprecated in favour of read(), change line 277 of /path_to_app/app/plugins/media/models/behaviors/media.php to:

1	list($versions, ) = $Folder->read();

All should work fine thereafter ;]

CakePHP v1.2 helper naming convention

admin — Fri, 26 Feb 2010 16:34:46 +0000

To create a helper which name consists of more than one word use the following naming convention:

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# Helper name: MyHelper

# File name

app/views/helpers/my_helper.php

# Class name (Camel Case)

class MyHelper extends AppHelper 

# In Controller (Camel Case)

var $helpers = array('MyHelper');

# In View (Camel Back):

$myHelper->method();