PEAR install quick howto on Debian Lenny: Image_Graph

Tested on Debian Lenny.

Time elapsed before a working script < 10 minutes

Install PEAR installer:

# apt-get install php-pear

First, type:

pear -h

to get help.

On root shell type:

# pear install --alldeps Image_Graph

Install failed with error:

Failed to download pear/Image_Graph within preferred state “stable”, latest release is version 0.7.2, stability “alpha”, use “channel://pear.php.net/Image_Graph-0.7.2″ to install

Retype as:

# pear install --alldeps Image_Graph-0.7.2

Repeat for other alpha dependencies the same procedure, eg:

pear install --alldeps Numbers_Words-0.15.0

At last, you got:

Nothing to install

Now, you can find all installed packages on /usr/share/php.

ImageGraph is installed on /usr/share/php/Image/Graph.php.

You have to include it on your PHPs.

You can follow the Ian’s howto on:

http://www.phpbuilder.com/columns/ian_gilfillan20060503.php3

To start using PEAR Image_Graph.

Here the result using Ian’s code on my Linux box:

Image_Graph test, using Ian code

Additional info:

Hosting providers (eg. HostMonster) sometimes furnish simplified PEAR installation via CPanel. So, you can use local PEAR installation for developement, and online installation for production use.

Remember:

• To check differences between local and production versions
• To change include path! (say no to white screen!)

See also:

• Image_Graph PEAR Documentation

Customize exposed filter on Drupal View

Tested on:

• Drupal 5.x
• Views 1.6

When you have to filter a view by a content type, you have to use Exposed filters. Since default list is somewhat ugly (a select with some elements and CTRL to be pressed) we transform it in simple checkboxes.

Copy and paste this code into your template.php:

# I use imagecache because on my site is active
# and doesn't use hook_form_alter
/** Display checkboxes instead select for exposed views filters */
function imagecache_form_alter($form_id, &$form) {
  if($form_id == 'views_filters' && arg(0) == 'change_to_your_view_path_before_slash') {
    if(!empty($form)) {
      foreach ($form as $id => $field) {
        if ($form[$id]['#type'] == 'select' && $form[$id]['#multiple'] == 'multiple') {
          # from select to checkboxes
          $form[$id]['#type'] = 'checkboxes';
	  foreach($form[$id]['#options'] as $key=>&$content) {
            # hide from list all content types that aren't mycontenttype or mycontenttype2
            if($key!='mycontenttype' && $key!='mycontenttype2'){
		unset($form[$id]['#options'][$key]);
	    }
	  }
        }
      }
    }
  }
}

To hide operators dropdown, you have to check “lock operators” on views page.

See also:

• http://drupal.org/node/158607

Set views title dynamically for blocks and pages

Tested on: Drupal 5.x – Views 1.6

Problem: you want to display a taxonomy term name as view title, for block and themes.

Solution: On views edit screen, just add to your Argument > Argument handling code:

$args[0] = 3;

Where 3 is the Term ID you want to display as name. When term name will be updated, view title will be updated too.

You haven’t to add other arguments via GUI, just this code.