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I know that in drupal 6 exist: theme_menu_item, but in drupal 7 there is not. Is there any replacements so that I modify the output for main system menu ?
Actually I want to do a kind of filter of the menu items depending some criteria, which I will set in the function.
Looking at the function that called the theme function theme_menu_item() (menu_tree_output()), and comparing it with the Drupal 7 version of the same function, I can say that the equivalent of theme_menu_item() is theme_menu_link().
function mytheme_menu_link(array $variables) in template.php file from my theme, but it has no effect to menu. I have checked with debugger and the function is not processed by drupal, just as he doesn't recognize this hook...
theme_menu_link() is not a hook, but a theme function. Theme implementation needs to be registered using hook_theme(), as reported in Default theme implementations.
hook_theme(). By convention, default implementations of theme hooks are named theme_HOOK. Default template implementations are stored in the module directory."
The theme_menu_item() function has been replaced by theme_menu_link(). For details on this change, and all other changes made to the theme layer between Drupal 6 and 7, see the Converting 6.x themes to 7.x page. There is also a corresponding module conversion page.
