Ahh, yes a module can declare theme hooks so that other things can theme the output of the module. It's perfectly safe to use these module-specific theme hooks in your theme because of the way the drupal hook system works. As far as the PHP parser is concerned, you're just declaring a new function. If the module that uses that theme hook is present, it'll call that function to theme its output. If the module that uses that theme hook isn't there, the function will never be called.

David Landry

On Fri, Sep 2, 2011 at 10:06 PM, Warren Vail <warren@vailtech.net> wrote:

Sorry I miss spoke (or typed).

 

There is mention in many of the Drupal programming books of theming functions that can be invoked by a module.  I don’t understand them fully yet, but I believe some of them are standard and others may not be.  I believe the idea is to make sure the theming is kept separate from the data, even if some of the theming is data dependent (something that proponents of separation tend discount), a compromise at best.

 

Warren Vail

From: themes-bounces@drupal.org [mailto:themes-bounces@drupal.org] On Behalf Of David Landry
Sent: Thursday, September 01, 2011 5:03 PM


To: A list for theme developers
Subject: Re: [themes] theme dependencies

 

Warren,

 

I'm not sure I understand what you mean by "theming modules." The first thing that comes to mind is something like HTML5 Tools. The HTML5 Base theme is "designed to go with HTML5 Tools," but HTML5 Tools does its magic before anything reaches the theme layer, leaving no reason for the theme to call any HTML5 Tools functions.

 

David Landry

 

On Thu, Sep 1, 2011 at 4:38 PM, Warren Vail <warren@vailtech.net> wrote:

David,

 

Doesn’t the opposite exist where modules request specific theming modules?  Is there a standard set of theming modules yet, or must you just test to see if the function exists?

 

Warren Vail

 

From: themes-bounces@drupal.org [mailto:themes-bounces@drupal.org] On Behalf Of David Landry
Sent: Thursday, September 01, 2011 2:17 PM
To: A list for theme developers
Subject: Re: [themes] theme dependencies

 

It's bad practice for themes to have module dependencies like that. There is no centralized standard for tracking modules that a theme depends on. You'll have to go through the entire theme looking for references to modules.

 

If you want to be kind to the next person who has to maintain the site, you could break out any template code that has module dependency as a custom module or Feature, so that the module dependencies can be declared.

 

David Landry

On Thu, Sep 1, 2011 at 3:09 PM, Bert Van Kets <mailing@vankets.com> wrote:

Hi all,

is there any easy way to know what modules a theme is depending on?
I have a theme from a Drupal 6 site with a multitude of installed
modules. When I use the theme on a plain vanilla Drupal install a blank
page is installed.
I really do not want to go through all the tpl files to see what modules
are referenced. How is a problem like this tackled?

Thanks.

Bert
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