CODEWITHSUNDEEP
drupalhook
enjoylife
enjoylife

Reputation: 5479

how the output of the drupal hooks

the drupal is 6. 1, in drupal.everything's output is by a theme function or a template file.is this right. if right,then question 2.

2,in a module there is a hook_link and hook_menu, how they output? i can't find a theme function or a template file effect it. thank you.

eg:in book's module there is a book_link（） defined. but i can't find there is a heme_book_link()，and in hook_theme there is no return of the book_link.

Upvotes: 0

Views: 227

Answers (2)

mirzu
mirzu

Reputation: 1831

3 things that make understanding Drupal hooks:

  1. They are just regular php functions.
  2. Many times they don't return anything.
  3. They are "called" by module_invoke_all() or module_invoke()

For Example: If module foo has a hook_dosomething() there is a function in foo.module that implements module_invoke_all('foo', 'dosomething')

The other way to think about it is that the hook "exteneds" a function someplace else, and anything that happens in the hook happens in the function that calls module_invoke_all() in it.

Upvotes: 1

Vinicius Braz Pinto
Vinicius Braz Pinto

Reputation: 8289

Not all hooks generate output. hook_menu() and hook_link(), for example, just return arrays with data that will be used by Drupal in some way (e.g. to register new paths in the system).

Upvotes: 1

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