• Define mod_mail() (implementing hook_mail() ), this function will prepare the email
• Send the email using drupal_mail()

Define mod_mail()

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/**
 * Implementation of hook_mail.
 */
function mod_mail($key, &$message, $params) {
  switch ($key) {
    case 'basic':
      $message['subject'] = t('Greetings');
      $message['body'] = array(t('I just wanted to say hello!'));
      break;
    case 'advanced':
      $message['subject'] = t('Hello @username', array('@username' => $params['username']));
      $message['body'] = array(t('Thank you for joining @site_name!', array('@site_name' => $params['site_name'])));
      break;
    default:
      ; /* Do nothing */
  }
}

Sending the email

In order to send the email you need to decide on 2 parameters (optionally, a 3rd):

1. The recipent (email address)
2. The key, in this example this would be ‘basic’ or ‘advanced’
3. The $params to pass to mod_mail(), in our example it’s only needed if we are using the key ‘advanced’

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// Basic example ($key = 'basic')
$email = "someone@example.com";
drupal_mail('mod', 'basic', $email, language_default());
 
 
// Advanced example ($key = 'advanced')
$email = "someone@example.com";
$params = array(
  'username' = 'Someone',
  'site_name' = variable_get('site_name'),
);
drupal_mail('mod', 'advanced', $email, language_default(), $params);

c.widget is not a function

Or:

d.widget is not a function

I get this error when I do theming or module development for Drupal. Basically this tells you that the file jquery.ui.widget.js is missing. check the code you were writting and add that file to Drupal like this:

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drupal_add_js('misc/ui/jquery.ui.widget.min.js');

imame@meta:~$ ccsm

If you are using Unity open Desktop > Ubuntu Unity Plugin but if you are using Gnome shell choose General > Gnome Compatibily – anyways, choose whichever is already checked, one the next window check that the shortcuts are enabled and configured correctly

Compiz > Unity

Compiz > Gnome Compatibility

Contents

• Install necessary packages
• Log in using Gnome Classical
• Tweak with Gnome Tweak Tool
• Where is “Add to panel” and others?

Install necessary packages

In order to have Gnome classical appearance on Ubuntu 11.10 you need to install gnome-shell and gnome-panel, a following reboot -from my experience – is preferable.

imame@meta:~$ sudo apt-get install gnome-shell gnome-panel
imame@meta:~$ # blabla while packages are being installed
imame@meta:~$ sudo reboot

Log in using Gnome Classical

Before opening your session, clear the gear next to your name and choose Gnome Classical.

Tweak with Gnome Tweak Tool

You can personalize you desktop with the Gnome Tweak Tool:

imame@meta:~$ sudo apt-get install gnome-tweak-tool

The launcher is located here: Applications > Others > Advanced Settings

Where is “Add to panel” and others?

Now in order to have the penel related options a simple right click won’t work, you need to Alt+ right click

Thanks for reading!

Requirements

Before starting I want you to meet the following requirements in order to follow this tutorial:

• Install and enable the Computed_field module
• Install and enable the Date module (Date API, Date & Date popup)
• Install and enable the Rules module
• Enable the core PHP filter module
• Add a date field to an existing content type (let’s call it field_dob)

For the purpose of this tutorial I created a very simple content type named Candidate with only 2 fields:

• I changed the title from Title to Full name and removed the Body field
• I added a Date field and named it field_dob
  

  Date of birth field - Click to enlarge

Add a computed field

Now let’s add a new field with Age as a label and field_age as a name and Computed as a field type.
In the next screen we will set the field settings:

• Computed Code (PHP):

  $entity_field[0]['value'] = ( time() - strtotime($entity->field_dob[LANGUAGE_NONE][0]['value']) ) / 86400 / 365.25;

• Display Code (PHP):

  $display_output = floor($entity_field_item['value']);

• Data type: Decimal
• Decimal Scale (decimal): 3

Add content and test

Now let’s add a few items and see if it works as we expected, I added a couple of entries and tested:

• Old KADIMI (born on 1 Jan 1990) => Age computed 21
• Young KADIMI (born on 2 Jan 1990) => Age computed 21

Sorting with Views

You may want to use the Views module to accommodate the output to your needs, one of the features of the Views module is that it enable you to sort results.

So what if we wanted to sort our candidates by age, Both KADIMI brothers (Old and Young) are 21 years old but Old is 1 day older that Young, for Drupal they have the same age and the result of the sorting may be inaccurate, actually we already fixed this issue by storing the age as a decimal number with 3 decimal points and displaying it as an integer (by using floor), by looking into the database table field_data_field_age with phpMyAdmin:

• Young KADIMI is 21.570 years old
• Old KADIMI is 21.573 yeas old

Update age

In order to recompute a candidate age we must re-save that candidate node, one way to do this is using Rules and Drupal cron

• Visit /admin/config/workflow/rules/reaction/add to add a rule, give it a descriptive name like “Re-save candidates nodes”
  Set React on event to: Cron maintenance tasks are performed
• Add a new action
  Set Select the action to add to: Execute custom PHP code
  Set the PHP code to:

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  $old = '1 day'; # Content is considered outdated if older than {$old} $type = 'candidate'; # Apply to nodes of type {$type} $count = 20; # Update {$count} nodes per cron $old = strtotime("now - $old");   $nids = db_query_range(' SELECT n.nid FROM {node} n WHERE n.type = :type AND n.created < :old ORDER BY n.created ASC', 0, $count, array(':old' => $old, ":type"=>$type) );   foreach ($nids as $nid){ $node = node_load($nid); node_save($node); }

  Tweak the 3 parameters in a way that suits your needs and that’s it!

Need help?

If  you found this tutorial difficult and couldn’t follow the instructions you can ask for help on the comments section or you can hire me and I will take care of this for you.

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