[development] Hook ordering

[Fernando Silva]

After the suggestion of "module" ordering for hook certain, I thought
a bit and conclude that the problem is that we have some "events"
missing.

Let's make a resume:
* hook_load() is called for the specific module that implements that
node type (only after 4.7 it was implemented a nice way to have
multiple node types inside a unique module)
* hook_nodeapi('load') is called *after* a node is loaded (are you
seeing the problem?)

We need more events, and with correct names for nodeapi:
* load - called only for the modules that implement the specific node
types. If "example.module" implements a node "xpto" that, then
nodeapi('load') will only be called for this module, because it knows
that is "example.module" that has "xpto" node type
* after load - called for every other module, after the 'load' was
done and allowing the altering and adjustment of the already loaded
fields
* insert
* after insert
* update
* after update
* delete
* after delete

Are you seeing what we can do here? Funny, we can add a "before
*event*" allowing us to do things before anything is done.

What do you think?

On 1/3/07, Karoly Negyesi <karoly at negyesi.net> wrote:
> Hi,
>
> Reading the hook_nodeapi thread...
>
> In Drupal 6 I would like to see a hook registry -- mostly autodiscovered,
> but if you want ordering, then you can say "my implementation of
> hook_nodeapi is to be run before module this,that,foor,bar". Available in
> my sandbox, weight.php . It's trivial to extend this capatibility to
> packages as well, so that if you ask to be run before !views then you will
> run before all modules that belong to the views package.
>
> All nice and dandy. But, the next step would be to request for "I want to
> be the first for hook_foo". What am I to do if two module asks for this?
> Die a horrible death? Disable the offending modules? This code, quite
> obviously will run on the modules page.
>
> Regards
>
> NK
>
> Ps. Extending hook registry to hook#op is also in the plans.
>