On Dec 11, 3:10 pm, ahmed fakher <spcial...@gmail.com> wrote:
> i user tree behavior,,but i build it like this table >> all parent
> must be null field not the top parent only..i know that is wrong
why is that wrong?
> but i
> need it to build menus...
You do not need the tree behavior for something related to menus -
there simply isn't enough data to warrant the overhead/complexity IMO.
> i use helper for that..but the problem i need
> if the user click on Entertainment (parent) see all articles in
> music(child) and movies(child),,so i check if Entertainment is null
> find his children
>
> |-------------|----------------- --------------|----------|-
> | Id | Parent_id | lft | rght | name
> | -------------------------------|------------|----------
> |-------
> | 89 | NULL | 25 | 30 | Entertainment
> | | | | |
> | 90 | 89 | 26 | 27 | Music
> | | | | |
> | 91 | 89 | 28 | 29 | Movies
Ic so the menu is a representation of a 'justified' use of the tree
behavior.
why does it matter if the parent_id is null - I would not bother even
checking if parent id is null. What I think you're really saying is
"when a category has sub categories"
Do something like this:
$categories = array($requestedId);
$children = $this->Category->findChildren($requestedId, false,
array('id'))
foreach($children as $child) {
$categories[] = $child['Category']['id'];
}
$stuff = $this->Article->find('all', array(
'conditions' => array('category_id' => $categories
));
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