[development] [developement] Understanding the hook system

Nathan Digriz nathandigriz at gmail.com
Thu Mar 23 09:48:31 UTC 2006

Another question I have is why does node_invoke exist if module_invoke_all
does the same work? Does using node_invoke override the normal order of
things? Do hooks that are created with a node_invoke go before or after the
hooks created with module_invoke_all within the same module?

In other words what is the purpose of node_hook ? Can I use it to set a hook
private to a module so that other than the ones I set?

An example would be could I set up and use node_invoke in a paypal module to
create hooks so that only paypal framework module can see them?

On 3/22/06, Nathan Digriz <nathandigriz at gmail.com> wrote:
> I am not sure if this is development or document but I am trying to get my
> head around hooks
> http://drupal.org/node/55243
> There does not seem to be any explaination of the differences and when to
> use
> system hooks
> module hooks
> node hooks
> Some type of example or chart would be appreciated also.
> Thanks
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