[support] inter module communication, hooks and dependencies

[Shai Gluskin]

Hi Ivan,

I just looked over your post really quickly. But that quick glance makes me
think you are need of one or both of the following modules in addition to
nodewords:

http://drupal.org/project/nodewords_bypath
http://drupal.org/project/nodewords_nodetype

best,

Shai
content2zero <http://content2zero.com>

On Fri, Jan 2, 2009 at 9:17 AM, Ivan Sergio Borgonovo
<mail at webthatworks.it>wrote:

> Hi,
>
> The actual problem is providing an API to let modules add META in a
> more structured way so that eg. the same META is not sent 2 times or
> module can decide to concatenate further meta or define a
> "owerwriteability" level.
>
> I gave a look to nodewords aka Meta tags but I have stuff that
> aren't nodes (they aren't views or taxonomies either) that don't fit
> with the node paradigm too well.
>
> nodewords provide a hook to 'prepare' META but it is on a module
> base.
> Nodewords needs to be aware of all the content types (or just pages,
> menu_hook etc...) it can support (*unless I'm missing something...*)
> but actually what know better which are the most suitable meta for a
> "content" should be the content producer (be it a "node" or just a
> MENU_CALLBACK).
> Other modules like nodewords_bypath and _nodetype do some extrawork
> to know what actually called the hook.
> But I'd find myself more comfortable with a different approach:
> - there is a common API that let me manage META
> - modules that want to add META use it
> - when everything is ready drupal_set_html_head get called
>
> The problem is:
> - the API functions should be ready when other modules call them
> - drupal_set_html_head($meta) should be called last
>
> If the weight of my meta module is high, other modules won't find
> the functions.
> If the weight of my module is low and I put
> drupal_set_html_head($meta) in the menu hook, drupal_set_html_head
> will be called before $meta had the chance to be filled by other
> modules.
>
> I'd say this is a general common problem but I didn't find any
> "drupalish" way to solve it.
>
> The easiest (and somehow elegant) way I thought to deal with this
> problem was to build up 2 modules with different weight):
> - meta_prepare (that will offer the functions)
> - meta_deliver (that will simply call drupal_set_html_head)
>
> Is there a more drupalish way to deal with dependency and "order of
> execution" in drupal?
>
> thanks
>
> --
> Ivan Sergio Borgonovo
> http://www.webthatworks.it
>
> --
> [ Drupal support list | http://lists.drupal.org/ ]
>
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