[development] uninstall: deleting all variables of a module

[Larry Garfield]

On Saturday 18 April 2009 9:27:09 am Stefan Borchert wrote:
> Eric Schaefer schrieb:
> > 2009/4/18 Earnie Boyd <earnie at users.sourceforge.net>:
> >> db_query(DELETE FROM {variable} WHERE name LIKE '%s_%%', 'scheduler');
> >
> > I guess thats your way of saying "No nice and easy way" (as in "Drupal
> > has save and portable built-in functions for it"). ;-)
>
> http://api.drupal.org/api/function/variable_del/6
>
> <code>
> <?php
> function remove_all_variables($namespace) {
>    foreach ($conf as $name => $value)
>    {
>      if (strpos($name, $namespace) === 0) {
>        // Variable starts with given namespace. Delete it.
>        variable_del($name);
>      }
>    }
> }
> ?>
> </code>
>
> Nice enough? ;-)
>
> hth,
>
>   Stefan

I can do you one better. :-)

First, some node types may be deleted along the way before your module is 
disabled.  For that, use this hook:

http://api.drupal.org/api/function/hook_node_type/6

For the uninstall hook, you can use node_get_types() to get a list of 
currently extant node types and iterate on that:

http://api.drupal.org/api/function/node_get_types/6

And then use variable_del() like Stefan says.

-- 
Larry Garfield
larry at garfieldtech.com