What to do if a time comes and you need some fancy stuff done to tree items that django-sitetree does not support?
It might be that you need some special tree items ordering in a menu, or you want to render in a huge site tree with all articles titles that are described by one tree item in Django admin, or god knowns what else.
django-sitetree can facilitate on that as it comes with register_items_hook(callable) function which registers a hook callable to process tree items right before they are passed to templates.
Note that callable should be able to:
- handle tree_items and tree_sender key params.
tree_items will contain a list of extended TreeItem objects ready to pass to template.
tree_sender will contain navigation type identifier (e.g.: menu, sitetree, breadcrumbs, menu.children, sitetree.children)
return a list of extended TreeItems objects to pass to template.
# First import the register function. from sitetree.sitetreeapp import register_items_hook # The following function will be used as items processor. def my_items_processor(tree_items, tree_sender): # Suppose we want to process only menu child items. if tree_sender == 'menu.children': # Lets add 'Hooked: ' to resolved titles of every item. for item in tree_items: item.title_resolved = 'Hooked: %s' % item.title_resolved # Return items list mutated or not. return tree_items # And we register items processor. register_items_hook(my_items_processor)
You might also be interested in the notes on Overriding SiteTree Admin representation.